74LS ON Semiconductor, 74LS Datasheet - Page 4

• Manufacturer Part Number: 74LS
• Description: SYNCHRONOUS 4-BIT UP/DOWN COUNTER
• Manufacturer: ON Semiconductor

CLOCK
INPUT
LOAD
INPUT
DATA INPUTS
A,B,C, and D
ENABLE P or
ENABLE T
UP/DOWN
INPUT
ENABLE T
INPUT
RIPPLE
CARRY
OUTPUT
1.3 V
1.3 V
t PHL
t w(clock)
1.3 V
1.3 V
t s
t s
PARAMETER MEASUREMENT INFORMATION
1.3 V
1.3 V
t w(clock)
FAST AND LS TTL DATA
t h
t h
SN54/74LS669
VOLTAGE WAVEFORMS
1.3 V
1.3 V
1.3 V
5-4
t s
1.3 V
1.3 V
t s
t s
1.3 V
1.3 V
t h
1.3 V
t PLH
1.3 V
t s
t h
1.3 V
1.3 V
1.3 V
1.3 V
t h
3 V
0 V
V OL
V OH
3 V
0 V
3 V
0 V
3 V
0 V
0 V
3 V
3 V
0 V