MAX3243IDBRG4_技术文档

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SLLS350L − APRIL 1999 − REVISED MARCH 2004

DB, DW, OR PW PACKAGE

(TOP VIEW)

D

Single-Chip and Single-Supply Interface for

IBM PC/AT Serial Port

D

RS-232 Bus-Pin ESD Protection Exceeds

15 kV Using Human-Body Model (HBM)

C2+

C2−

1

28 C1+

27 V+

2

Meets or Exceeds the Requirements of

TIA/EIA-232-F and ITU v.28 Standards

3

26

25

24

23

22

21

20

19

18

17

16

15

V−

V

CC

4

RIN1

RIN2

RIN3

RIN4

RIN5

DOUT1

DOUT2

DOUT3

DIN3

DIN2

DIN1

GND

Operates With 3-V to 5.5-V V

Supply

5

C1−

CC

6

FORCEON

FORCEOFF

INVALID

ROUT2B

ROUT1

ROUT2

ROUT3

ROUT4

ROUT5

Three Drivers and Five Receivers

Operates Up To 250 kbit/s

7

8

Designed to Transmit at a Data Rate of

250 kbit/s

9

10

11

12

13

14

Low Standby Current . . . 1 µA Typical

External Capacitors . . . 4 × 0.1 µF

Accepts 5-V Logic Input With 3.3-V Supply

Always-Active Noninverting Receiver

Output (ROUT2B)

D

Alternative High-Speed Pin-Compatible

Device (1 Mbit/s)

− SNx5C3243

D

Serial-Mouse Driveability

Auto-Powerdown Feature to Disable Driver

Outputs When No Valid RS-232 Signal Is

Sensed

D

Applications

− Battery-Powered Systems, PDAs,

Notebooks, Laptops, Palmtop PCs, and

Hand-Held Equipment

description/ordering information

The MAX3243consists of three line drivers, five line receivers, and a dual charge-pump circuit with 15-kV ESD

(HBM) protection pin to pin (serial-port connection pins, including GND). The device meets the requirements

of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and

the serial-port connector. This combination of drivers and receivers matches that needed for the typical serial

port used in an IBM PC/AT, or compatible. The charge pump and four small external capacitors allow operation

from a single 3-V to 5.5-V supply. In addition, the device includes an always-active noninverting output

(ROUT2B), which allows applications using the ring indicator to transmit data while the device is powered down.

The device operates at data signaling rates up to 250 kbit/s and a maximum of 30-V/µs driver output slew rate.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

AT, IBM, and PC are trademarks of International Business Machines Corporation.

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Copyright  2004, Texas Instruments Incorporated

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ꢦ ꢪ ꢧ ꢦꢟ ꢠꢳ ꢢꢡ ꢥ ꢭꢭ ꢫꢥ ꢣ ꢥ ꢤ ꢪ ꢦ ꢪ ꢣ ꢧ ꢋ

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1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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SLLS350L − APRIL 1999 − REVISED MARCH 2004

description/ordering information (continued)

Flexible control options for power management are available when the serial port is inactive. The

auto-powerdown feature functions when FORCEON is low and FORCEOFF is high. During this mode of

operation, if the device does not sense a valid RS-232 signal, the driver outputs are disabled. If FORCEOFF

is set low, both drivers and receivers (except ROUT2B) are shut off, and the supply current is reduced to 1 µA.

Disconnecting the serial port or turning off the peripheral drivers causes the auto-powerdown condition to occur.

Auto-powerdown can be disabled when FORCEON and FORCEOFF are high and should be done when driving

a serial mouse. With auto-powerdown enabled, the device is activated automatically when a valid signal is

applied to any receiver input. The INVALID output is used to notify the user if an RS-232 signal is present at any

receiver input. INVALID is high (valid data) if any receiver input voltage is greater than 2.7 V or less than −2.7 V

or has been between −0.3 V and 0.3 V for less than 30 µs. INVALID is low (invalid data) if all receiver input

voltages are between −0.3 V and 0.3 V for more than 30 µs. Refer to Figure 5 for receiver input levels.

ORDERING INFORMATION

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

†

T

A

PACKAGE

Tube of 20

Reel of 1000

Tube of 50

Reel of 2000

Tube of 50

Reel of 2000

Tube of 20

Reel of 1000

Tube of 50

Reel of 2000

Tube of 50

Reel of 2000

MAX3243CDW

MAX3243CDWR

MAX3243CDB

MAX3243CDBR

MAX3243CPW

MAX3243CPWR

MAX3243IDW

MAX3243IDWR

MAX3243IDB

SOIC (DW)

SSOP (DB)

TSSOP (PW)

SOIC (DW)

SSOP (DB)

TSSOP (PW)

MAX3243C

MA3243C

MAX3243I

MB3243I

0°C to 70°C

−40°C to 85°C

MAX3243IDBR

MAX3243IPW

MAX3243IPWR

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

Function Tables

EACH DRIVER

INPUTS

OUTPUT

DOUT

VALID RIN

RS-232 LEVEL

DRIVER STATUS

DIN

FORCEON

FORCEOFF

X

L

X

H

L

X

Z

H

L

Powered off

H

Normal operation with

auto-powerdown disabled

H

L

X

Yes

No

H

L

Normal operation with

auto-powerdown enabled

H

L

Z

Powered off by

auto-powerdown feature

H

L

H = high level, L = low level, X = irrelevant, Z = high impedance

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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ꢞ

SLLS350L − APRIL 1999 − REVISED MARCH 2004

EACH RECEIVER

INPUTS

OUTPUTS

ROUT2B ROUT

RIN1,

RIN3−RIN5

VALID RIN

RS-232 LEVEL

RECEIVER STATUS

RIN2

FORCEOFF

L

H

X

L

X

L

H

L

Z

H

L

Powered off while

ROUT2B is active

X

L

H

Yes

No

L

H

L

Normal operation with

auto-powerdown

disabled/enabled

H

L

H

L

H

L

H

Open

H

H = high level, L = low level, X = irrelevant, Z = high impedance (off), Open = input disconnected or connected

driver off

logic diagram (positive logic)

14

13

12

9

10

11

DIN1

DOUT1

DOUT2

DOUT3

DIN2

DIN3

22

23

FORCEOFF

FORCEON

21

Auto-powerdown

INVALID

19

20

4

ROUT1

RIN1

RIN2

5 k

Ω

ROUT2B

18

17

16

15

5

ROUT2

5 k

Ω

6

ROUT3

ROUT4

ROUT5

RIN3

RIN4

RIN5

5 k

Ω

7

5 k

Ω

8

5 k

Ω

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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SLLS350L − APRIL 1999 − REVISED MARCH 2004

†

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, V

(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 6 V

CC

Positive output supply voltage range, V+ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 7 V

Negative output supply voltage range, V− (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to −7 V

Supply voltage difference, V+ − V− (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 V

Input voltage range, V : Driver (FORCEOFF, FORCEON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 6 V

I

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25 V to 25 V

Output voltage range, V : Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −13.2 V to 13.2 V

O

Receiver (INVALID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to V

+ 0.3 V

CC

Package thermal impedance, θ (see Notes 2 and 3): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . 62°C/W

JA

DW package . . . . . . . . . . . . . . . . . . . . . . . . . . 46°C/W

PW package . . . . . . . . . . . . . . . . . . . . . . . . . . 62°C/W

Operating virtual junction temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C

J

Storage temperature range, T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C

stg

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. All voltages are with respect to network GND.

2. Maximum power dissipation is a function of T (max), θ , and T . The maximum allowable power dissipation at any allowable

J

JA

A

ambient temperature is P = (T (max) − T )/θ . Operating at the absolute maximum T of 150°C can affect reliability.

D

J

A

JA

J

3. The package thermal impedance is calculated in accordance with JESD 51-7.

recommended operating conditions (see Note 4 and Figure 6)

MIN NOM

MAX

3.6

UNIT

V

= 3.3 V

= 5 V

3

4.5

2

3.3

5

CC

Supply voltage

V

5.5

= 3.3 V

= 5 V

V

IH

Driver and control high-level input voltage

V

DIN, FORCEOFF, FORCEON

2.4

V

Driver and control low-level input voltage

Driver and control input voltage

Receiver input voltage

DIN, FORCEOFF, FORCEON

0.8

5.5

25

70

85

V

IL

0

−25

0

I

MAX3243C

MAX3243I

T

A

Operating free-air temperature

°C

−40

NOTE 4: Test conditions are C1−C4 = 0.1 µF at V

CC

= 3.3 V 0.3 V; C1 = 0.047 µF, C2−C4 = 0.33 µF at V = 5 V 0.5 V.

CC

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Note 4 and Figure 6)

‡

PARAMETER

TEST CONDITIONS

MIN TYP

MAX

UNIT

Input leakage

current

FORCEOFF,

FORCEON

I

0.01

1

µA

No load,

FORCEOFF and

FORCEON at V

Auto-powerdown

disabled

0.3

1

mA

CC

Powered off

V

T

A

= 3.3 V or 5 V, No load, FORCEOFF at GND

10

CC

= 25°C

I

Supply current

CC

No load, FORCEOFF at V

FORCEON at GND,

,

CC

µA

Auto-powerdown

enabled

1

10

All RIN are open or grounded,

All DIN are grounded

‡

All typical values are at V

= 3.3 V or V = 5 V, and T = 25°C.

CC A

CC

NOTE 4: Test conditions are C1−C4 = 0.1 µF at V

= 3.3 V 0.3 V; C1 = 0.047 µF, C2−C4 = 0.33 µF at V

= 5 V 0.5 V.

CC

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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ꢞ

SLLS350L − APRIL 1999 − REVISED MARCH 2004

DRIVER SECTION

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Note 4 and Figure 6)

†

PARAMETER

TEST CONDITIONS

All DOUT at R = 3 kΩ to GND

MIN TYP

MAX

UNIT

V

High-level output voltage

Low-level output voltage

5

5.4

OH

L

All DOUT at R = 3 kΩ to GND

−5

−5.4

V

OL

L

Output voltage

(mouse driveability)

DIN1 = DIN2 = GND, DIN3 = V , 3-kΩ to GND at DOUT3,

DOUT1 = DOUT2 = 2.5 mA

CC

V

O

5

V

I

High-level input current

Low-level input current

V = V

CC

0.01

1

µA

IH

I

V at GND

I

IL

V

= 3.6 V,

V

O

V

O

V

O

V

O

V

O

= 0 V

CC

‡

I

35

60

mA

Short-circuit output current

OS

= 5.5 V,

r

Output resistance

, V+, and V− = 0 V,

=

2 V

300

10M

Ω

o

12 V,

10 V,

V

= 3 V to 3.6 V

25

CC

I

off

Output leakage current

FORCEOFF = GND

µA

= 4.5 V to 5.5 V

CC

†

‡

All typical values are at V

= 3.3 V or V = 5 V, and T = 25°C.

CC A

CC

Short-circuit durations should be controlled to prevent exceeding the device absolute power dissipation ratings, and not more than one output

should be shorted at a time.

NOTE 4: Test conditions are C1−C4 = 0.1 µF at V

CC

= 3.3 V 0.3 V; C1 = 0.047 µF, C2−C4 = 0.33 µF at V = 5 V 0.5 V.

CC

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Note 4 and Figure 6)

†

PARAMETER

TEST CONDITIONS

MIN TYP

MAX

UNIT

C

= 1000 pF,

R

L

= 3 kΩ,

See Figure 1

L

Maximum data rate

150

250

100

kbit/s

One DOUT switching,

R

= 3 kΩ to 7 kΩ,

L

§

t

Pulse skew

C

= 150 pF to 2500 pF

ns

sk(p)

L

See Figure 2

C

= 150 pF to 1000 pF

6

4

30

Slew rate, transition region

(see Figure 1)

V

R

= 3.3 V,

= 3 kΩ to 7 kΩ

L

CC

L

SR(tr)

V/µs

= 150 pF to 2500 pF

†

§

All typical values are at V

Pulse skew is defined as |t

= 3.3 V or V = 5 V, and T = 25°C.

CC A

CC

− t

| of each channel of the same device.

PLH PHL

= 3.3 V 0.3 V; C1 = 0.047 µF, C2−C4 = 0.33 µF at V

NOTE 4: Test conditions are C1−C4 = 0.1 µF at V

CC

= 5 V 0.5 V.

CC

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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ꢑ

SLLS350L − APRIL 1999 − REVISED MARCH 2004

RECEIVER SECTION

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Note 4 and Figure 6)

†

PARAMETER

High-level output voltage

Low-level output voltage

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V

I

= −1 mA

= 1.6 mA

V

−0.6 V

V −0.1 V

CC

OH

CC

0.4

2.4

V

OL

V

= 3.3 V

= 5 V

1.6

1.9

1.1

1.4

0.5

0.05

5

CC

V

IT+

Positive-going input threshold voltage

Negative-going input threshold voltage

V

= 3.3 V

= 5 V

0.6

0.8

V

IT−

Input hysteresis (V

IT+

− V

)

V

hys

IT−

I

off

Output leakage current (except ROUT2B)

Input resistance

FORCEOFF = 0 V

V = 3 V to 25 V

10

7

µA

kΩ

r

3

i

I

†

All typical values are at V

CC

= 3.3 V or V = 5 V, and T = 25°C.

CC A

NOTE 4: Test conditions are C1−C4 = 0.1 µF at V

= 3.3 V 0.3 V; C1 = 0.047 µF, C2−C4 = 0.33 µF at V = 5 V 0.5 V.

CC

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Note 4)

†

PARAMETER

TEST CONDITIONS

MIN TYP

MAX

UNIT

ns

t

Propagation delay time, low- to high-level output

Propagation delay time, high- to low-level output

Output enable time

150

200

50

PLH

PHL

en

C

= 150 pF, See Figure 3

L

ns

= 150 pF, R = 3 kΩ, See Figure 4

L

Output disable time

ns

dis

‡

Pulse skew

See Figure 3

= 5 V, and T = 25°C.

ns

sk(p)

†

‡

All typical values are at V

CC

= 3.3 V or V

CC

A

Pulse skew is defined as |t

− t

| of each channel of the same device.

PLH PHL

NOTE 4: Test conditions are C1−C4 = 0.1 µF at V

= 3.3 V 0.3 V; C1 = 0.047 µF, C2−C4 = 0.33 µF at V

CC

= 5 V 0.5 V.

CC

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁꢂ ꢃ ꢄꢅ ꢃ

ꢃ ꢆꢇ ꢈ ꢉ ꢊ ꢋꢊ ꢆꢇ ꢀ ꢌꢍꢈ ꢎꢏꢐ ꢁꢑꢑꢒ ꢍ ꢓꢔ ꢆꢄꢃ ꢄ ꢍ ꢎꢑꢒ ꢕꢓꢎ ꢇꢒ ꢓꢖꢓꢒ ꢏꢒ ꢎ ꢇ ꢒꢓ

ꢗ ꢎꢈ ꢐ ꢘ ꢊ ꢆꢙ ꢇ ꢒꢔ ꢕ ꢚꢐꢛꢀ ꢜ ꢝꢓ ꢉ ꢈꢒ ꢏꢈ ꢎꢉ ꢑ

ꢞ

SLLS350L − APRIL 1999 − REVISED MARCH 2004

AUTO-POWERDOWN SECTION

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 5)

†

TYP

PARAMETER

TEST CONDITIONS

FORCEON = GND,

FORCEOFF = V

MIN

MAX

UNIT

Receiver input threshold

for INVALID high-level output voltage

V

2.7

V

T+(valid)

T−(valid)

T(invalid)

OH

CC

FORCEON = GND,

FORCEOFF = V

Receiver input threshold

for INVALID high-level output voltage

−2.7

−0.3

V

CC

FORCEON = GND,

FORCEOFF = V

Receiver input threshold

for INVALID low-level output voltage

0.3

0.4

CC

= −1 mA, FORCEON = GND,

I

OH

FORCEOFF = V

INVALID high-level output voltage

INVALID low-level output voltage

V

−0.6

CC

= 1.6 mA, FORCEON = GND,

I

OL

FORCEOFF = V

OL

CC

†

All typical values are at V

CC

= 3.3 V or V = 5 V, and T = 25°C.

CC A

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 5)

†

PARAMETER

Propagation delay time, low- to high-level output

Propagation delay time, high- to low-level output

Supply enable time

MIN TYP

MAX

UNIT

µs

t

1

valid

invalid

en

30

µs

100

µs

†

All typical values are at V

= 3.3 V or V = 5 V, and T = 25°C.

CC A

CC

PARAMETER MEASUREMENT INFORMATION

3 V

0 V

Input

RS-232

Output

Generator

(see Note B)

50 Ω

C

t

TLH

L

THL

R

L

(see Note A)

V

OH

OL

3 V

−3 V

3 V

FORCEOFF

3 V

−3 V

Output

V

6 V

t_THLor t_TLH

SR(tr) +

TEST CIRCUIT

VOLTAGE WAVEFORMS

NOTES: A.

C includes probe and jig capacitance.

L

B. The pulse generator has the following characteristics: PRR = 250 kbit/s, Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, t ≤ 10 ns.

O

r

f

Figure 1. Driver Slew Rate

7

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ

ꢁ

ꢂ

ꢃꢄ

ꢅ

ꢃ

ꢞ

ꢃ

ꢆ

ꢇ

ꢈꢉ

ꢊ

ꢋ

ꢊ

ꢆ

ꢇ

ꢀ

ꢌ

ꢍꢈ

ꢎ

ꢏ

ꢐ

ꢁ

ꢑ

ꢒ

ꢍ

ꢓ

ꢔ

ꢆ

ꢄ

ꢃ

ꢄ

ꢍ

ꢎ

ꢑ

ꢒ

ꢕ

ꢓ

ꢎ

ꢇ

ꢒ

ꢓ

ꢖ

ꢓ

ꢒ

ꢏ

ꢒ

ꢎ

ꢇ

ꢒ

ꢓ

ꢗ

ꢎ

ꢈ

ꢐ

ꢘ

ꢊꢆ

ꢙ

ꢇ

ꢒ

ꢔ

ꢕ

ꢚ

ꢐ

ꢛ

ꢀ

ꢜ

ꢝ

ꢓ

ꢉ

ꢈ

ꢒ

ꢏ

ꢈ

ꢎ

ꢉ

ꢑ

SLLS350L − APRIL 1999 − REVISED MARCH 2004

PARAMETER MEASUREMENT INFORMATION

3 V

0 V

Input

1.5 V

RS-232

Output

Generator

(see Note B)

50 Ω

C

t

L

PHL

PLH

R

L

(see Note A)

V

OH

3 V

FORCEOFF

50%

Output

OL

TEST CIRCUIT

C includes probe and jig capacitance.

L

VOLTAGE WAVEFORMS

NOTES: A.

B. The pulse generator has the following characteristics: PRR = 250 kbit/s, Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, t ≤ 10 ns.

O

r

f

Figure 2. Driver Pulse Skew

3 V or 0 V

FORCEON

3 V

−3 V

Input

1.5 V

Output

Generator

(see Note B)

t

PLH

PHL

50 Ω

C

L

(see Note A)

3 V

V

OH

FORCEOFF

50%

Output

OL

TEST CIRCUIT

C includes probe and jig capacitance.

L

VOLTAGE WAVEFORMS

NOTES: A.

B. The pulse generator has the following characteristics: Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, t ≤ 10 ns.

O

r

f

Figure 3. Receiver Propagation Delay Times

3 V

0 V

Input

1.5 V

V

CC

S1

GND

3 V or 0 V

FORCEON

t

PHZ

PZH

(S1 at GND)

R

L

V

OH

3 V or 0 V

Output

50%

Output

0.3 V

C

L

(see Note A)

FORCEOFF

50 Ω

t

PLZ

(S1 at V

PZL

(S1 at V

)

CC

Generator

(see Note B)

0.3 V

Output

50%

V

OL

TEST CIRCUIT

VOLTAGE WAVEFORMS

NOTES: A.

C includes probe and jig capacitance.

L

B. The pulse generator has the following characteristics: Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, t ≤ 10 ns.

O

r

f

C.

D.

t

and t

are the same as t

.

dis

PLZ

PZL

PHZ

PZH

are the same as t

.

en

Figure 4. Receiver Enable and Disable Times

8

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁꢂ ꢃ ꢄꢅ ꢃ

ꢃ ꢆꢇ ꢈ ꢉ ꢊ ꢋꢊ ꢆꢇ ꢀ ꢌꢍꢈ ꢎꢏꢐ ꢁꢑꢑꢒ ꢍ ꢓꢔ ꢆꢄꢃ ꢄ ꢍ ꢎꢑꢒ ꢕꢓꢎ ꢇꢒ ꢓꢖꢓꢒ ꢏꢒ ꢎ ꢇ ꢒꢓ

ꢗ ꢎꢈ ꢐ ꢘ ꢊ ꢆꢙ ꢇ ꢒꢔ ꢕ ꢚꢐꢛꢀ ꢜ ꢝꢓ ꢉ ꢈꢒ ꢏꢈ ꢎꢉ ꢑ

ꢞ

SLLS350L − APRIL 1999 − REVISED MARCH 2004

PARAMETER MEASUREMENT INFORMATION

3 V

2.7 V

0 V

Receiver

Input

−2.7 V

ROUT

−3 V

Generator

(see Note B)

50 Ω

t

valid

invalid

V

CC

50% V

CC

50% V

CC

0 V

INVALID

Output

t

Auto-

powerdown

en

INVALID

= 30 pF

≈V+

V+

C

L

(see Note A)

0.3 V

Supply

Voltages

V

CC

0 V

0.3 V

FORCEOFF

FORCEON

DIN

DOUT

≈V−

V−

TEST CIRCUIT

VOLTAGE WAVEFORMS

Valid RS-232 Level, INVALID High

2.7 V

0.3 V

Indeterminate

If Signal Remains Within This Region

For More Than 30 µs, INVALID Is Low

0 V

†

−0.3 V

Indeterminate

−2.7 V

Valid RS-232 Level, INVALID High

†

Auto-powerdown disables drivers and reduces

supply current to 1 µA.

NOTES: A.

C includes probe and jig capacitance.

L

B. The pulse generator has the following characteristics: PRR = 5 kbit/s, Z = 50 Ω, 50% duty cycle, t ≤ 10 ns, t ≤ 10 ns.

O

r

f

Figure 5. INVALID Propagation Delay Times and Supply Enabling Time

9

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ

ꢁ

ꢂ

ꢃꢄ

ꢅ

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ꢃ

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ꢉ

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ꢋ

ꢊꢆ

ꢇ

ꢀ

ꢌ

ꢍꢈ

ꢎ

ꢏ

ꢐ

ꢁ

ꢑ

ꢒ

ꢍ

ꢓ

ꢔ

ꢆ

ꢄ

ꢃ

ꢄ

ꢍ

ꢎ

ꢑ

ꢒ

ꢕ

ꢓ

ꢎ

ꢇ

ꢒ

ꢓ

ꢖ

ꢓ

ꢒ

ꢏ

ꢒ

ꢎ

ꢇ

ꢒ

ꢓ

ꢗ

ꢎ

ꢈ

ꢐ

ꢘ

ꢊ

ꢆ

ꢙ

ꢇ

ꢒ

ꢔ

ꢕ

ꢚ

ꢐ

ꢛ

ꢀ

ꢜ

ꢝ

ꢓ

ꢉ

ꢈꢒ

ꢏ

ꢈ

ꢎ

ꢉ

ꢑ

SLLS350L − APRIL 1999 − REVISED MARCH 2004

APPLICATION INFORMATION

28

27

C1+

V+

1

2

C2+

C2−

+

−

+

C2

−

†

C3

+

−

C1

26

V

CC

GND

C1−

+

−

C

BYPASS

= 0.1 µF

3

25

24

23

V−

−

C4

+

4

5

6

7

8

RIN1

RIN2

FORCEON

FORCEOFF

RIN3

22

RS-232 Inputs

RIN4

RIN5

21

20

INVALID

ROUT2B

9

DOUT1

DOUT2

19

18

17

10

ROUT1

ROUT2

RS-232 Outputs

5 kΩ

11

DOUT3

5 kΩ

Logic Outputs

12

13

14

DIN3

DIN2

DIN1

ROUT3

5 kΩ

16

15

Logic Inputs

ROUT4

ROUT5

5 kΩ

V

vs CAPACITOR VALUES

CC

†

C3 can be connected to V

or GND.

NOTES: A. Resistor values shown are nominal.

CC

V

C1

C2, C3, and C4

CC

B. Nonpolarized ceramic capacitors are acceptable. If polarized

tantalum or electrolytic capacitors are used, they should be

connected as shown.

3.3 V 0.3 V

5 V 0.5 V

3 V to 5.5 V

0.1 µF

0.047 µF

0.1 µF

0.33 µF

0.47 µF

Figure 6. Typical Operating Circuit and Capacitor Values

10

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM

www.ti.com

18-Jul-2006

PACKAGING INFORMATION

Orderable Device

MAX3243CDB

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SSOP

DB

28

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

MAX3243CDBE4

MAX3243CDBR

MAX3243CDBRE4

MAX3243CDBRG4

MAX3243CDW

SSOP

SOIC

DB

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

DB

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

DB

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

DW

PW

DB

20 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

MAX3243CDWE4

MAX3243CDWR

MAX3243CPW

SOIC

20 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

SOIC

1000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TSSOP

SSOP

SOIC

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

MAX3243CPWE4

MAX3243CPWG4

MAX3243CPWR

MAX3243CPWRE4

MAX3243CPWRG4

MAX3243IDB

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

MAX3243IDBE4

MAX3243IDBR

DB

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

DB

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

MAX3243IDBRE4

MAX3243IDBRG4

MAX3243IDW

DB

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

DB

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

DW

PW

20 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

MAX3243IDWR

MAX3243IDWRE4

MAX3243IPW

SOIC

1000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

SOIC

1000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TSSOP

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

MAX3243IPWG4

MAX3243IPWR

50 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

18-Jul-2006

Orderable Device

MAX3243IPWRE4

MAX3243IPWRG4

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

TSSOP

PW

28

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

TSSOP

PW

28

2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and

package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS

compatible) as defined above.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is

provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the

accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take

reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on

incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited

information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

to Customer on an annual basis.

Addendum-Page 2

MECHANICAL DATA

MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001

DB (R-PDSO-G**)

PLASTIC SMALL-OUTLINE

28 PINS SHOWN

0,38

0,22

0,65

28

M

0,15

15

0,25

0,09

5,60

5,00

8,20

7,40

Gage Plane

1

14

0,25

A

0°–ā8°

0,95

0,55

Seating Plane

0,10

2,00 MAX

0,05 MIN

PINS **

14

16

20

24

28

30

38

DIM

6,50

5,90

6,50

5,90

7,50

8,50

7,90

10,50

9,90

10,50 12,90

A MAX

A MIN

6,90

9,90

12,30

4040065 /E 12/01

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.

C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.

D. Falls within JEDEC MO-150

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MECHANICAL DATA

MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999

PW (R-PDSO-G**)

PLASTIC SMALL-OUTLINE PACKAGE

14 PINS SHOWN

0,30

0,19

M

0,10

0,65

14

8

0,15 NOM

4,50

4,30

6,60

6,20

Gage Plane

0,25

1

7

0°–8°

A

0,75

0,50

Seating Plane

0,10

0,15

0,05

1,20 MAX

PINS **

8

14

16

20

24

28

DIM

3,10

2,90

5,10

4,90

5,10

4,90

6,60

6,40

7,90

9,80

9,60

A MAX

A MIN

7,70

4040064/F 01/97

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.

C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.

D. Falls within JEDEC MO-153

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,

enhancements, improvements, and other changes to its products and services at any time and to discontinue

any product or service without notice. Customers should obtain the latest relevant information before placing

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TI warrants performance of its hardware products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI

deems necessary to support this warranty. Except where mandated by government requirements, testing of all

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Logic

interface.ti.com

logic.ti.com

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Wireless

www.ti.com/wireless

Mailing Address:

Texas Instruments

Post Office Box 655303 Dallas, Texas 75265


型号：	MAX3243IDBRG4
厂家：	TEXAS INSTRUMENTS
描述：	3-V TO 5.5-V MULTICHANNEL RS-232 LINE DRIVER/RECEIVER WITH +-15-kV ESD (HBM) PROTECTION 3V至5.5V多通道RS - 232线路驱动器/接收器，具有±15 - kV的ESD （ HBM ）保护驱动器
文件：	总16页 (文件大小：299K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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