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74HC174 Datasheet(PDF) 6 Page - NXP Semiconductors

Part No. 74HC174
Description  Hex D-type flip-flop with reset; positive-edge trigger
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74HC174 Datasheet(HTML) 6 Page - NXP Semiconductors

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1998 Jul 08
6
Philips Semiconductors
Product specification
Hex D-type flip-flop with reset; positive-edge trigger
74HC/HCT174
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC 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
∆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
Dn
0.25
CP
1.30
MR
1.25
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
21
35
44
53
ns
4.5
Fig.6
tPHL
propagation delay
MR to Qn
20
35
44
53
ns
4.5
Fig.7
tTHL/ tTLH
output transition time
7
15
19
22
ns
4.5
Fig.6
tW
clock pulse width
HIGH or LOW
16
7
20
24
ns
4.5
Fig.6
tW
master reset pulse
width; LOW
20
7
25
30
ns
4.5
Fig.7
trem
removal time MR to CP
12
−3
15
18
ns
4.5
Fig.7
tsu
set-up time Dn to CP
16
4
20
24
ns
4.5
Fig.8
th
hold time Dn to CP
5
−3
5
5
ns
4.5
Fig.8
fmax
maximum clock pulse
frequency
30
63
24
20
MHz
4.5
Fig.6


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