74HC14 datasheet(2/8 Pages) PHILIPS

2 / 8 page

September 1993

Philips Semiconductors

Product speciﬁcation

Hex inverting Schmitt trigger

74HC/HCT14

FEATURES

• Output capability: standard

• ICC category: SSI

GENERAL DESCRIPTION

The 74HC/HCT14 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL).

They are specified in compliance with JEDEC standard no. 7A.

The 74HC/HCT14 provide six inverting buffers with Schmitt-trigger action. They are capable of transforming slowly

changing input signals into sharply defined, jitter-free output signals.

QUICK REFERENCE DATA

GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns

Notes

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

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

fi = input frequency in MHz

fo = output frequency in MHz

CL = output load capacitance in pF

VCC = supply voltage in V

∑ (CL × VCC2 × fo) = sum of outputs

2. For HC the condition is VI = GND to VCC

For HCT the condition is VI = GND to VCC − 1.5 V

ORDERING INFORMATION

See

“74HC/HCT/HCU/HCMOS Logic Package Information”.

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

HCT

tPHL/ tPLH

propagation delay nA to nY

CL = 15 pF; VCC = 5 V

input capacitance

3.5

CPD

power dissipation capacitance per gate

notes 1 and 2

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