MC74LCX16501_技术文档

SEMICONDUCTOR TECHNICAL DATA

The MC74LCX16501 is a high performance, non–inverting 18–bit

universal bus transceiver operating from a 2.7 to 3.6V supply. This part is

not byte controlled; it is “18–bit” controlled. High impedance TTL

compatible inputs significantly reduce current loading to input drivers

while TTL compatible outputs offer improved switching noise

LOW–VOLTAGE CMOS

18–BIT UNIVERSAL BUS

TRANSCEIVER

performance. A V specification of 5.5V allows MC74LCX16501 inputs to

I

be safely driven from 5V devices. The MC74LCX16501 is suitable for

memory address driving and all TTL level bus oriented transceiver

applications.

Data flow in each direction is controlled by Output Enable (OEAB,

OEBA), Latch Enable (LEAB, LEBA) and Clock inputs (CAB, CBA). When

LEAB is HIGH, the A–to–B dataflow is transparent. When LEAB is LOW,

and CAB is held at LOW or HIGH, the data A is latched; on the

LOW–to–HIGH transition of CAB the A–data is stored in the

latch/flip–flop. The outputs are active when OEAB is HIGH. When OEAB

is LOW the B–outputs are in 3–state. Similarly, the LEBA, OEBA and CBA

control the B–to–A dataflow. Please note that the output enables are

complementary; OEAB is active HIGH, OEBA is active LOW.

DT SUFFIX

56–LEAD PLASTIC TSSOP PACKAGE

CASE 1202–01

• Designed for 2.7 to 3.6V V

CC

Operation

• 6ns t Maximum

pd

• 5V Tolerant — Interface Capability With 5V TTL Logic

• Supports Live Insertion and Withdrawal

• I

OFF

Specification Guarantees High Impedance When V

= 0V

CC

• LVTTL Compatible

• LVCMOS Compatible

PIN NAMES

• 24mA Balanced Output Sink and Source Capability

Pins

Function

• Near Zero Static Supply Current in All Three Logic States (20µA)

Substantially Reduces System Power Requirements

OEAB, OEBA

CAB, CBA

LEAB, LEBA

A0–A17

Output Enable Inputs

Clock Pulse Inputs

Latch Enable Inputs

Side A Inputs/Outputs

Side B Inputs/Outputs

• Latchup Performance Exceeds 500mA

• ESD Performance: Human Body Model >2000V; Machine

Model >200V

B0–B17

3/97

REV 1

1

Motorola, Inc. 1997

MC74LCX16501

OEAB

LEAB

A0

GND

CAB

B0

1

2

56

55

54

3

GND

A1

4

53 GND

B1

B2

V

5

52

51

50

49

48

47

A2

6

1

OEAB

CBA

V

7

CC

30

28

27

55

2

A3

A4

A5

B3

B4

B5

8

9

LEBA

OEBA

CAB

10

GND 11

46 GND

A6

A7

B6

12

13

14

15

16

17

45

44

43

42

41

40

B7

LEAB

A8

B8

A9

B9

C1

1D

C1

1D

54

A10

A11

B10

B11

B0

3

A0

GND 18

39 GND

A12

A13

A14

B12

B13

B14

19

20

21

22

23

24

25

26

27

28

38

37

36

35

34

33

32

31

30

29

C1

1D

C1

1D

V

CC

A15

B15

A16

GND

A17

B16

GND

B17

OEBA

LEBA

CBA

GND

To 17 Other Channels

Figure 1. 56-Lead Pinout

Figure 2. Logic Diagram

(Top View)

MOTOROLA

2

LCX DATA

BR1339 — REV 3

MC74LCX16501

FUNCTION TABLE

Data

Ports

Inputs

Operating Mode

OEAB

OEBA

LEAB

LEBA

CAB

CBA

An

Bn

Input

X

L

H

Input

X

H or L

Hold Data; A and B Outputs Disabled

L

l

h

l

h

↑

Clock A and/or B Data; A and B Outputs Disabled

H

L

Input

X

Output

QA

H or L

X*

Hold and Display B Data

L

X

l

h

L

H

↑

Clock A Data to B Bus; Store A Data

L

H

L

H

X

X*

A Data to B Bus; (Transparent)

L

Output

QB

Input

X

X*

H or L

Hold and Display A Data

X

L

H

l

h

↑

Clock B Data to A Bus; Store B Data

L

H

L

H

X*

X

B Data to A Bus; (Transparent)

H

Output Output

QB QA

L

H or L

Stored A Data to B Bus; Stored B Data to A Bus

H = High Voltage Level; L = Low Voltage Level; h = High Voltage Level One Setup Time Prior to the Latch Enable or Clock Low–to–High Transition; l = Low Voltage

Level One Setup Time Prior to the Latch Enable or Clock Low–to–High Transition; X = Don’t Care; ↑ = Low–to–High Clock Transition; QA = A input storage register;

QB = B input storage register; * = The clocks are not internally gated with either the Output Enables or the Source Inputs. Therefore, data at the A or B ports may be

clocked into the storage registers, at any time. For I

reasons, Do Not Float Inputs.

CC

LCX DATA

3

MOTOROLA

BR1339 — REV 3

MC74LCX16501

Real Time Transfer – Bus B to

Bus A

Real Time Transfer – Bus A to

Bus B

OEAB OEBA

CAB

CBA

X

LEAB LEBA

OEAB OEBA

CAB

X

CBA

X

LEAB LEBA

L

X

H

X

Transfer A Stored Data to Bus B

or B Stored Data to Bus A or

Both at the Same Time

Store Data from Bus A, Bus B or

Bus A and Bus B

OEAB OEBA

CAB

CBA

LEAB LEBA

OEAB OEBA

CAB

CBA

LEAB LEBA

X

L

H

X

H

↑

X

↑

X

L

X

L

X

L

H

L

H

L

↑

X

↑

L

X

L

X

L

H or L H or L

Store Bus A in Both Registers or

Store Bus B in Both Registers

Isolation

OEAB OEBA

CAB

CBA

LEAB LEBA

OEAB OEBA

CAB

CBA

LEAB LEBA

H

L

H

L

X

L

H

H or L H or L

L

Figure 3. Bus Applications

MOTOROLA

4

LCX DATA

BR1339 — REV 3

MC74LCX16501

ABSOLUTE MAXIMUM RATINGS*

Symbol

CC

Parameter

Value

Condition

Unit

V

DC Supply Voltage

DC Input Voltage

DC Output Voltage

–0.5 to +7.0

–0.5 ≤ V ≤ +7.0

V

I

–0.5 ≤ V ≤ +7.0

Output in 3–State

Note 1.

V

O

–0.5 ≤ V ≤ V

+ 0.5

CC

V

O

I

DC Input Diode Current

DC Output Diode Current

–50

V < GND

mA

°C

IK

I

V

O

< GND

OK

+50

V > V

O CC

I

DC Output Source/Sink Current

DC Supply Current Per Supply Pin

DC Ground Current Per Ground Pin

Storage Temperature Range

±50

O

±100

CC

GND

T

–65 to +150

STG

* Absolutemaximumcontinuousratingsarethosevaluesbeyondwhichdamagetothedevicemayoccur. Exposuretotheseconditionsorconditions

beyond those indicated may adversely affect device reliability. Functional operation under absolute–maximum–rated conditions is not implied.

1. Output in HIGH or LOW State. I absolute maximum rating must be observed.

O

RECOMMENDED OPERATING CONDITIONS

Symbol

CC

Parameter

Min

Typ

Max

Unit

V

Supply Voltage

Operating

Data Retention Only

2.0

1.5

3.3

3.6

V

Input Voltage

0

5.5

V

I

Output Voltage

(HIGH or LOW State)

(3–State)

0

V

CC

O

5.5

–24

24

I

HIGH Level Output Current, V

= 3.0V – 3.6V

mA

°C

OH

OL

OH

OL

CC

LOW Level Output Current, V

= 3.0V – 3.6V

= 2.7V – 3.0V

CC

HIGH Level Output Current, V

–12

12

CC

LOW Level Output Current, V

CC

T

A

Operating Free–Air Temperature

Input Transition Rise or Fall Rate, V from 0.8V to 2.0V,

–40

0

+85

10

∆t/∆V

ns/V

IN

V

= 3.0V

CC

DC ELECTRICAL CHARACTERISTICS

T

A

= –40°C to +85°C

Symbol

Characteristic

HIGH Level Input Voltage (Note 2.)

LOW Level Input Voltage (Note 2.)

HIGH Level Output Voltage

Condition

Min

2.0

Max

Unit

V

2.7V ≤ V

≤ 3.6V

IH

CC

2.7V ≤ V

≤ 3.6V

= –100µA

0.8

V

IL

≤ 3.6V; I

V

– 0.2

V

OH

CC

OH

CC

V

CC

V

CC

V

CC

= 2.7V; I

= 3.0V; I

= –12mA

= –18mA

= –24mA

2.2

OH

2.4

2.2

V

OL

LOW Level Output Voltage

2.7V ≤ V

≤ 3.6V; I

= 100µA

0.2

0.4

V

CC

OL

V

= 2.7V; I = 12mA

CC

V

= 3.0V; I

= 16mA

= 24mA

0.4

OL

0.55

2. These values of V are used to test DC electrical characteristics only.

I

LCX DATA

5

MOTOROLA

BR1339 — REV 3

MC74LCX16501

DC ELECTRICAL CHARACTERISTICS (continued)

T

A

= –40°C to +85°C

Symbol

Characteristic

Input Leakage Current

Condition

≤ 3.6V; 0V ≤ V ≤ 5.5V

Min

Max

±5.0

Unit

µA

I

2.7V ≤ V

I

CC

I

3–State Output Current

2.7 ≤ V

≤ 3.6V; 0V ≤ V ≤ 5.5V;

µA

OZ

CC

V = V or V

IL

O

I

IH

I

Power–Off Leakage Current

Quiescent Supply Current

V

= 0V; V or V = 5.5V

10

20

µA

OFF

CC

I

O

2.7 ≤ V

≤ 3.6V; V = GND or V

CC

I

CC

2.7 ≤ V

≤ 3.6V; 3.6 ≤ V or V ≤ 5.5V

±20

500

CC

I

O

∆I

CC

Increase in I

CC

per Input

2.7 ≤ V

≤ 3.6V; V = V

IH

– 0.6V

CC

AC CHARACTERISTICS (Note 3.; t = t = 2.5ns; C = 50pF; R = 500Ω)

R

F

L

Limits

= –40°C to +85°C

T

A

V

= 3.0V to 3.6V

Max

V

= 2.7V

CC

Symbol

Parameter

Waveform

Min

Max

Unit

MHz

ns

f

Maximum Clock Frequency

3

1

170

max

t

Propagation Delay

Input to Output

1.5

6.0

1.5

7.0

PHL

PLH

t

Propagation Delay

Clock to Output

3

4

2

1.5

6.7

1.5

8.0

ns

PHL

PLH

t

Propagation Delay

LExx to Output

1.5

7.0

1.5

8.0

PHL

PLH

t

Output Enable Time to

High and Low Level

1.5

7.2

1.5

8.2

PZH

PZL

t

Output Disable Time From

High and Low Level

1.5

7.0

1.5

8.0

PHZ

PLZ

t

Setup Time

3,4

2.5

1.5

3.0

2.5

1.5

3.0

ns

s

Hold Time

h

w

Pulse Width Time

t

Output–to–Output Skew

(Note 4.)

1.0

OSHL

OSLH

3. These AC parameters are preliminary and may be modified prior to release.

4. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device.

The specification applies to any outputs switching in the same direction, either HIGH–to–LOW (t

guaranteed by design.

) or LOW–to–HIGH (t

OSHL

); parameter

OSLH

DYNAMIC SWITCHING CHARACTERISTICS

T

A

= +25°C

Symbol

Characteristic

Condition

Min

Typ

0.8

Max

Unit

V

Dynamic LOW Peak Voltage (Note 5.)

Dynamic LOW Valley Voltage (Note 5.)

V

= 3.3V, C = 50pF, V = 3.3V, V = 0V

L IH IL

OLP

CC

= 3.3V, C = 50pF, V = 3.3V, V = 0V

IH IL

V

OLV

CC

L

5. Number of outputs defined as “n”. Measured with “n–1” outputs switching from HIGH–to–LOW or LOW–to–HIGH. The remaining output is

measured in the LOW state.

MOTOROLA

6

LCX DATA

BR1339 — REV 3

MC74LCX16501

CAPACITIVE CHARACTERISTICS

Symbol

Parameter

Condition

= 3.3V, V = 0V or V

Typical

Unit

pF

C

Input Capacitance

V

7

8

IN

CC

I

CC

Input/Output Capacitance

Power Dissipation Capacitance

= 3.3V, V = 0V or V

pF

I/O

PD

CC

I

10MHz, V

= 3.3V, V = 0V or V

CC

20

pF

CC

I

2.7V

An, Bn

Bn, An

1.5V

0V

t

, t

PLH PHL

V

OH

OL

1.5V

V

WAVEFORM 1 – An to Bn PROPAGATION DELAYS

t

= t = 2.5ns, 10% to 90%; f = 1MHz; t = 500ns

R

F

W

2.7V

OEBA

1.5V

0V

OEAB

t

PHZ

PZH

V

– 0.3V

OH

1.5V

An, Bn

≈

0V

t

PLZ

PZL

≈

3.0V

An, Bn

V

+ 0.3V

OL

WAVEFORM 2 – OEBA/OEAB to An/Bn OUTPUT ENABLE AND DISABLE TIMES

t

= t = 2.5ns, 10% to 90%; f = 1MHz; t = 500ns

R

F

W

Figure 4. AC Waveforms

LCX DATA

7

MOTOROLA

BR1339 — REV 3

MC74LCX16501

2.7V

An, Bn

1.5V

0V

t

s

h

2.7V

CAB,

CBA

1.5V

w

0V

f

max

t

, t

PLH PHL

V

OH

Bn, An

1.5V

OL

WAVEFORM 3 – CLOCK to Bn/An PROPAGATION DELAYS, CLOCK MINIMUM PULSE WIDTH,

An/Bn to CLOCK SETUP AND HOLD TIMES

t

= t = 2.5ns, 10% to 90%; f = 1MHz; t = 500ns except when noted

R

F W

2.7V

1.5V

An, Bn

0V

t

h

s

2.7V

LEAB,

LEBA

t

1.5V

w

0V

t

, t

PLH PHL

V

OH

OL

Bn, An

1.5V

V

WAVEFORM 4 – LExx to An, Bn PROPAGATION DELAYS, LExx MINIMUM

PULSE WIDTH, An, Bn to LExx SETUP AND HOLD TIMES

t

= t = 2.5ns, 10% to 90%; f = 1MHz; t = 500ns except when noted

R

F W

t

w

NEGATIVE

PULSE

1.5V

POSITIVE

PULSE

t

w

WAVEFORM 5 – INPUT PULSE DEFINITION

= t = 2.5ns, 10% to 90% of 0V to 2.7V

t

R

F

Figure 5. AC Waveforms (continued)

MOTOROLA

8

LCX DATA

BR1339 — REV 3

MC74LCX16501

V

CC

6V

OPEN

GND

R

L

1

PULSE

GENERATOR

DUT

R

C

R

T

L

TEST

SWITCH

Open

6V

t , t

PLH PHL

t , t

PZL PLZ

Open Collector/Drain t

PLH

and t

PHL

6V

t

, t

GND

PZH PHZ

C

R

= 50pF or equivalent (Includes jig and probe capacitance)

L

T

= R = 500Ω or equivalent

1

OUT

= Z

of pulse generator (typically 50Ω)

Figure 6. Test Circuit

LCX DATA

9

MOTOROLA

BR1339 — REV 3

MC74LCX16501

OUTLINE DIMENSIONS

DT SUFFIX

PLASTIC TSSOP PACKAGE

CASE 1202–01

ISSUE A

56X K REF

0.12 (0.005)

K

K1

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ANSI Y14.5M, 1982.

M

S

T

U

V

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE

MOLD FLASH, PROTRUSIONS OR GATE

BURRS. MOLD FLASH OR GATE BURRS

SHALL NOT EXCEED 0.15 (0.006) PER SIDE.

4. DIMENSION K DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.08 (0.003) TOTAL

IN EXCESS OF THE K DIMENSION AT

MAXIMUM MATERIAL CONDITION.

5. TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

J

J1

56

29

28

SECTION N–N

B

L

–U–

N

1

6. DIMENSIONS A AND B ARE TO BE

DETERMINED AT DATUM PLANE –W–.

MILLIMETERS

INCHES

DIM

A

B

C

D

F

G

H

J

J1

K

MIN

13.90

6.00

–––

0.05

0.50

MAX

14.10

6.20

1.10

0.15

0.75

MIN

MAX

0.555

0.244

0.043

0.006

0.030

A

–V–

PIN 1

0.547

0.236

–––

0.002

0.020

IDENT.

N

M

F

0.50 BSC

0.0197 BSC

0.12

0.09

0.17

7.95

0

–––

0.20

0.16

0.27

0.23

8.25

8

0.005

0.004

0.007

0.313

0

–––

0.008

0.006

0.011

0.009

0.325

8

0.25 (0.010)

DETAIL E

D

C

K1

L

M

–W–

0.076 (0.003)

DETAIL E

–T–

SEATING

PLANE

H

G

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding

the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and

specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola

datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”

must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of

others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other

applicationsintended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury

ordeathmayoccur. ShouldBuyerpurchaseoruseMotorolaproductsforanysuchunintendedorunauthorizedapplication,BuyershallindemnifyandholdMotorola

and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees

arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that

Motorola was negligent regarding the design or manufacture of the part. Motorola and

Opportunity/Affirmative Action Employer.

are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal

Mfax is a trademark of Motorola, Inc.

How to reach us:

USA/EUROPE/Locations Not Listed: Motorola Literature Distribution;

P.O. Box 5405, Denver, Colorado 80217. 303–675–2140 or 1–800–441–2447

JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,

3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315

Mfax : RMFAX0@email.sps.mot.com – TOUCHTONE 602–244–6609

ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,

– US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298

INTERNET: http://www.mot.com/SPS/

MC74LCX16501/D

◊

MOTOROLA

10

LCX DATA

BR1339 — REV 3


型号：	MC74LCX16501
厂家：	MOTOROLA
描述：	LOW-VOLTAGE CMOS 18-BIT UNIVERSAL BUS TRANSCEIVER 低电压CMOS 18位通用总线收发器总线收发器
文件：	总10页 (文件大小：163K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MC74LCX16501 [MOTOROLA]

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