74LVXC164245MTD datasheet(1/4 Pages) NSC

Nome de Peças	74LVXC164245MTD

Descrição Electrónicos	16-Bit Dual Supply Configurable Voltage Interface Transceiver with TRI-STATE-R Outputs

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Fabricante Electrônico	NSC [National Semiconductor (TI)]

Página de início	http://www.national.com

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TLF12535

ADVANCE INFORMATION

March 1996

74LVXC164245

16-Bit Dual Supply Configurable Voltage

Interface Transceiver with TRI-STATE

Outputs

General Description

The LVXC164245 is a 48-pin dual-supply 16-bit configura-

ble voltage interface transceiver suited for PCMCIA and oth-

er real time configurable IO applications The VCCB pin ac-

cepts a 5V supply level The ‘‘B’’ port is a dedicated 5V port

The VCCA pin accepts a 3V-to-5V supply level The ‘‘A’’ port

is configured to track the VCCA supply level respectively A

5V level on the VCC pin will configure the IO pins at a 5V

level and a 3V VCC will configure the IO pins at a 3V level

This device will allow the VCCA voltage source pin and IO

pins on the ‘‘A’’ port to float when OE is HIGH This feature

is necessary to buffer data to and from a PCMCIA socket

that permits PCMCIA cards to be inserted and removed dur-

ing normal operation

Features

Y

Power updown high impedance provides glitch-free

bus loading

Y

Allows A port and VCCA to float simultaneously when

OE is HIGH

Y

Bidirectional interface between 5V and 3V-to-5V buses

Y

Inputs compatible with TTL level

Y

Allow dual VCC supplies power updown easily when

OE is HIGH

Y

Guaranteed simultaneous switching noise level and dy-

namic threshold performance

Y

Available in SSOP and TSSOP packages

Y

Implements patented Quiet SeriesTM EMI reduction

circuitry

Y

Flexible VCCA operating range

Y

Functionally compatible with the 74 series 16245

Logic Symbol

TLF12535 – 1

Pin Names

Description

OEn

Output Enable Input (Active Low)

TRn

TransmitReceive Input

A0–A15

Side A InputsTRI-STATE Outputs

B0–B15

Side B InputsTRI-STATE Outputs

SSOP

TSSOP JEDEC

Order Number

74LVXC164245MEA

74LVXC164245MTD

74LVXC164245MEAX

74LVXC164245MTDX

See NS Package

MS48A

MTD48

Number

Connection Diagram

Pin Assignment for

SSOP and TSSOP

TLF12535 – 2

C1996 National Semiconductor Corporation

RRD-B30M17Printed in U S A

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