74HC7731 Datasheet, PDF (6/8 Pages) NXP Semiconductors – Quad 64-bit static shift register

Philips Semiconductors
Quad 64-bit static shift register
Product specification
74HC/HCT7731
UNIT LOAD COEFFICIENT
INPUT
UNIT LOAD
COEFFICIENT
CP_n
0.7
REC_n
0.4
D_n
0.5
Notes
1. The RS input has CMOS input switching levels.
2. 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 Table 1.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF.
T_amb (°C)
TEST CONDITION
SYMBOL
PARAMETER
+25
−40 to +85 −40 to +125 UNIT
MIN TYP MAX MIN MAX MIN MAX
V_CC
(V)
WAVEFORMS
t_PHL/t_PLH propagation delay time − 24 42 − 52 − 63 ns 4.5 Fig.4
CP to Q_n
t_THL/t_TLH output transmission time − 7 15 − 18 − 22 ns 4.5 Fig.4
t_W
clock pulse width
HIGH or LOW
16 7 −
20 −
24 −
ns 4.5 Fig.4
t_su
set-up time D_n to CP_n
12 3 −
15 −
18 −
ns 4.5 Fig.4
t_su
set-up time REC_n to CP_n 15 6 −
18 −
22 −
ns 2
Fig.5
t_h
hold time D_n to CP_n
50 −
6−
7−
ns 2 Fig.4
t_h
hold time REC_n to CP_n 2 −3 −
2−
3−
ns 4.5 Fig.5
f_max
maximum clock pulse
30 80 −
24 −
20 −
MHz 4.5 Fig.4 (note 1)
frequency
September 1993
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