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參數(shù)資料
| 型號(hào)： | 74HC27 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Triple 3-input NOR gate |
| 中文描述： | 三3輸入或非門 |
| 文件頁數(shù)： | 5/5頁 |
| 文件大?。?/td> | 32K |
| 代理商： | 74HC27 |
December 1990
5
Philips Semiconductors
Product specification
Triple 3-input NOR gate
74HC/HCT27
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
I
CC
category: SSI
Note to HCT types
The value of additional quiescent supply current (
I
CC
) for a unit load of 1 is given in the family specifications.
To determine
I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
AC WAVEFORMS
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
INPUT
UNIT LOAD COEFFICIENT
nA, nB, nC
1.50
SYMBOL
PARAMETER
T
amb
(
°
C)
TEST CONDITIONS
74HCT
UNIT
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min.
typ.
max.
min.
max.
min.
max.
t
PHL
/ t
PLH
propagation delay
nA, nB, nC to nY
output transition time
12
21
26
32
ns
4.5
Fig.6
t
THL
/ t
TLH
7
15
19
22
ns
4.5
Fig.6
Fig.6 Waveforms showing the input (nA, nB, nC) to output (nY) propagation delays and the output transition times.
(1) HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
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