TC74LCX163245FT_07 [TOSHIBA]

16-Bit Dual Supply Bus Transceiver; 16位双电源总线收发器


型号：	TC74LCX163245FT_07
厂家：	TOSHIBA
描述：	16-Bit Dual Supply Bus Transceiver 16位双电源总线收发器总线收发器
文件：	总11页 (文件大小：194K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TC74LCX163245FT

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74LCX163245FT

16-Bit Dual Supply Bus Transceiver

The TC74LCX163245FT is a dual supply, advanced high-speed

CMOS 16-bit dual supply voltage interface bus transceiver

fabricated with silicon gate CMOS technology.

Designed for use as an interface between a 3.3-V or a 2.5-V bus

and a 5-V bus in mixed 3.3-V or 2.5-V/5-V supply systems, it

achieves high-speed operation while maintaining the CMOS low

power dissipation. It is intended for two-way asynchronous

communication between data busses.

The direction of data transmission is determined by the level of

the DIR input.

The enable input ( OE ) can be used to disable the device so

that the buses are effectively isolated. The B-port interfaces with

the 3.3-V or 2.5-V bus, the A-port with the 5 V bus.

Weight: 0.25 g (typ.)

All inputs are equipped with protection circuits against static discharge or transient excess voltage.

Features (Note 1) (Note 2)

•

Bidirectional interface between 3.3 V or 2.5 V buses and 5 V buses

High-speed operation: = 7.0 ns (max)

(V = 3.3 ± 0.3 V/V

= 5 ± 0.5 V, Ta = −40 to 85°C)

CCA

CCB

•

Low power dissipation: I

= 80 μA (max) (Ta = −40 to 85°C)

Symmetrical ouput impedance: I

= ±24 mA (min)

OUTB

OUTA

CCB

= 3.0 V/V

= 4.5 V)

CCA

•

Power-down protection provided on all inputs and outputs

Allows A port and V to float simultaneously in high state at OE pin

CCA

Latch-up performance: −500 mA

ESD performance: Machine model > ±200 V (Note 2)

Package: TSSOP

Note 1: Do not apply a signal to any bus pins when it is in the output mode.

Damage may result. All floating (high impedance) bus pins must have their input fixed by means of pull-up

or pull-down resistors.

Note 2: This device is electrostatic sensitivity (human body model > 1 kV).

Please handle with caution.

2007-10-19

TC74LCX163245FT

Pin Assignment (top view)

IEC Logic Symbol

1OE

1DIR

1B1

1B2

GND

1B3

1B4

1OE

3 EN1 (BA)

3 EN2 (AB)

1DIR

47 1A1

46 1A2

45 GND

44 1A3

43 1A4

2OE

6 EN4 (BA)

6 EN5 (AB)

2DIR

1B1

1A1

1B2

1B3

1B4

1B5

1B6

1B7

1B8

2B1

1A2

1A3

1A4

1A5

1A6

1A7

1A8

2A1

(3.3 V) V

CCA

(5 V)

CCB

1B5

41 1A5

40 1A6

39 GND

38 1A7

37 1A8

36 2A1

35 2A2

34 GND

33 2A3

32 2A4

1B6

GND 10

1B7 11

1B8 12

2B1 13

2B2 14

GND 15

2B3 16

2B4 17

2B2

2B3

2B4

2B5

2B6

2B7

2B8

2A2

2A3

2A4

2A5

2A6

2A7

2A8

(3.3 V) V

CCA

(5 V)

CCB

2B5 19

2B6 20

30 2A5

29 2A6

28 GND

27 2A7

26 2A8

GND 21

2B7 22

2B8 23

2DIR 24

2OE

2007-10-19

TC74LCX163245FT

Truth Table

Inputs

Function

Outputs

Bus

1OE

1DIR

1A1-1A8

Output

Input

1B1-1B8

Input

A = B

B = A

Output

Inputs

Function

Outputs

Bus

2OE

2DIR

2A1-2A8

Output

Input

2B1-2B8

Input

A = B

B = A

Output

X: Don’t care

Z: High impedance

2007-10-19

TC74LCX163245FT

Block Diagram

CCB

CCA

1DIR

Logic

level

converter

1OE

1B1

1A1

1A8

Same as above block

1B8

CCB

CCA

2DIR

Logic

level

converter

2OE

2B1

2A1

2A8

Same as above block

2B8

2007-10-19

TC74LCX163245FT

Absolute Maximum Ratings (Note 1)

Characteristics

Symbol

Rating

Unit

−0.5 to 7.0

CCB

Power supply voltage

(Note 2)

CCA

DC input voltage

(DIR, OE )

−0.5 to 7.0

−0.5 to 7.0 (Note 3)

I/OB

−0.5 to V

+ 0.5

(Note 4)

−0.5 to 7.0 (Note 3)

CCB

DC bus I/O voltage

I/OA

−0.5 to V

+ 0.5

CCA

(Note 4)

Input diode current

Output diode current

−50

±50

(Note 5)

I/OK

±50

OUTB

OUTA

DC output current

±50

±100

400

CCB

CCA

DC V /ground current per supply pin

Power dissipation

Storage temperature

stg

−65 to 150

°C

Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or

even destruction.

Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the

significant change in temperature, etc.) may cause this product to decrease in the reliability significantly

even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute

maximum ratings and the operating ranges.

Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook

(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test

report and estimated failure rate, etc).

Note 2: Don’t supply a voltage to V

Note 3: Output in OFF state

pin when V is in the OFF state.

CCB

CCA

Note 4: High or low state. I

OUT

absolute maximum rating must be observed.

Note 5:

OUT

< GND, V

OUT

> V

2007-10-19

TC74LCX163245FT

Operating Ranges (Note 1)

Characteristics

Symbol

Rating

Unit

2.3 to 3.6

4.5 to 5.5

CCB

Power supply voltage

CCA

Input voltage

(DIR, OE )

0 to 5.5

0 to 5.5 (Note 2)

I/OB

I/OA

0 to V

(Note 3)

0 to 5.5 (Note 2)

CCB

Bus I/O voltage

0 to V

CCA

(Note 3)

(Note 4)

(Note 5)

(Note 6)

±24

OUTB

Output current

±8

±24

OUTA

Operating temperature

Input rise and fall time

−40 to 85

°C

opr

dt/dv

0 to 10 (Note 7)

ns/V

Note 1: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must

be tied to either VCC or GND. Please connect both bus inputs and the bus outputs with VCC or GND when

the I/O of the bus terminal changes by the function. In this case, please note that the output is not

short-circuited.

Note 2: Output in OFF state

Note 3: High or low state

Note 4:

Note 5:

Note 6:

Note 7:

= 3.0 to 3.6 V

= 2.3 to 2.7 V

= 4.5 to 5.5 V

CCB

CCA

= 0.8 to 2.0 V, V

= 3.0 V

= 5.0 V

INB

CCB

INA

CCA

2007-10-19

TC74LCX163245FT

Electrical Characteristics

DC Characteristics

Ta = −40 to

85°C

Characteristics

Symbol

Test Condition

(V)

Unit

CCB

CCA

Min

1.7

2.0

⎯

Max

2.5 ± 0.2 5.0 ± 0.5

3.3 ± 0.3 5.0 ± 0.5

2.3 to 3.6 5.0 ± 0.5

2.5 ± 0.2 5.0 ± 0.5

3.3 ± 0.3 5.0 ± 0.5

2.3 to 3.6 5.0 ± 0.5

⎯

DIR, OE , Bn

IHB

“H” level input voltage

⎯

IHA

0.7

0.8

DIR, OE , Bn

ILB

ILA

“L” level input voltage

⎯

CCB

− 0.2

2.3 to 3.6 5.0 ± 0.5

⎯

= −100 μA

= −24 mA

= −8mA

OHB

INA

3.0

2.3

5.0 ± 0.5

2.2

1.8

⎯

= V

or V

IHA

ILA

“H” level output voltage

INB

= V

CCA

− 0.2

IHB

ILB

= −100 μA

= −24 mA

2.3 to 3.6 5.0 ± 0.5

⎯

OHA

2.3 to 3.6

4.5

3.8

⎯

5.0 ± 0.5

⎯

0.2

= 100 μA

= 24 mA

= 8 mA

OLB

INA

OLB

3.0

5.0 ± 0.5

4.5

⎯

0.55

0.6

= V

or V

IHA

ILA

“L” level output voltage

2.3

INB

= V

= 100 μA

= 24 mA

2.3 to 3.6

0.2

IHB

ILB

OLA

0.44

OLA

= V

IHB

or V

ILB

2.3 to 3.6 5.0 ± 0.5

⎯

±5.0

OZB

OZA

= V

CCB

or GND

I/OB

3-state output off-state current

μA

= V

IHB

or V

ILB

= V

CCA

or GND

I/OA

Input leakage current

(DIR, OE ) = V

IN CCB

or GND

3.6

5.5

⎯

±5.0

μA

Power off leakage current

= 0 to 5.5 V

OFF

INA INB

I/OA

= Open, V

= Open

CCA

= V

or GND

3.6

Open

⎯

CCB1

CCB2

INB

CCB

CCA

CCB

CCA

CCB

OE = V

, DIR = GND

or GND

INA

INB

INA

INB

INA

= V

3.6

5.5

⎯

μA

or GND

Quiescent supply current

or GND

CCA

or GND

− 0.6 V per input

3.6

5.0 ± 0.5

⎯

500

2.0

CCTB

= 3.4 V per input

2.3 to 3.6

5.5

CCTA

2007-10-19

TC74LCX163245FT

AC Characteristics (input: t = t = 2.5 ns, R = 500 Ω)

CCB

= 3.3 ± 0.3 V

Ta = −40 to

85°C

Characteristics

Symbol

Test Condition

CL (pF)

CCA

(V)

Unit

Min

1.0

Max

Propagation delay time

pLH

5.0 ± 0.5

6.0

9.0

7.0

9.0

1.0

(Bn → An)

pHL

Input: Bn

3-state output enable time

pZL

Output: An

1.0

⎯

( OE → An)

pZH

(DIR = “L”)

3-state output disable time

pLZ

( OE → An)

pHZ

Propagation delay time

pLH

(An → Bn)

pHL

Input: An

3-state output enable time

pZL

Output: Bn

(DIR = “H”)

( OE → Bn)

pZH

3-state output disable time

pLZ

( OE → Bn)

pHZ

osLH

Output to output skew

(Note)

osHL

Note:

Parameter guaranteed by design.

= |t

− t

|, t

= |t

− t

pHLn

osLH

pLHm

pLHn osHL

pHLm

CCB

= 2.5 ± 0.2 V

Ta = −40 to

85°C

Characteristics

Symbol

Test Condition

CL (pF)

CCA

(V)

Unit

Min

1.0

Max

Propagation delay time

pLH

5.0 ± 0.5

8.0

(Bn → An)

pHL

Input: Bn

3-state output enable time

pZL

Output: An

1.0

⎯

12.0

9.0

( OE → An)

pZH

(DIR = “L”)

3-state output disable time

pLZ

( OE → An)

pHZ

Propagation delay time

pLH

(An → Bn)

pHL

Input: An

3-state output enable time

pZL

Output: Bn

(DIR = “H”)

12.0

10.0

1.0

( OE → Bn)

pZH

3-state output disable time

pLZ

( OE → Bn)

pHZ

osLH

Output to output skew

(Note) 30 or 50 5.0 ± 0.5

osHL

Note:

Parameter guaranteed by design.

(t = |t − t |, t = |t

− t |)

pHLn

osLH

pLHm

pLHn osHL

pHLm

2007-10-19

TC74LCX163245FT

Capacitive Characteristics (Ta = 25°C)

= 2.5, 3.3 V

CCB

Test

Circuit

Characteristics

Symbol

Test Condition

(V)

Typ.

Unit

CCA

Input capacitance

⎯

DIR, OE

An, Bn

5.0

Output capacitance

I/O

A ⇒ B (DIR = “H”)

B ⇒ A (DIR = “L”)

A ⇒ B (DIR = “H”)

B ⇒ A (DIR = “L”)

⎯

PDA

PDB

Power dissipation capacitance

(Note)

Note:

is defined as the value of the internal equivalent capacitance which is calculated from the operating

current consumption without load.

Average operating current can be obtained by the equation:

= C ･V ･f + I /16 (per bit)

PD CC IN CC

CC (opr)

2007-10-19

TC74LCX163245FT

Package Dimensions

Weight: 0.25 g (typ.)

2007-10-19

TC74LCX163245FT

RESTRICTIONS ON PRODUCT USE

20070701-EN

• The information contained herein is subject to change without notice.

• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor

devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical

stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of

safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of

such TOSHIBA products could cause loss of human life, bodily injury or damage to property.

In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as

set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and

conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability

Handbook” etc.

• The TOSHIBA products listed in this document are intended for usage in general electronics applications

(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,

etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires

extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or

bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or

spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,

medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his

document shall be made at the customer’s own risk.

• The products described in this document shall not be used or embedded to any downstream products of which

manufacture, use and/or sale are prohibited under any applicable laws and regulations.

• Please contact your sales representative for product-by-product details in this document regarding RoHS

compatibility. Please use these products in this document in compliance with all applicable laws and regulations

that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses

occurring as a result of noncompliance with applicable laws and regulations.

2007-10-19

TC74LCX163245FT_07 [TOSHIBA]

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