74LCX652TTR datasheet(1/16 Pages) STMICROELECTRONICS

Teilenummer	74LCX652TTR

Bauteilbeschribung	LOW VOLT. CMOS OCTAL BUS TRANSCEIVER/REGISTER WITH 5 VOLT TOLERANT INPUTS AND OUTPUTS(3-STATE)

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September 2004

s

5V TOLERANT INPUTS AND OUTPUTS

s

HIGH SPEED:

tPD = 7.0 ns (MAX.) at VCC = 3V

s

POWER DOWN PROTECTION ON INPUTS

AND OUTPUTS

s

SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24mA (MIN) at VCC = 3V

s

PCI BUS LEVELS GUARANTEED AT 24 mA

s

BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s

OPERATING VOLTAGE RANGE:

VCC(OPR) = 2.0V to 3.6V (1.5V Data

Retention)

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 652

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LATCH-UP PERFORMANCE EXCEEDS

500mA (JESD 17)

s

ESD PERFORMANCE:

HBM > 2000V (MIL STD 883 method 3015);

MM > 200V

DESCRIPTION

The 74LCX652 is a low voltage CMOS OCTAL

BUS

TRANSCEIVER

AND

REGISTER

(3-STATE) fabricated with sub-micron silicon gate

and double-layer metal wiring C2MOS technology.

It is ideal for low power and high speed 3.3V

applications; it can be interfaced to 5V signal

environment for both inputs and outputs.

This device consists of bus transceiver circuits

with 3 state, D-type flip-flops, and control circuitry

arranged for multiplexed transmission of data

directly from the input bus or from the internal

storage registers. Enable (GAB) and (GBA) pins

are provided to control the transceiver functions.

Select AB and Select BA control pins are provided

to select whether real-time or stored data is

transferred. A low input level selects real-time,

and a high selects stored data.

Data on the A or B bus, or both, can be stored in

the internal D flip-flop by low to high transitions at

the

appropriate

clock

pins

(CAB

or

CBA)

regardless of the select or enable control pins.

When select AB and select BA are in the real-time

transfer mode, it is also possible to store data

74LCX652

LOW VOLT. CMOS OCTAL BUS TRANSCEIVER/REGISTER

WITH 5 VOLT TOLERANT INPUTS AND OUTPUTS(3-STATE)

Figure 1: Pin Connection And IEC Logic Symbols

Table 1: Order Codes

PACKAGE

T & R

SOP

74LCX652RM13TR

TSSOP

74LCX652TTR

TSSOP

SOP

Rev. 6

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