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參數(shù)資料
| 型號： | M54HC21 |
| 廠商： | 意法半導體 |
| 英文描述： | DUAL 4-INPUT AND GATE |
| 中文描述： | 雙4輸入與門 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 232K |
| 代理商： | M54HC21 |
M54HC21
M74HC21
December1992
DUAL 4-INPUT AND GATE
B1R
(Plastic Package)
ORDER CODES :
M54HC21F1R
M74HC21B1R
M74HC21M1R
M74HC21C1R
F1R
(CeramicPackage)
M1R
(MicroPackage)
C1R
(Chip Carrier)
PIN CONNECTIONS
(top view)
NC =
No Internal
Connection
INPUT AND OUTPUT EQUIVALENT CIRCUIT
.
HIGH SPEED
t
PD
= 10 ns(TYP.) AT V
CC
= 5 V
.
LOWPOWER DISSIPATION
I
CC
= 1
μ
A(MAX.) AT T
A
= 25
°
C
.
HIGH NOISE IMMUNITY
V
NIH
= V
NIL
= 28% V
CC
(MIN.)
.
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
I
OH
= I
OL
= 4 mA (MIN.)
.
BALANCEDPROPAGATION DELAYS
t
PLH
= t
PHL
.
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO6 V
.
PIN ANDFUNCTION COMPATIBLE
WITH 54/74LS21
The M54/74HC21 is a highspeed CMOS DUAL 4-
INPUTANDGATEfabricated in silicongate C
2
MOS
technology. It has the same high speed perform-
anceofLSTTL combinedwithtrue CMOSlowpower
consumption.
The internal circuits is composed of3stages includ-
ingbufferedoutput,which giveshighnoiseimmunity
and a stable output.
All inputs are equipped with protection circuits
against static discharge and transient excess volt-
age.
DESCRIPTION
1/9
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