HD74LS74A_15 Datasheet, PDF (2/8 Pages) Renesas Technology Corp – Dual D-type Positive Edge-triggered Flip-Flops (with Preset and Clear)

HD74LS74A
Preliminary
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage
Input voltage
Power dissipation
Storage temperature
V_CC
V_IN
P_T
Tstg
7
V
7
V
400
mW
–65 to +150
C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Symbol
Supply voltage
V_CC
Output current
I_OH
I_OL
Operating temperature
Topr
Clock frequency
f_clock
Pulse width
Clock High
t_w
Clear Preset
t_w
Setup time
“H” Data
t_su
“L” Data
t_su
Hold time
t_h
Note: ; The arrow indicates the rising edge.
Min
4.75
—
—
–20
0
25
25
20
20
5
Typ
5.00
—
—
25
—
—
—
—
—
—
Max
5.25
–400
8
75
25
—
—
—
—
—
Unit
V
A
mA
C
MHz
ns
ns
ns
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Symbol
min.
typ.* max.
Unit
Condition
Input voltage
Output voltage
D
V_IH
2.0
—
—
V
V_IL
—
—
0.8
V
V_OH
2.7
—
—
V
V_CC = 4.75 V, V_IH = 2 V, V_IL = 0.8 V,
I_OH = –400 A
V_OL
—
—
0.5
V
I_OL = 8 mA V_CC = 4.75 V, V_IL = 0.8 V,
—
—
0.4
I_OL = 4 mA ^VIH ^{= 2 V}
—
—
20
Clear
—
—
40
Preset
I_IH
—
—
40
A V_CC = 5.25 V, V_I = 2.7 V
Clock
—
—
20
D
—
—
–0.4
Input
current
Clear
Preset
—
—
–0.8
I_IL
—
—
–0.8
mA V_CC = 5.25 V, V_I = 0.4 V
Clock
—
—
–0.4
D
—
—
0.1
Clear
—
—
0.2
Preset
I_I
—
—
0.2
mA V_CC = 5.25 V, V_I = 7 V
Clock
—
—
0.1
Short-circuit output
current
I_OS
–20
—
–100
mA V_CC = 5.25 V
Supply current
I_CC**
—
4
8
mA V_CC = 5.25 V
Input clamp voltage
V_IR
—
—
–1.5
V
V_CC = 4.75 V, I_IN = –18 mA
Notes: * V_CC = 5 V, Ta = 25°C
** With all output open, I_CC is measured with the Q and Q outputs high in turn. At the time of measurement, the
clock input is grounded.
R04DS0012EJ0400 Rev.4.00
Dec 21, 2011
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