Philips 74ABT2952PW, 74ABT2952N, 74ABT2952DB, 74ABT2952D Datasheet

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74ABT2952

Octal registered transceiver (3-State)

Product specification
Supersedes data of 1995 Jun 15

1998 Feb 11

INTEGRATED CIRCUITS

IC23 Data Handbook

Philips Semiconductors Product specification

74ABT2952Octal registered transceiver (3-State)

2

1998 Feb 11 853-1554 18949

FEA TURES

•8-bit registered transceiver

•Independent registers for A and B buses

•Output capability: +64mA/–32mA

•Latch-up protection exceeds 500mA per JEDEC Std 17

•ESD protection exceeds 2000V per MIL STD 883 Method 3015

and 200V per Machine Model

•Power-up 3-State

•Power-up reset

•Live insertion/extraction permitted

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 DA TA

SYMBOL PARAMETER

CONDITIONS

T

amb

= 25°C; GND = 0V

TYPICAL UNIT

t

PLH

t

PHL

Propagation delay
CPBA to An or
CPAB to Bn

CL = 50pF; VCC = 5V 5.7 ns

C

IN

Input capacitance VI = 0V or V

CC

4 pF

C

I/O

I/O capacitance Outputs disabled; VO = 0V or V

CC

7 pF

I

CCZ

Total supply current Outputs disabled; VCC =5.5V 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

V

CC

OEBA

11 14CEAB

CPBA

12 13GND

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 V

CC

Positive supply voltage

Philips Semiconductors Product specification

74ABT2952Octal registered transceiver (3-State)

1998 Feb 11

3

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

87654321

15

9

10

14

11

13

CPAB

CPBA

CEAB

CEBA

OEBA
OEAB

SA00115

LOGIC SYMBOL (IEEE/IEC)

1, 4, 52, 3, 6

SA00116

11
13
15

9
10
14

16
17
18
19
20
21
22
23

EN1
EN2
EN3

EN4

C5
C6

8
7
6
5
4
3
2
1

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

L
H

Enable outputs

H = High voltage level
L =Low voltage level
X = Don’t care
XX= AB or BA
Z =High impedance “off” state

ABSOLUTE MAXIMUM RATINGS

1, 2

SYMBOL

PARAMETER CONDITIONS RATING UNIT

V

CC

DC supply voltage –0.5 to +7.0 V

I

IK

DC input diode current VI < 0 –18 mA

V

I

DC input voltage

3

–1.2 to +7.0 V

I

OK

DC output diode current VO < 0 –50 mA

V

OUT

DC output voltage

3

output in Off or High state –0.5 to +5.5 V

I

OUT

DC output current output in Low state 128 mA

T

stg

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.

Philips Semiconductors Product specification

74ABT2952Octal registered transceiver (3-State)

1998 Feb 11

4

LOGIC DIAGRAM

CEAB

CE

Q

CP

D

CE

Q

CP

D

DETAIL A

DETAIL A X 7

CPAB

OEAB

A0

A1
A2

CPBA

OEBA

B0

A3
A4
A5
A6
A7

CEBA

B1
B2
B3
B4
B5
B6
B7

8

7
6
5
4
3
2
1

11

10

9

16

17
18

14

15

19
20
21
22
23

13

SA00117

RECOMMENDED OPERATING CONDITIONS

LIMITS

SYMBOL

PARAMETER

Min Max

UNIT

V

CC

DC supply voltage 4.5 5.5 V

V

I

Input voltage 0 V

CC

V

V

IH

High-level input voltage 2.0 V

V

IL

Low-level Input voltage 0.8 V

I

OH

High-level output current –32 mA

I

OL

Low-level output current 64 mA
∆t/∆v Input transition rise or fall rate 0 10 ns/V
T

amb

Operating free-air temperature range –40 +85 °C