HD74LV244A Datasheet, PDF (5/10 Pages) Hitachi Semiconductor – Octal Buffers / Drivers with 3-state Outputs

HD74LV244A
Switching Characteristics
Item
Propagation
delay time
Enable time
Disable time
Symbol
t_PLH
t_PHL
t_ZH
t_ZL
t_HZ
t_LZ
Ta = 25°C
Min Typ
— 7.5
— 9.5
— 8.9
— 10.8
— 9.1
— 13.4
Max
12.5
15.3
14.6
17.8
14.1
19.2
Ta = –40 to 85°C
Min
Max
1.0
15.0
1.0
18.0
1.0
17.0
1.0
21.0
1.0
16.0
1.0
21.0
Unit
ns
ns
ns
Test
Conditions
C_L = 15 pF
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
Item
Propagation
delay time
Enable time
Disable
time
Symbol
t_PLH
t_PHL
t_ZH
t_ZL
t_HZ
t_LZ
Ta = 25°C
Min Typ
— 5.4
— 6.8
— 6.3
— 7.8
— 7.6
— 11.0
Max
8.4
11.9
10.6
14.1
11.7
16.0
Ta = –40 to 85°C
Min
Max
1.0
10.0
1.0
13.5
1.0
12.5
1.0
16.0
1.0
13.0
1.0
18.0
Unit
ns
ns
ns
Test
Conditions
C_L = 15 pF
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
Item
Propagation
delay time
Enable time
Disable time
Symbol
t_PLH
t_PHL
t_ZH
t_ZL
t_HZ
t_LZ
Ta = 25°C
Min Typ
— 3.9
— 4.9
— 4.5
— 5.6
— 6.5
— 8.8
Ta = –40 to 85°C
Max Min
Max
5.5 1.0
6.5
7.5 1.0
8.5
7.3 1.0
8.5
9.3 1.0
10.5
12.2 1.0
13.5
14.2 1.0
15.5
Unit
ns
ns
ns
Test
Conditions
C_L = 15 pF
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
C_L = 15 pF
C_L = 50 pF
V_CC = 2.5 ± 0.2 V
FROM TO
(Input) (Output)
A
Y
OE
Y
OE
Y
V_CC = 3.3 ± 0.3 V
FROM TO
(Input) (Output)
A
Y
OE
Y
OE
Y
V_CC = 5.0 ± 0.5 V
FROM TO
(Input) ^(Output)
A
Y
OE
Y
OE
Y
Output-skew characteristics
Ta = 25°C
Ta = –40 to 85°C
C_L = 50 pF
Item
Symbol V_CC (V)
Min
Max
Min
Max
Unit
Output skew
t_{sk (O)}
2.3 to 2.7
—
3.0 to 3.6
—
2.0
—
1.5
—
2.0
ns
1.5
4.5 to 5.5
—
1.0
—
1.0
Note: Skew between any outputs of the same package switching in the same direction. This parameter is warranted
but not production tested.
Rev.3.00 Jun. 24, 2004 page 5 of 9