SN74LS122, SN74LS123
Retriggerable Monostable Multivibrators
These dc triggered multivibrators feature pulse width cont...
SN74LS122, SN74LS123
Retriggerable Monostable Multivibrators
These dc triggered multivibrators feature pulse width control by three methods. The basic pulse width is programmed by selection of external resistance and capacitance values. The LS122 has an internal timing resistor that allows the circuits to be used with only an external capacitor. Once triggered, the basic pulse width may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear.
Overriding Clear Terminates Output Pulse Compensated for VCC and Temperature Variations DC Triggered from Active-High or Active-Low Gated Logic Inputs Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle Internal Timing Resistors on LS122
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min Typ Max Unit
VCC
Supply Voltage
TA
Operating Ambient
Temperature Range
4.75 5.0 5.25
V
0
25
70
°C
IOH
Output Current − High
−0.4 mA
IOL
Output Current − Low
8.0
mA
Rext
External Timing Resistance 5.0
260 kW
Cext
External Capacitance
No Restriction
Rext/Cext Wiring Capacitance at Rext/Cext Terminal
50
pF
http://onsemi.com
LOW POWER
SCHOTTKY
14 1
14 1
16 1
16 1
16 1
PLASTIC N SUFFIX CASE 646
SOIC D SUFFIX CASE 751A
PLASTIC N SUFFIX CASE 648
SOIC D SUFFIX CASE 751B
SOEIAJ M SUFFIX CASE 966
ORDERING INFORMATION
Device
Package
Shipping
SN74LS122N
14 Pin DIP 2000 Units/Box
SN74LS122D
SOIC−14
55 Units/Rail
SN74LS122D...