74HCT21 PDF даташит
Спецификация 74HCT21 изготовлена «Philips» и имеет функцию, называемую «Dual 4-input AND gate». |
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Детали детали
Номер произв | 74HCT21 |
Описание | Dual 4-input AND gate |
Производители | Philips |
логотип |
6 Pages
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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/HCT21
Dual 4-input AND gate
Product specification
File under Integrated Circuits, IC06
December 1990
No Preview Available ! |
Philips Semiconductors
Dual 4-input AND gate
Product specification
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
SYMBOL PARAMETER
tPHL/ tPLH
CI
CPD
propagation delay nA, nB, nC, nD to nY
input capacitance
power dissipation capacitance per package
CONDITIONS
TYPICAL
HC HCT
CL = 15 pF; VCC = 5 V 10
3.5
12
3.5
notes 1 and 2
15 16
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
UNIT
ns
pF
pF
ORDERING INFORMATION
See “74HC/HCT/HCU/HCMOS Logic Package Information”.
December 1990
2
No Preview Available ! |
Philips Semiconductors
Dual 4-input AND gate
PIN DESCRIPTION
PIN NO.
1, 9
2, 10
3, 11
4, 12
5, 13
6, 8
7
14
SYMBOL
1A, 2A
1B, 2B
n.c.
1C, 2C
1D, 2D
1Y, 2Y
GND
VCC
NAME AND FUNCTION
data inputs
data inputs
not connected
data inputs
data inputs
data outputs
ground (0 V)
positive supply voltage
Product specification
74HC/HCT21
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
December 1990
3
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