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May 2005

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LOW POWER DISSIPATION:

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SYMMETRICAL OUTPUT IMPEDANCE:

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BALANCED PROPAGATION DELAYS:

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POWER DOWN PROTECTION ON INPUTS

AND OUTPUTS

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26

ΩSERIESRESISTOR ON ASIDEOUTPUTS

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OPERATING VOLTAGE RANGE:

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MAX DATA RATES:

380 Mbps (1.8V to 3.3V translation)

260 Mbps (<1.8V to 3.3V translation)

260 Mbps (Translate to 2.5V)

210 Mbps (Translate to 1.5V)

100 Mbps (Translate to 1.2V)

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LATCH-UP PERFORMANCE EXCEEDS

500mA (JESD 17)

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ESD PERFORMANCE:

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

MM > 200V

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DESCRIPTION

The ST4G3234 is a dual supply low voltage

CMOS 4-BIT BUS BUFFER level translator

fabricated

with

sub-micron silicon gate and

five-layer

metal

wiring

technology.

Designed for use as an interface between a 3.3V

bus and a 2.5V or 1.8V bus in a mixed 3.3V/1.8V,

3.3V/2.5V,

1.8V/1.4V

and

2.5V/1.8V

supply

systems, it achieves high speed operation while

maintaining the CMOS low power dissipation.

This IC is intended for one-way asynchronous

communication between data buses. The input

and output power down protections disable the

device when both power supply are down, so that

the buses are effectively isolated.

All inputs are equipped with protection circuits

against static discharge, giving them ESD immuni-

ty and transient excess voltage.

ST4G3234

4-BIT DUAL SUPPLY BUS BUFFER LEVEL TRANSLATOR

WITH A SIDE SERIES RESISTOR

Table 1: Order Codes

PACKAGE

T & R

Comments

FLIPCHIP11

ST4G3234BJR

5000 parts per reel

FLIPCHIP

Figure 1: Logic Diagram

Rev. 7