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74F543

Octal latched transceiver with dual enable; 3-state

NXP Semiconductors. 

74F543

Octal latched transceiver with dual enable; 3-state

Rev. 04 — 26 January 2010

Product data sheet

1. General description

The 74F543 octal latched transceiver contains two sets of D-type latches for temporary

storage of data flowing in either direction. Separate latch enable (LEAB, LEBA) and output

enable (OEAB, OEBA) inputs are provided for each register to permit independent control

of data transfer in either direction. The A outputs are guaranteed to sink 24 mA while the B

outputs are rated for 64 mA.

2. Features

I Combines 74F245 and 74F373 type functions in one device

I 8-bit octal transceiver with D-type latch

I Back-to-back registers for storage

I Separate controls for data flow in each direction

I A output capability: +20 mA to −3 mA

I B output capability: +64 mA to −15 mA

I 3-state outputs for bus-oriented applications

3. Ordering information

Table 1. Ordering information

Type number Package

Temperature range Name

N74F543D

0 °C to +70 °C

SO24

N74F543DB

0 °C to +70 °C

SSOP24

Description

plastic small outline package; 24 leads;

body width 7.5 mm

plastic shrink small outline package; 24 leads;

body width 5.3 mm

Version

SOT137-1

SOT340-1

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