74HC7731 Ver la hoja de datos (PDF) - Philips Electronics
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74HC7731 Datasheet PDF : 8 Pages
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Philips Semiconductors
Quad 64-bit static shift register
Product specification
74HC/HCT7731
UNIT LOAD COEFFICIENT
INPUT
UNIT LOAD
COEFFICIENT
CPn
0.7
RECn
0.4
Dn
0.5
Notes
1. The RS input has CMOS input switching levels.
2. 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 Table 1.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF.
Tamb (°C)
TEST CONDITION
SYMBOL
PARAMETER
+25
−40 to +85 −40 to +125 UNIT
MIN TYP MAX MIN MAX MIN MAX
VCC
(V)
WAVEFORMS
tPHL/tPLH propagation delay time − 24 42 − 52 − 63 ns 4.5 Fig.4
CP to Qn
tTHL/tTLH output transmission time − 7 15 − 18 − 22 ns 4.5 Fig.4
tW
clock pulse width
HIGH or LOW
16 7 −
20 −
24 −
ns 4.5 Fig.4
tsu
set-up time Dn to CPn
12 3 −
15 −
18 −
ns 4.5 Fig.4
tsu
set-up time RECn to CPn 15 6 −
18 −
22 −
ns 2
Fig.5
th
hold time Dn to CPn
50 −
6−
7−
ns 2 Fig.4
th
hold time RECn to CPn 2 −3 −
2−
3−
ns 4.5 Fig.5
fmax
maximum clock pulse
30 80 −
24 −
20 −
MHz 4.5 Fig.4 (note 1)
frequency
September 1993
6
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