|
HD74LS259 Datasheet, PDF (4/8 Pages) Hitachi Semiconductor – 8-bit Addressable Latches | |||
|
◁ |
HD74LS259
Electrical Characteristics
Item
Input voltage
Symbol
VIH
VIL
min.
2.0
â
typ.*
â
â
max.
â
0.8
Unit
V
V
VOH
2.7
â
â
V
Output voltage
â
â
0.4
VOL
V
â
â
0.5
IIH
â
20
µA
Input current
IIL
â
â0.4
mA
II
â
0.1
mA
Short-circuit output current
IOS
â20
â
â100 mA
Supply current**
ICC
â
22
36
mA
Input clamp voltage
VIK
â
â
â1.5
V
Notes: * VCC = 5 V, Ta = 25°C
** ICC is measured with all outputs open and all inputs grounded.
(Ta = â20 to +75 °C)
Condition
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,
IOH = â400 µA
IOL = 4 mA VCC = 4.75 V, VIH = 2 V,
IOL = 8 mA VIL = 0.8 V
VCC = 5.25 V, VI = 2.7 V
VCC = 5.25 V, VI = 0.4 V
VCC = 5.25 V, VI = 7 V
VCC = 5.25 V
VCC = 5.25 V
VCC = 4.75 V, IIN = â18 mA
Switching Characteristics
(VCC = 5 V, Ta = 25°C)
Item
Symbol Inputs Output
min.
typ.
max.
Unit
Condition
tPHL
Clear Q0 to Q7
â
17
27
ns
tPLH
tPHL
â
Data
Q0 to Q7
â
20
13
32
21
ns
Propagation delay time
tPLH
tPHL
Address Q0 to Q7
â
â
24
18
38
29
CL = 15 pF,
ns
RL = 2 kâ¦
tPLH
tPHL
Enable Q0 to Q7
â
â
22
15
35
24
ns
Rev.2.00, Feb.18.2005, page 4 of 7
|
▷ |