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74HCT373 Datasheet(数据表) 6 Page - NXP Semiconductors

部件型号  74HCT373
说明  Octal D-type transparent latch; 3-state
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 

   
 6 page
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September 1993
6
Philips Semiconductors
Product specification
Octal D-type transparent latch; 3-state
74HC/HCT373
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
Dn
LE
OE
0.30
1.50
1.00
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
Dn to Qn
17
30
38
45
ns
4.5
Fig.7
tPHL/ tPLH
propagation delay
LE to Qn
16
32
40
48
ns
4.5
Fig.8
tPZH/ tPZL
3-state output enable time
OE to Qn
19
32
40
48
ns
4.5
Fig.9
tPHZ/ tPLZ
3-state output disable time
OE to Qn
18
30
38
45
ns
4.5
Fig.9
tTHL/ tTLH
output transition time
5
12
15
18
ns
4.5
Fig.7
tW
LE pulse width
HIGH
16
4
20
24
ns
4.5
Fig.8
tsu
set-up time
Dn to LE
12
6
15
18
ns
4.5
Fig.10
th
hold time
Dn to LE
4
−1
4
4
ns
4.5
Fig.10




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