Philips Semiconductors

Product specification

74ABT2952

Octal registered transceiver (3-State)

2

1998 Feb 11

853-1554 18949

FEATURES

and 200V per Machine Model

DESCRIPTION

The 74ABT2952 high-performance BiCMOS device combines low

static and dynamic power dissipation with high speed and high

output drive.

The 74ABT2952 device is an 8-bit registered transceiver. Two 8-bit

back-to-back registers store data flowing in both directions between

two bidirectional buses. Data applied to the inputs is entered and

stored on the rising edge of the Clock (CPXX) provided that the

Clock Enable (CEXX) is Low. The data is then present at the 3-State

output buffers, but is only accessible when the Output Enable

(OEXX) is Low. Data flow from A inputs to B outputs is the same as

for B inputs to A outputs.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

Propagation delay

CPBA to An or

CPAB to Bn

5.7

ns

Input capacitance

4

pF

I/O capacitance

7

pF

Total supply current

110

µA

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

OUTSIDE NORTH AMERICA

NORTH AMERICA

DWG NUMBER

24-Pin Plastic DIP

–40

°C to +85°C

74ABT2952 N

74ABT2952 N

SOT222-1

24-Pin plastic SO

–40

°C to +85°C

74ABT2952 D

74ABT2952 D

SOT137-1

24-Pin Plastic SSOP Type II

–40

°C to +85°C

74ABT2952 DB

74ABT2952 DB

SOT340-1

24-Pin Plastic TSSOP Type I

–40

°C to +85°C

74ABT2952 PW

7ABT2952PW DH

SOT355-1

PIN CONFIGURATION

1

2

3

4

5

6

7

8

9

10

15

16

17

18

19

20

21

22

23

24

B7

B6

B5

B4

B3

B2

B1

B0

OEAB

A0

CPAB

A1

A2

A3

A4

A5

A6

A7

OEBA

11

14

CEAB

CPBA

12

13

GND

CEBA

SA00114

PIN DESCRIPTION

PIN

NUMBER

SYMBOL

NAME AND FUNCTION

10, 14

CPAB /

CPBA

Clock input A to B / Clock input B to A

11, 13

CEAB /

CEBA

Clock enable input A to B / Clock

enable input B to A

16, 17, 18,

19, 20, 21,

22, 23

A0 – A7

Data inputs/outputs (A side)

1, 2, 3, 4, 5,

6, 7, 8

B0 – B7

Data outputs/outputs (B side)

9, 15

OEAB /

OEBA

Output enable inputs

12

GND

Ground (0V)

24

Positive supply voltage