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参数资料
| 型号： | 935051240112 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 总线收发器 |
| 英文描述： | HCT SERIES, OCTAL 1-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24 |
| 封装： | PLASTIC, SO-24 |
| 文件页数： | 8/10页 |
| 文件大小： | 99K |
| 代理商： | 935051240112 |
September 1993
7
Philips Semiconductors
Product specication
Octal bus transceiver/register; 3-state
74HC/HCT652
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 the HCT types
The value of additional quiescent supply current (
ICC) for unit a 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 = 50 pF.
INPUT
UNIT LOAD COEFFICIENT
SAB, SBA
0.75
A0 to A7 and B0 to B7
0.75
CPAB, CPBA
1.50
OEAB
1.50
OEBA
1.50
INPUT
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
+25
40 to +85
40 to +125
VCC
(V)
WAVEFORMS
MIN. TYP. MAX.
MIN. MAX. MIN.
MAX.
tPHL/tPLH
propagation delay
An, Bn to Bn, An
16
27
34
41
ns
4.5
Fig.6
tPHL/tPLH
propagation delay
CPAB, CPBA to Bn, An
23
39
49
59
ns
4.5
Fig.7
tPHL/tPLH
propagation delay
SAB, SBA to Bn, An
27
46
55
66
ns
4.5
Fig.8
tPZH/tPZL
3-state output enable
time
OEAB, OEBA to An, Bn
18
33
41
50
ns
4.5
Fig.9
tPHZ/tPLZ
3-state output disable
time
OEAB, OEBA to An, Bn
16
35
44
53
ns
4.5
Fig.9
tTHL/tTLH
output transition time
512
15
18
ns
4.5
Fig.6, 8
tW
clock pulse width
HIGH or LOW
CPAB or CPBA
16
6
20
24
ns
4.5
Fig.7
tsu
set-up time
An, Bn to CPAB, CPBA
10
5
13
15
ns
4.5
Fig.7
th
hold time
An, Bn to CPAB, CPBA
5
2
6
8
ns
4.5
Fig.7
fmax
maximum clock pulse
frequency
30
83
24
20
MHz
4.5
Fig.7
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