Philips 74HCT27U, 74HCT27PW, 74HCT27NB, 74HCT27N, 74HCT27DB Datasheet

INTEGRATED CIRCUITS

DATA SHEET

For a complete data sheet, please also download:

∙The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications

∙The IC06 74HC/HCT/HCU/HCMOS Logic Package Information

∙The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines

74HC/HCT27

Triple 3-input NOR gate

Product specification			December 1990
File under Integrated Circuits, IC06

Philips Semiconductors	Product specification
Triple 3-input NOR gate	74HC/HCT27

FEATURES

·Output capability: standard

·ICC category: SSI

QUICK REFERENCE DATA

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

GENERAL DESCRIPTION

The 74HC/HCT27 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/HCT27 provide the 3-input NOR function.

	SYMBOL	PARAMETER	CONDITIONS	TYPICAL		UNIT
				HC	HCT
	tPHL/ tPLH	propagation delay nA, nB, nC to nY	CL = 15 pF; VCC = 5 V	8	10	ns
	CI	input capacitance		3.5	3.5	pF
	CPD	power dissipation capacitance per gate	notes 1 and 2	24	30	pF

Notes

1. CPD is used to determine the dynamic power dissipation (PD in mW): PD = CPD ´ VCC2 ´ fi + å (CL ´ VCC2 ´ fO) where:

fi = input frequency in MHz fo = output frequency in MHz

å (CL ´ VCC2 ´ fo) = sum of outputs CL = output load capacitance in pF VCC = supply voltage in V

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”.

December 1990

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