74HCHCT377 Datasheet, PDF (6/7 Pages) NXP Semiconductors – Octal D-type flip-flop with data enable; positive-edge trigger

Philips Semiconductors
Octal D-type flip-flop with data enable;
positive-edge trigger
Product specification
74HC/HCT377
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.
INPUT
E
CP
D_n
UNIT LOAD COEFFICIENT
1.50
0.50
0.20
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
SYMBOL
PARAMETER
t_PHL/ t_PLH
t_THL/ t_TLH
propagation delay
CP to Q_n
output transition time
T_amb (°C)
TEST CONDITIONS
74HCT
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
17 32
40
48 ns 4.5 Fig.6
7 15
19
22 ns 4.5 Fig.6
t_W
clock pulse width
HIGH or LOW
20 8
25
30
t_su
set-up time
D_n to CP
t_su
set-up time
E to CP
12 4
15
18
22 12
28
33
t_h
hold time
D_n to CP
t_h
hold time
E to CP
2 −4
2
2
3 −2
3
3
f_max
maximum clock pulse
27 48
22
18
frequency
ns 4.5 Fig.6
ns 4.5 Fig.7
ns 4.5 Fig.7
ns 4.5 Fig.7
ns 4.5 Fig.7
MHz 4.5 Fig.6
December 1990
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