74LVC2G34 datasheet(2/13 Pages) PHILIPS

2 / 13 page

2004 Sep 10

Philips Semiconductors

Product speciﬁcation

Dual buffer gate

74LVC2G34

FEATURES

• Wide supply voltage range from 1.65 V to 5.5 V

• 5 V tolerant input/output for interfacing with 5 V logic

• High noise immunity

• Complies with JEDEC standard:

– JESD8-7 (1.65 V to 1.95 V)

– JESD8-5 (2.3 V to 2.7 V)

– JESD8B/JESD36 (2.7 V to 3.6 V).

• ESD protection:

– HBM EIA/JESD22-A114-B exceeds 2000 V

– MM EIA/JESD22-A115-A exceeds 200 V.

•±24 mA output drive (VCC = 3.0 V)

• CMOS low power consumption

• Latch-up performance exceeds 250 mA

• Direct interface with TTL levels

• Multiple package options

• Specified from −40 °C to +85 °C and

−40 °C to +125 °C.

DESCRIPTION

The 74LVC2G34 is a high-performance, low-power,

low-voltage, Si-gate CMOS device and superior to most

advanced CMOS compatible TTL families.

Inputs can be driven from either 3.3 V or 5 V devices.

These feature allows the use of these devices as

translators in a mixed 3.3 V and 5 V environment.

This device is fully specified for partial power-down

applications using Ioff. The Ioff circuitry disables the output,

preventing the damaging backflow current through the

device when it is powered down.

The 74LVC2G34 provides two buffers.

QUICK REFERENCE DATA

GND = 0 V; Tamb =25 °C.

Notes

1. CPD is used to determine the dynamic power dissipation (PD in µW).

PD =CPD × VCC2 × fi × N+ ∑(CL × VCC2 × fo) where:

fi = input frequency in MHz;

fo = output frequency in MHz;

CL = output load capacitance in pF;

VCC = supply voltage in Volts;

N = total load switching outputs;

∑(CL × VCC2 × fo) = sum of outputs.

2. The condition is VI = GND to VCC.

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

tPHL/tPLH

propagation delay input nA to output nY

VCC = 1.8 V; CL = 30 pF; RL =1kΩ

3.8

VCC = 2.5 V; CL = 30 pF; RL = 500 Ω

2.4

VCC = 2.7 V; CL = 50 pF; RL = 500 Ω

2.5

VCC = 3.3 V; CL = 50 pF; RL = 500 Ω

2.2

VCC = 5.0 V; CL = 50 pF; RL = 500 Ω

1.9

input capacitance

2.5

CPD

power dissipation capacitance

VCC = 3.3 V; notes 1 and 2

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