74ALVT16841 datasheet(2/14 Pages) PHILIPS

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Philips Semiconductors

Product specification

74ALVT16841

2.5V/3.3V 20-bit bus interface latch (3-State)

1998 Feb 13

853-1868 18961

FEATURES

• High speed parallel latches

• 5V I/O Compatible

• Live insertion/extraction permitted

• Extra data width for wide address/data paths or buses carrying

parity

• Power-up 3-State

• Power-up reset

• Ideal where high speed, light loading, or increased fan-in are

required with MOS microprocessors

• Output capability: +64mA/–32mA

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

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

resistors to hold unused inputs

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

and 200V per Machine Model

DESCRIPTION

The 74ALVT16841 Bus interface latch is designed to provide extra

data width for wider data/address paths of buses carrying parity. It is

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

5V.

The 74ALVT16841 consists of two sets of ten D-type latches with

3-State outputs. The flip-flops appear transparent to the data when

Latch Enable (nLE) is High. This allows asynchronous operation, as

the output transition follows the data in transition. On the nLE

High-to-Low transition, the data that meets the setup and hold time

is latched.

Data appears on the bus when the Output Enable (nOE) is Low.

When nOE is High the output is in the High-impedance state.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

SYMBOL

PARAMETER

Tamb = 25°C

2.5V

3.3V

UNIT

tPLH

tPHL

Propagation delay

nDx to nQx

CL = 50pF

1.8

2.1

1.5

1.7

CIN

Input capacitance DIR, OE

VI = 0V or VCC

COut

Output pin capacitance

VI/O = 0V or VCC

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

74ALVT16841 DL

AV16841 DL

SOT371-1

56-Pin Plastic TSSOP Type II

–40

°C to +85°C

74ALVT16841 DGG

AV16841 DGG

SOT364-1

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