74HC190 데이터 시트보기 (PDF) - Philips Electronics

부품명

상세내역

제조사

74HC190

Presettable synchronous BCD decade up/down counter

Philips Electronics 

Philips Semiconductors

Presettable synchronous BCD decade

up/down counter

Product specification

74HC/HCT190

QUICK REFERENCE DATA

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

SYMBOL

PARAMETER

CONDITIONS

tPHL/ tPLH

fmax

CI

CPD

propagation delay CP to Qn

maximum clock frequency

input capacitance

power dissipation capacitance per flip-flop

CL = 15 pF; VCC = 5 V

notes 1 and 2

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 × 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

TYPICAL

HC

22

28

3.5

36

HCT

24

30

3.5

38

UNIT

ns

MHz

pF

pF

ORDERING INFORMATION

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

December 1990

3

Share Link: