74ALVT166646DL datasheet(2/15 Pages) PHILIPS

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Philips Semiconductors

Product specification

74ALVT16646

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

1998 Feb 13

853-1856 18962

FEATURES

• 16-bit universal bus interface

• 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

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

• Power-up reset

• Power-up 3-State

• 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 74ALVT16646 is a high-performance BiCMOS product

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

to 5V.

This device is a 16-bit transceiver featuring non-inverting 3-State

bus compatible outputs in both send and receive directions. The

control function implementation minimizes external timing

requirements. The device features an Output Enable (OE) input for

easy cascading and a Direction (DIR) input for direction control.

Data on the A or B bus is clocked into the registers on the Low to

High transition of the appropriate clock (CPAB or CPBA). The

select-control (SAB and SBA) inputs can multiplex stored and

real-time (transparent mode data).

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

SYMBOL

PARAMETER

Tamb = 25°C

2.5V

3.3V

UNIT

tPLH

tPHL

Propagation delay

nAx to nBx or nBx to nAx

CL = 50pF

2.2

2.3

1.7

1.8

CIN

Input capacitance DIR, OE

VI = 0V or VCC

CI/O

I/O 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

74ALVT166646 DL

AV16646 DL

SOT371-1

56-Pin Plastic TSSOP Type II

–40

°C to +85°C

74ALVT16646 DGG

AV16646 DGG

SOT364-1

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