Philips Semiconductors

Product specification

74ABT2953

Octal registered transceiver, inverting (3-State)

1995 Sep 06

2

LOGIC SYMBOL

16 17 18

19

20

21 22

23

A0 A1 A2 A3 A4 A5 A6 A7

B0 B1 B2 B3 B4 B5 B6 B7

876

5

4

3

2

1

15

9

10

14

11

13

CPAB

CPBA

CEAB

CEBA

OEBA

OEAB

SA00306

LOGIC SYMBOL (IEEE/IEC)

C6

1, 4, 5

14

16

8

17

7

18

6

19

5

20

4

21

3

22

2

23

1

2, 3, 6

C5

10

EN4

9

EN3

15

EN2

13

EN1

11

SA00307

FUNCTION TABLE for Register An or Bn

INPUTS

INTERNAL

OPERATING

An or

Bn

CPXX

CEXX

Q

MODE

X

X

H

NC

Hold data

L

H

↑

↑

L

L

L

H

Load data

H = High voltage level

L

= Low voltage level

↑ = Low-to-High transition

X = Don’t care

XX = AB or BA

NC= No change

FUNCTION TABLE for Output Enable

INPUTS

INTERNAL

An or Bn

OPERATING

OEXX

Q

OUTPUTS

MODE

H

X

Z

Disable outputs

L

L

L

H

H

L

Enable outputs

H = High voltage level

L

= Low voltage level

X = Don’t care

XX = AB or BA

Z = High impedance ”off” state

SYMBOL

PARAMETER

CONDITIONS

RATING

UNIT

DC supply voltage

–0.5 to +7.0

V

DC input diode current

–18

mA

–1.2 to +7.0

V

DC output diode current

–50

mA

output in Off or High state

–0.5 to +5.5

V

DC output current

output in Low state

128

mA

Storage temperature range

–65 to 150

°C

NOTES:

1. Stresses beyond those listed 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.

2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction

temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150

°C.

3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.