Philips 74abt h162245a DATASHEETS

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74ABT162245A
74ABTH162245A

16-Bit bus transceiver with 30Ω series
termination resistors (3-State)

Product specification
Supersedes data of 1996 Nov 20
IC23 Data Handbook

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1998 Feb 25

Philips Semiconductors Product specification

Quiescent su ly current

16-bit bus transceiver with 30Ω series
termination resistors (3-State)

FEA TURES

•16-bit bidirectional bus interface

•Power-up 3-State

•Multiple V

•3-State buffers

•Output capability: +12mA/–32mA

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

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

and 200V per Machine Model

•Same part as 74ABT16245A-1

•74ABTH162245A incorporates bus hold data inputs which

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

•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
nAx to nBx or nBx to nAx

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

pp

CL = 50pF; VCC = 5V

Outputs disabled; VCC = 5.5V 300 nA
Outputs Low; VCC = 5.5V 10 mA

74ABT162245A

74ABTH162245A

DESCRIPTION

The 74ABT162245A high-performance BiCMOS device combines
low static and dynamic power dissipation with high speed.

The 74ABT162245A device is a 16-bit transceiver featuring
non-inverting 3-State bus compatible outputs in both send and
receive directions. The control function implementation minimizes
external timing requirements. The device features two Output
Enable (1OE
(1DIR, 2DIR) inputs for direction control.

The 74ABT162245A is designed with 30 ohm series resistance in
both the upper and lower output structures on both A and B ports.
This design reduces line noise in applications such as memory
address drivers, clock drivers, and bus receiver/transmitters.

The 74ABT162245A is the same as the 74ABT16245A-1. The part
number has been changed to reflect industry standards

Two options are available, 74ABT162245A which does not have the
bus hold feature and the 74ABTH162245A which incorporates the
bus hold feature.

CONDITIONS

T

= 25°C; GND = 0V

amb

CC

, 2OE) inputs for easy cascading and two Direction

TYPICAL UNIT

2.0

3.0
3 pF

ns

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER

48-Pin Plastic SSOP Type III –40°C to +85°C 74ABT162245A DL BT162245A DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ABT162245A DGG BT162245A DGG SOT362-1
48-Pin Plastic SSOP Type III –40°C to +85°C 74ABTH162245A DL BH162245A DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ABTH162245A DGG BH162245A DGG SOT362-1

1998 Feb 25 853-1772 19018

2

Philips Semiconductors Product specification

16-bit bus transceiver with 30Ω series
termination resistors (3-State)

PIN CONFIGURATION

1

1DIR

2

1B0

3

1B1

GND

4
5

1B2

6

1B3

7

V

CC

8

1B4
1B5

9

GND

10

1B6

11

1B7

12

2B0

13

2B1

14

GND

15
16

2B2
2B3

17
18

V

CC

2B4

19
20

2B5

21

GND

22

2B6

23

2B7

24

2DIR

PIN DESCRIPTION

SYMBOL PIN NUMBER NAME AND FUNCTION

1DIR, 2DIR 1, 24

47, 46, 44, 43
1A0 – 1A7,
2A0 – 2A7

1B0 – 1B7
2B0 – 2B7

1OE, 2OE 48, 25 Output enables

GND

V

CC

41, 40, 38, 37

36, 35, 33, 32

30, 29, 27, 26

2, 3, 5, 6

8, 9, 11, 12
13, 14, 16, 17
19, 20, 22, 23

4, 10, 15, 21

28, 34, 39, 45

7, 18, 31, 42 Positive supply voltage

48

1OE

47

1A0

46

1A1
GND

45
44

1A2

43

1A3

42

V

CC

41

1A4
1A5

40

GND

39

1A6

38

1A7

37

2A0

36

2A1

35

GND

34
33

2A2
2A3

32
31

V

CC

2A4

30
29

2A5

28

GND

27

2A6

26

2A7

25

2OE

SA00020

Direction control inputs
(Active-High)

Data inputs/outputs (A side)

Data inputs/outputs (B side)

Ground (0V)

74ABT162245A

74ABTH162245A

LOGIC SYMBOL

1

1DIR

48

1OE

47

1A0

46

1A1

44

1A2

43

1A3

41

1A4

40

1A5

38

1A6

37 12

1A7

2

1B0

3

1B1

5

1B2

6

1B3

8

1B4

9

1B5

11

1B6

1B7

FUNCTION TABLE

INPUTS INPUTS/OUTPUTS

nOE nDIR nAx nBx

L L A = B Inputs
L H Inputs B = A

H X Z Z

H = HIGH voltage level
L = LOW voltage level
X = D0n’t care
Z = High impedance “off” state

24

2DIR

36

2A0

35

2A1

33

2A2

32

2A3

30

2A4

29

2A5

27

2A6

26 23

2A7

25

2OE

13

2B0

14

2B1

16

2B2

17

2B3

19

2B4

20

2B5

22

2B6

2B7

SA00021

1998 Feb 25

3

Philips Semiconductors Product specification

16-bit bus transceiver with 30Ω series
termination resistors (3-State)

LOGIC SYMBOL (IEEE/IEC)

48

1

25
24

47

46
44 5

43 6
41 8
40 9
38 11
37 12

36

35
33 16
32 17
30 19
29 20
27 22
26 23

G3
3 EN1 (BA)

3 EN2 (AB)

G6
6 EN4 (BA)

6 EN5 (AB)

∇ 1

∇ 4

2

2 ∇

3

13

5 ∇

14

SA00022

74ABT162245A

74ABTH162245A

SCHEMATIC OF EACH OUTPUT

V

CC

GND

27Ω

OUTPUT

27Ω

SA00042

1998 Feb 25

4