Description
Here's a concise introduction to the SN74LS123D:
The SN74LS123D is a dual retriggerable monostable multivibrator from Rochester Electronics, packaged in a SOIC-16 format. This component features DC-triggered logic inputs that can be either active-high or active-low gated, allowing for flexible design options. With retrigger ability up to 100% duty cycle, this device provides for very long output pulses.
The SN74LS123D has an overriding clear terminal, which Terminates the Output Pulse when triggered. This device is particularly useful in applications that require reliable timing and pulse generation, such as electronic control systems, telecommunications equipment, or industrial automation devices.
Features
The SN74LS123D features:
- D-C triggered from active-high or active-low gated logic inputs
- Retriggerable for very long output pulses, up to 100% duty cycle
- Overriding clear terminates output pulse
- '122 and 'LS122 have internal timing resistors
Package
The package type of SN74LS123D is SOIC-16 (Small Outline Integrated Circuit - 16 pins).
Pinout
The SN74LS123D is a dual retriggerable monostable multivibrator with 16 pins in a SOIC-16 package.
Here's a concise breakdown of the pin functions:
- Pins 1-8: Inputs (A, B, C, D, E, F, G, H)
- Pin 9: Output (Y)
- Pins 10-15: Unused
- Pin 16: VCC (Power)
The device has two monostable multivibrators that can be triggered by active-high or active-low logic inputs. The output pulse can be retriggered and has an overriding clear function to terminate the output pulse.
Manufacturer
The manufacturer of the SN74LS123D is Rochester Electronics, which is a leading independent semiconductor distributor and manufacturer of electronic components.
Applications
The SN74LS123D is a dual retriggerable monostable multivibrator, making it suitable for applications requiring precise timing and pulse generation. Common uses include:
- Pulse stretching or compression
- Timing circuits in industrial control systems
- Medical device timing and synchronization
- Telecommunications equipment timing and signaling
- Automotive electronics, such as anti-lock braking systems (ABS) and traction control systems (TCS)
Its retriggerable feature allows for long output pulses with high duty cycles.
Equivalent
According to Rohrerbus, the equivalent products for SN74LS123D are:
- Texas Instruments SN54ALS122
- Fairchild Semiconductor FM1146
- Motorola MC1022
- National Semiconductor LM1146
Please note that equivalent products may have similar functionality but not identical characteristics due to variations in internal design and manufacturing processes.
Payment
Shipping & Packing
Warranty
I have not checked the capacitance, but seems to be OK..