HD74LS74A_15 Datasheet, PDF (3/8 Pages) Renesas Technology Corp – Dual D-type Positive Edge-triggered Flip-Flops (with Preset and Clear)

HD74LS74A
Preliminary
Switching Characteristics
(V_CC = 5 V, Ta = 25°C)
Item
Symbol
Inputs
Outputs min. typ. max. Unit
Condition
Maximum clock frequency f_max
Propagation delay time
t_PLH
Clear, Clock Q, Q
t_PHL
or Preset
25
—
—
33
13
25
MHz
25
ns
C_L = 15 pF,
R_L = 2 k
40
ns
Timing Definition
t_w
Clock
Data
1.3 V
t_su
1.3 V
t_h
1.3 V
t_su
t_h
1.3 V
"H" Data
1.3 V
"L" Data
3V
0V
3V
1.3 V
0V
R04DS0012EJ0400 Rev.4.00
Dec 21, 2011
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