74ABT657_3

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2010. All rights reserved.

Product data sheet

Rev. 03 — 15 March 2010

2 of 17

NXP Semiconductors

74ABT657

Octal transceiver with parity generator/checker; 3-state

3.

Ordering information

4.

Functional diagram

Table 1.

Ordering information

Type number

Package

Temperature range

Name

Description

Version

74ABT657D

−40 °C to +85 °C

SO24

plastic small outline package; 24 leads; body width 7.5 mm SOT137-1

74ABT657DB

−40 °C to +85 °C

SSOP24

plastic shrink small outline package; 24 leads; body width

5.3 mm

SOT340-1

74ABT657PW

−40 °C to +85 °C

TSSOP24 plastic thin shrink small outline package; 24 leads; body

width 4.4 mm

SOT355-1

Fig 1.

Logic symbol

001aae826

A0

2

23

11

24

1

B0

A1

B1

A2

B2

A3

B3

A4

B4

A5

B5

A6

B6

A7

B7

T/R

OE

PARITY

ERROR

ODD/EVEN

3

22

4

21

5

20

6

17

8

16

9

15

10

13

12

14

Fig 2.

IEC logic symbol

001aae827

223

=

1,3[EVEN]

1,4[ODD]

0,3[EVEN

0,4]ODD

2K

G3[EVEN]

G4[ODD]

1

0

0

2

M

0 BUS B TO A

1 BUS A TO B

2 HIGH Z

322

421

520

617

816

915

10

14

2

0

11

24

1

12

13