74VHC14 datasheet(1/15 Pages) STMICROELECTRONICS

Il numero della parte	74VHC14

Spiegazioni elettronici	HEX SCHMITT inverter

PDF	15 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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1 / 15 page

May 2007

Rev 7

1/15

15

74VHC14

HEX SCHMITT inverter

Features

■ High speed: tPD = 5.5ns (typ.) at VCC = 5V

■ Low power dissipation:

ICC = 2 µA (Max.) at TA = 25°C

■ Typical hysteresis: Vh = 1V at VCC = 4.5V

■ Power down protection on inputs

■ Symmetrical output impedance:

|IOH| = IOL = 8 mA (Min)

■ Balanced propagation delays:

tPLH ≅ tPHL

■ Operating voltage range:

■ VCC(Opr) = 2V to 5.5V

■ Pin and function compatible with

74 series 14

■ Improved latch-up immunity

■ Low noise: VOLP = 0.8V (Max.)

Description

The 74VHC14 is an advanced high-speed CMOS

HEX SCHMITT inverter fabricated with sub-

micron silicon gate and double-layer metal wiring

C2MOS technology.

The internal circuit is composed of 3 stages

including buffer output, which enables high noise

immunity and stable output.

Power down protection is provided on all inputs

and 0 to 7V can be accepted on inputs with no

regard to the supply voltage. This device can be

used to interface 5V to 3V.

Pin configuration and function are the same as

those of the 74VHC04 but the 74VHC14 has

hysteresis.

This together with its schmitt trigger function

allows it to be used on line receivers with slow

rise/fall input signals.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

SO-14

TSSOP14

www.st.com

Table 1. Device summary

Part number

Package

Packaging

74VHC14MTR

SO-14

Tape and reel

74VHC14TTR

TSSOP14

Tape and reel

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