74LVX4245T データシートの表示（PDF） - STMicroelectronics

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74LVX4245T

OCTAL DUAL SUPPLY BUS TRANSCEIVER

STMicroelectronics 

®

74LVX4245

OCTAL DUAL SUPPLY BUS TRANSCEIVER

s HIGH SPEED: tPD = 6 ns (TYP.) at VCC = 3.3V

s LOW POWER DISSIPATION:

ICC = 8 µA (MAX.) at TA = 25 oC

s LOW NOISE: VOLP = 0.3V (TYP.) at VCC = 3.3V

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 4 mA (MIN)

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s OPERATING VOLTAGE RANGE:

VCCA (OPR) =4.5V to 5.5V (1.2V Data Retention)

s VCCB (OPR) = 2.7V to 3.6V (1.2VData

Retention)

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 4245

s IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The LVX4245 is a dual supply low voltage CMOS

OCTAL BUS TRANSCEIVER fabricated with

sub-micron silicon gate and double-layer metal

wiring C2MOS technology. Designed for use as

an interface between a 5V bus and a 3.3V bus in

mixed 5V/3.3V supply sistems, it achieves high

PRELIMINARY DATA

M

(Micro Package)

T

(TSSOP Package)

ORDER CODES :

74LVX424 5M

74LVX4245T

speed operation while maintaining the CMOS low

power dissipation.

This IC is intended for two-way asynchronous

communication between data buses; the direction

of data trasmission is determined by DIR input.

The enable input G can be used to disable the

device so that the buses are effectively isolated.

The A-port interfaces with the 5V bus, the B-port

with the 3.3V bus.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

PIN CONNECTION AND IEC LOGIC SYMBOLS

March 1999

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