HD74LS669 Datasheet, PDF (3/9 Pages) Hitachi Semiconductor – Synchronous Up/Down 4-bit Binary Counters

HD74LS669
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Supply voltage
V_CC
7
V
Input voltage
V_IN
7
V
Power dissipation
Storage temperature
P_T
Tstg
400
mW
–65 to +150
°C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Count frequency
Clock pulse width
Input Data
A, B, C, D
Setup time
Enable P, T
Load
Up/Down
Hold time
Symbol
V_CC
I_OH
I_OL
Topr
ƒ_count
t_{w (CK)}
t_su
t_h
Min
4.75
—
—
–20
0
25
25
35
30
35
0
Typ
5.00
—
—
25
—
—
—
—
—
—
—
Max
5.25
–400
8
75
25
—
—
—
—
—
—
Unit
V
µA
mA
°C
MHz
ns
ns
ns
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Symbol min. typ.* max. Unit
Condition
Input voltage
V_IH
2.0
—
—
V
V_IL
—
—
0.8
V
Output voltage
V_OH
2.7
—
—
V
V_CC = 4.75 V, V_IH = 2 V,
V_IL = 0.8 V, I_OH = –400 µA
V_OL
—
—
—
0.4
—
0.5
V
I_OL = 4 mA V_CC = 4.75 V,
V
I_OL = 8 mA ^VIH ^{= 2 V, V}IL ^{= 0.8 V}
A, B, C, D, P, U/D
—
—
20
Clock, T
I_IH
—
—
20
µA V_CC = 5.25 V, V_I = 2.7 V
Load
—
—
40
A, B, C, D, P, U/D
—
—
–0.4
Input current Clock, T
I_IL
—
—
–0.4 mA VCC = 5.25 V, VI = 0.4 V
Load
—
—
–0.8
A, B, C, D, P, U/D
—
—
0.1
Clock, T
I_I
—
—
0.1
mA V_CC = 5.25 V, V_I = 7 V
Load
—
—
0.2
Short-circuit output current
I_OS
–20
—
–100 mA V_CC = 5.25 V
Supply current**
I_CC
—
20
34
mA V_CC = 5.25 V
Input clamp voltage
V_IK
—
—
–1.5
V V_CC = 4.75 V, I_IN = –18 mA
Notes: * V_CC = 5 V, Ta = 25°C
** I_CC is measured after applying a momentary 4.5 V, then ground, to clock input with all other inputs grounded
the outputs open.
Rev.2.00, Feb.18.2005, page 3 of 8