參數(shù)資料
型號(hào): 74HCT42PW
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: Quadruple D-Type Flip-Flops With Clear 16-SOIC -40 to 85
中文描述: HCT SERIES, DECIMAL DECODER/DRIVER, INVERTED OUTPUT, PDSO16
文件頁(yè)數(shù): 5/6頁(yè)
文件大?。?/td> 41K
代理商: 74HCT42PW
December 1990
5
Philips Semiconductors
Product specification
BCD to decimal decoder (1-of-10)
74HC/HCT42
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
Output capability: standard
I
CC
category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
.
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.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
SYMBOL PARAMETER
T
amb
(
°
C)
TEST CONDITIONS
74HC
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
A
n
to Y
n
47
17
14
19
7
6
150
30
26
75
15
13
190
38
33
95
19
16
225
45
38
110
22
19
ns
2.0
4.5
6.0
2.0
4.5
6.0
Fig.6
t
THL
/ t
TLH
output transition time
ns
Fig.6
INPUT
UNIT LOAD COEFFICIENT
A
n
1.0
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
A
n
to Y
n
output transition time
20
35
44
53
ns
4.5
Fig.6
t
THL
/ t
TLH
7
15
19
22
ns
4.5
Fig.6
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