Philips Semiconductors
Octal D-type flip-flop with data enable;
positive-edge trigger
Product specification
74AHC377; 74AHCT377
Type 74AHCT377
GND = 0 V; tr = tf ≤ 3.0 ns.
SYMBOL PARAMETER
TEST CONDITIONS
WAVEFORMS CL
Tamb (°C)
25
−40 to +85 −40 to +125 UNIT
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
VCC = 4.5 to 5.5 V; typical values at VCC = 5.0 V
tPHL/tPLH
fmax
propagation delay see Figs 6 and 8 15 pF −
CP to Qn
maximum clock see Figs 6 and 8
90
pulse frequency
4.0 9.0
140 −
1.0 10.5 1.0 11.5 ns
80 −
80 −
MHz
tPHL/tPLH propagation delay see Figs 6 and 8 50 pF −
5.7
CP to Qn
tW
clock pulse width see Figs 6 and 8
HIGH or LOW
5.0 −
10.5 1.0 12.0 1.0 13.5 ns
−
5.0 −
5.0 −
ns
tsu
set-up time
see Figs 7 and 8
Dn to CP
set-up time
E to CP
4.5 −
−
4.5 −
4.5 −
ns
4.5 −
−
4.5 −
4.5 −
ns
th
hold time
Dn to CP
hold time
E to CP
2.0 −
−
2.0 −
2.0 −
ns
2.0 −
−
2.0 −
2.0 −
ns
fmax
maximum clock see Figs 6 and 8
pulse frequency
85 130 −
75 −
75 −
MHz
2000 Aug 15
10