參數(shù)資料
型號： 935186920112
廠商： NXP SEMICONDUCTORS
元件分類： 總線收發(fā)器
英文描述： HCT SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝： PLASTIC, SSOP-20
文件頁數(shù)： 6/8頁
文件大?。?/td> 59K
代理商： 935186920112
December 1990
6
Philips Semiconductors
Product specication
Octal D-type ip-op; positive edge-trigger;
3-state
74HC/HCT374
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (
ICC) for a unit load of 1 is given in the family specifications.
To determine
ICC per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr =tf = 6 ns; CL =50pF
INPUT
UNIT LOAD COEFFICIENT
OE
CP
Dn
1.25
0.90
0.35
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HCT
VCC
(V)
WAVEFORMS
+25
40 to +85 40 to +125
min.
typ.
max. min. max. min.
max.
tPHL/ tPLH
propagation delay
CP to Qn
16
32
40
48
ns
4.5
Fig.6
tPZH/ tPZL
3-state output enable time
OE to Qn
16
30
38
45
ns
4.5
Fig.7
tPHZ/ tPLZ
3-state output disable time
OE to Qn
18
28
35
42
ns
4.5
Fig.7
tTHL/ tTLH
output transition time
5
12
15
18
ns
4.5
Fig.6
tW
clock pulse width
HIGH or LOW
19
11
24
29
ns
4.5
Fig.6
tsu
set-up time
Dn to CP
12
7
15
18
ns
4.5
Fig.8
th
hold time
Dn to CP
5
3
5
ns
4.5
Fig.8
fmax
maximum clock pulse
frequency
26
44
21
17
MHz
4.5
Fig.6
相關(guān)PDF資料
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