74LVX4245MTR datasheet(1/13 Pages) STMICROELECTRONICS

Numer części	74LVX4245MTR

Szczegółowy opis	OCTAL DUAL SUPPLY BUS TRANSCEIVER

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August 2004

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HIGH SPEED:

tPD = 8.5 ns (MAX.) at

VCCA=5.0V VCCB = 3.3V

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LOW POWER DISSIPATION:

ICCA = ICCB =5µA(MAX.) at TA=25°C

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

VCCA=5.5V VCCB=3.3V

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SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24mA (MIN)

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BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

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OPERATING VOLTAGE RANGE:

VCCA(OPR)= 4.5Vto 5.5V(1.2VData Retention)

VCCB(OPR)= 2.7Vto 3.6V(1.2VData Retention)

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 4245

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IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74LVX4245 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 a mixed 5V/3.3V supply systems, it achieves

high speed operation while maintaining the CMOS

low power dissipation.

This IC is intended for two-way asynchronous

communication between data buses and the

direction of data transmission 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 are equipped with protection circuits

against static discharge, giving them 2KV ESD

immunity and transient excess voltage.

74LVX4245

OCTAL DUAL SUPPLY BUS TRANSCEIVER

Figure 1: Pin Connection And IEC Logic Symbols

Table 1: Order Codes

PACKAGE

T & R

SOP

74LVX4245MTR

TSSOP

74LVX4245TTR

TSSOP

SOP

Rev. 6

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