1. 74LS245: 3-State Octal Bus Transceiver
Jesse A. Coddington
Bi – Directional bus transceiver in a 20-pin package

2. Switching Characteristics
Vol
max voltage when output low
0.5 V
Voh
max voltage when output high
2.7V
Vil
max in voltage recognized as low
0.8 V
Vih
max in voltage recognized as high
2.0 V
Iol
max sink current when output low
24 mA
Ioh
max source current when output high
-15 mA
Iil
max source current at input low
20 uA
Iih
max sink current at input high
-0.2 mA
Switching Characteristics
low-to-high output
high-to-low output
12 – 16 ns
12 – 17 ns
enable time to low
enable time to high
40 – 45 ns
disable time to low
disable time to high
25 ns
Absolute Maximum Values
Vcc 7V
DIR or G
A or B
5.5V