Philips 74ABT16952 Technical data

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74ABT16952
74ABTH16952

16-bit registered transceiver (3-State)

Product specification
Supersedes data of 1995 Sep 28
IC23 Data Handbook

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1998 Feb 25

Philips Semiconductors Product specification

Quiescent su ly current

16-bit registered transceiver (3-State)

FEA TURES

•Two 8-bit registered transceivers

•Live insertion/extraction permitted

•Power-up 3-State

•74ABTH16952 incorporates bus-hold data inputs which eliminate

the need for external pull-up resistors to hold unused inputs

•Power-up reset

•Multiple V

•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

•Bus-hold data inputs eliminate the need for external pull-up

resistors to hold unused inputs

QUICK REFERENCE DATA

SYMBOL PARAMETER

and GND pins minimize switching noise

CC

t

PLH

t

PHL

C
C
I

CCZ

I

CCL

IN

I/O

Propagation delay
nCPBA to nAx or
nCPAB to nBx

Input capacitance VI = 0V or V
I/O capacitance VO = 0V or VCC; 3-State 7 pF

pp

CL = 50pF; VCC = 5V

Outputs disabled; VCC = 5.5V 500 µA
Outputs LOW; VCC = 5.5V 8 mA

74ABT16952

74ABTH16952

DESCRIPTION

The 74ABT16952 high-performance BiCMOS device combines low
static and dynamic power dissipation with high speed and high
output drive.

The 74ABT16952 is a dual octal registered transceiver. Two 8-bit
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 (nCPXX) provided that the Clock
Enable (nCEXX
output buffers, but is only accessible when the Output Enable
(nOEXX) is Low. Data flow from A inputs to B outputs is the same as
for B inputs to A outputs.

Two options are available, 74ABT16952 which does not have the
bus-hold feature and 74ABTH16952 which incorporates the
bus-hold feature.

CONDITIONS

T

= 25°C; GND = 0V

amb

CC

) is Low. The data is then present at the 3-State

TYPICAL UNIT

2.8

2.3
4 pF

ns

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER

56-Pin Plastic SSOP Type III –40°C to +85°C 74ABT16952 DL BT16952 DL SOT371-1
56-Pin Plastic TSSOP Type II –40°C to +85°C 74ABT16952 DGG BT16952 DGG SOT364-1
56-Pin Plastic SSOP Type III –40°C to +85°C 74ABTH16952 DL BH16952 DL SOT371-1
56-Pin Plastic TSSOP Type II –40°C to +85°C 74ABTH16952 DGG BH16952 DGG SOT364-1

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

2, 55

18, 22

3, 54,

26, 31

52, 51, 49, 48, 47, 45, 44, 43
42, 41, 40, 38, 37, 36, 34, 33

1, 56
8, 29

4, 11, 18, 25, 32, 39, 45, 53

4, 17, 30, 43 GND Ground (0V)
7, 22, 35, 50 V

1CPAB / 1CPBA
2CPAB / 2CPBA

1CEAB / 1CEBA
2CEAB / 2CEBA

1A0 – 1A7
2A0 – 2A7

1B0 – 1B7
2B0 – 2B7

1OEAB / 1OEBA
2OEAB / 2OEBA

CC

Clock input A to B / Clock input B to A

Clock enable input A to B / Clock enable input B to A

Data inputs/outputs (A side)

Data inputs/outputs (B side)

Output enable inputs

Positive supply voltage

1998 Feb 25 853-1814 19018

2

Philips Semiconductors Product specification

16-bit registered transceiver (3-State)

PIN CONFIGURATION

1OEAB

1CPAB
1CEAB

GND

1A0
1A1

V

CC

1A2
1A3

1A4

GND

1A5
1A6
1A7
2A0

2A1
2A2

GND

2A3
2A4
2A5

V

CC

2A6
2A7

GND
2CEAB
2CPAB

2OEAB

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

SH00070

56

1OEBA

55

1CPBA
1CEBA

54

GND

53

1B0

52

1B1

51
50

V

CC

49

1B2
1B3

48

1B4

47

GND

46

1B5

45

1B6

44

1B7

43

2B0

42
41

2B1
2B2

40

GND

39

2B3

38
37

2B4

36

2B5

35

V

CC

34

2B6

33

2B7

32

GND

31

2CEBA

30

2CPBA

29

2OEBA

LOGIC SYMBOL

568910121314

1A0 1A1 1A2 1A3 1A4 1A5 1A6 1A7

2

1CPAB

3

1CEAB

55

1CPBA

54

1CEBA

1B0 1B1 1B2 1B3 1B4 1B5 1B6 1B7

52 51 49 48 47 45 44 43

15 16 17 19 20 21 23 24

2A0 2A1 2A2 2A3 2A4 2A5 2A6 2A7

27

2CPAB

26

2CEAB

30

2CPBA

31

2CEBA

2B0 2B1 2B2 2B3 2B4 2B5 2B6 2B7

42 41 40 38 37 36 34 33

74ABT16952

74ABTH16952

561OEBA

11OEAB

292OEBA
282OEAB

SH00071

1998 Feb 25

3

Philips Semiconductors Product specification

16-bit registered transceiver (3-State)

LOGIC SYMBOL (IEEE/IEC)

1OEBA
1CEBA

1LPBA

1OEAB

1LEAB

1CPAB
2OEBA

2CEBA
2CPBA
2OEAB

2LEAB

2CPAB

1A0

1A1
1A2
1A3
1A4
1A5
1A6
1A7
2A0

2A1
2A2
2A3

2A4
2A5
2A6
2A7

56
54

55
1

3
2

29
31

30
28

26
27

5

6
8
9
10
12
13
14
15

16
17
19

20
21
23

24

1EN3
G1

1C5
EN4

G2
2C6

EN9
G7

7C11
EN10

G8
8C12

∇3
6D 4 ∇

∇911D
12D

5D

10 ∇

52

1B0

51

1B1

49

1B2

48

1B3

47

1B4

45

1B5

44

1B6

43

1B7

42

2B0

41

2B1

40

2B2

38

2B3

37

2B4

36

2B5

34

2B6

33

2B7

74ABT16952

74ABTH16952

FUNCTION TABLE for Register nAx or nBx

INPUTS INTERNAL OPERATING

nAx or

nBx

X X H NC Hold data
L

H

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 nAx or nBx OPERATING

nOEXX Q OUTPUTS MODE

H X Z Disable outputs

L
L

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

nCPXX nCEXX Q MODE

↑
↑

L
L

L

H

L

H

L

H

Load data

Enable outputs

1998 Feb 25

SH00086

4