VT16543ADGG datasheet(2/12 Pages) PHILIPS

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Philips Semiconductors

Product specification

74LVT16543A

3.3V 16-bit registered transceiver (3-State)

1998 Feb 19

853–1764 18986

FEATURES

• 16-bit universal bus interface

• 3-State buffers

• Output capability: +64mA/-32mA

• TTL input and output switching levels

• Input and output interface capability to systems at 5V supply

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

resistors to hold unused inputs

• Live insertion/extraction permitted

• Power-up 3-State

• Power-up reset

• No bus current loading when output is tied to 5V bus

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

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

and 200V per Machine Model

DESCRIPTION

The 74LVT16543A is a high-performance BiCMOS product

designed for VCC operation at 3.3V. The device can be used as two

8-bit transceivers or one 16-bit transceiver.

The 74LVT16543A contains two sets of eight D-type latches, with

separate control pins for each set. Using data flow from A to B as an

example, when the A-to-B Enable (nEAB) input and the A-to-B Latch

Enable (nLEAB) input are Low, the A-to-B path is transparent.

A subsequent Low-to-High transition of the nLEAB signal puts the A

data into the latches where it is stored and the B outputs no longer

change with the A inputs. With nEAB and nOEAB both Low, the

3-State B output buffers are active and display the data present at

the outputs of the A latches.

Control of data flow from B to A is similar, but using the nEBA,

nLEBA, and nOEBA inputs.

Active bus-hold circuitry is provided to hold unused or floating data

inputs at a valid logic level.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

Tamb = 25°C; GND = 0V

TYPICAL

UNIT

tPLH

tPHL

Propagation delay

nAx to nBx or nBx to nAx

CL = 50pF;

VCC = 3.3V

2.2

CIN

Input capacitance control pins

VI = 0V or 3.0V

CI/O

I/O pin capacitance

Outputs disabled; VI/O = 0V or 3.0V

ICCZ

Total supply current

Outputs disabled; VCC = 3.6V

µA

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

OUTSIDE NORTH AMERICA

NORTH AMERICA

DWG NUMBER

56-Pin Plastic SSOP Type III

–40

°C to +85°C

74LVT16543A DL

VT16543A DL

SOT371-1

56-Pin Plastic TSSOP Type II

–40

°C to +85°C

74LVT16543A DGG

VT16543A DGG

SOT364-1

LOGIC SYMBOL (IEEE/IEC)

∇ 9

11 D

5 D

∇ 3

1EN3 (BA)

1C5

2EN4 (AB)

2C6

6 D

∇

7EN9 (BA)

7C11

8EN10 (AB)

8C12

12 D

∇

SW00151

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