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Product Detailed Parameters
- Description：IC MULTIVIBRATOR
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Independent Circuits：-
- Schmitt Trigger Input：-
- Propagation Delay：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The SN74LS123DB is a dual retriggerable monostable multivibrator from the Texas Instruments LS logic series. It operates within a supply voltage range of 4.75 V to 5.25 V and features a maximum static current of 12 mA. The device provides a low-level output current of 8 mA and a high-level output current of -0.4 mA. Propagation delay is specified at 56 ns at 5 V, with a minimum pulse width of 40 ns. It is housed in a 16-pin SOIC package and supports an operating temperature range of 0°C to +70°C.
Feature Summary
- Dual retriggerable monostable multivibrator architecture
- DC-triggered operation for reliable pulse generation
- Internal timing resistor integration simplifies external component requirements
Applications
- Pulse generation circuits
- Timing delays
- Frequency division
Procurement Notes
Verify that the specific ordering suffix 'DB' corresponds to the SSOP-16 package variant rather than the standard SOIC-16 (D) package when sourcing components. Confirm RoHS compliance status and lead finish specifications against the manufacturer's latest Package Option Addendum to ensure compatibility with assembly processes.
Selection Notes
Select this component for designs requiring dual independent monostable channels within a compact surface-mount footprint. Ensure the application environment remains within the commercial temperature limits of 0°C to +70°C. Verify that the required pulse widths align with the internal timing capabilities and external RC network constraints defined in the datasheet.
Part Context
This part belongs to the SN54/74LS122/123 family of retriggerable monostable multivibrators manufactured by Texas Instruments. The LS designation indicates Low-power Schottky logic technology, providing improved speed and power consumption characteristics compared to standard TTL families while maintaining compatible logic levels.
Replacement Considerations
SN74LS123DR
FAQ
Does the SN74LS123DB include an internal timing resistor?
No, the SN74LS123 does not contain an internal timing resistor; only the SN74LS122 includes one.
Can the SN74LS123 be retriggered during its output pulse?
Yes, the device is designed as a retriggerable monostable multivibrator, allowing the output pulse to be extended by new trigger events.
