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74HCT21 Arkusz danych(PDF) 2 Page - NXP Semiconductors

Numer części 74HCT21
Szczegółowy opis  Dual 4-input AND gate
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Producent  PHILIPS [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HCT21 Arkusz danych(HTML) 2 Page - NXP Semiconductors

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December 1990
2
Philips Semiconductors
Product specification
Dual 4-input AND gate
74HC/HCT21
FEATURES
• Output capability: standard
• ICC category: SSI
GENERAL DESCRIPTION
The 74HC/HCT21 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/HCT21 provide the 4-input AND function.
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
HC
HCT
tPHL/ tPLH
propagation delay nA, nB, nC, nD to nY
CL = 15 pF; VCC = 5 V 10
12
ns
CI
input capacitance
3.5
3.5
pF
CPD
power dissipation capacitance per package
notes 1 and 2
15
16
pF


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