74ALVT16952 datasheet(2/14 Pages) PHILIPS

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Philips Semiconductors

Product specification

74ALVT16952

2.5V/3.3V 16-bit registered transceiver (3-State)

1998 Mar 19

853-2053 19136

FEATURES

• Two 8-bit registered transceivers

• 5V I/O Compatible

• 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 74ALVT16952 is a high-performance BiCMOS product

designed for VCC operation at 2.5V or 3.3V with I/O compatibility up

to 5V.

The 74ALVT16952 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) is Low. The data is then present at the 3-State

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.

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

inputs at a valid logic level.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

SYMBOL

PARAMETER

Tamb = 25°C; GND = 0V

2.5V

3.3V

UNIT

tPLH

tPHL

Propagation delay

nCPBA to nAx or

nCPAB to nBx

CL = 50pF;

3.0

2.3

CIN

Input capacitance

VI = 0V or VCC

CI/O

I/O pin capacitance

VI/O = 0V or VCC

Outputs disabled

ICCZ

Total supply current

Outputs disabled

µA

ORDERING INFORMATION

PACKAGES

TEMPERATURE RANGE

OUTSIDE NORTH AMERICA

NORTH AMERICA

DWG NUMBER

56-Pin Plastic SSOP Type III

–40

°C to +85°C

74ALVT16952 DL

AV16952 DL

SOT371-1

56-Pin Plastic TSSOP Type II

–40

°C to +85°C

74ALVT16952 DGG

AV16952 DGG

SOT364-1

LOGIC SYMBOL (IEEE/IEC)

1, 4, 5

2, 3, 6

EN4

EN3

EN2

EN1

1, 4, 5

2, 3, 6

EN4

EN3

EN2

EN1

SH00069

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