參數(shù)資料
型號: 74HC9114
廠商: NXP Semiconductors N.V.
英文描述: Nine wide Schmitt trigger buffer; open drain outputs; inverting
中文描述: 九廣施密特觸發(fā)緩沖區(qū);開漏輸出;反相
文件頁數(shù): 6/7頁
文件大小: 45K
代理商: 74HC9114
December 1990
6
Philips Semiconductors
Product specification
Nine wide Schmitt trigger buffer;
open drain outputs
74HC/HCT9115
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Transfer characteristics are given below.
Output capability: standard
I
CC
category: MSI
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.
TRANSFER CHARACTERISTICS FOR 74HCT
Voltages are referred to GND (ground = 0 V)
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
INPUT
UNIT LOAD COEFFICIENT
A
n
0.3
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min.
typ.
max. min.
max.
min.
max.
V
T
+
positive-going threshold
0.9
1.2
0.7
0.8
0.2
0.2
1.50
1.70
1.06
1.27
0.44
0.44
2.0
2.1
1.4
1.7
0.8
0.8
0.9
1.2
0.7
0.8
0.2
0.2
2.0
2.1
1.4
1.7
0.8
0.8
0.9
1.2
0.7
0.8
0.2
0.2
2.0
2.1
1.4
2.7
0.8
0.8
V
4.5
5.5
4.5
5.5
4.5
5.5
Fig.6
V
T
negative-going threshold
V
Fig.6
V
H
hysteresis (V
T
+
V
T
)
V
Fig.6
SYMBOL
PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+
25
40 to
+
85
40 to
+
125
min. typ.
max.
min.
max.
min.
max.
t
PHL
/ t
PLZ
propagation delay
A
n
to Y
n
output transition time
18
31
39
47
ns
4.5
Fig.7
t
THL
7
15
19
22
ns
4.5
Fig.7
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