Product Overview
Motorola LM393AN 36V Dual Comparator - 8-Pin DIP Open Collector
Condition
Unused new old stock (NOS). Sourced from distributor surplus inventory. Package markings read LM393AN CKYZ with Motorola logo and 9704 date code. Through-hole pins are straight, clean, and unclipped.
Same or next business day shipping from our Idaho warehouse. Reliable parts since 1999. Honest pricing, no nonsense.
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Product Overview
Motorola LM393AN provides two independent precision voltage comparators designed to operate from a single power supply across a wide 2.0 V to 36 V range, or from split supplies of ±1.0 V to ±18 V. The open-collector output stage interfaces directly with DTL, TTL, and CMOS logic families. The A-grade suffix specifies a tight 2.0 mV maximum input offset voltage for reliable threshold detection in level sensing, analog monitoring, and interface circuits.
Key Features
- Dual independent comparators in a standard 8-pin plastic DIP (PDIP-8) package
- Wide supply capability: 2.0 V to 36 V single supply, or ±1.0 V to ±18 V split supply
- A-grade specification with low 2.0 mV maximum input offset voltage at 25°C
- Open-collector outputs compatible with TTL, DTL, MOS, and CMOS logic levels
- Low power consumption with 0.4 mA typical supply current independent of supply voltage
- Low input bias current of 25 nA typical and input offset current of 5.0 nA typical
- Motorola date code 9704 through-hole construction for breadboards and PCB replacement
Applications
- Bench prototyping and breadboard development of analog window comparators and over-voltage trip circuits
- Drop-in replacement for maintenance technicians servicing industrial control boards and power supply monitoring cards
- Hobbyist robotics and sensor trigger interfaces using photoresistors, thermistors, or magnetic switches
- Battery level monitoring and low-voltage threshold warning circuits in DIY electronics projects
Frequently Asked Questions
Does the LM393AN require pull-up resistors on the outputs?
Yes. The LM393AN features open-collector output stages. An external pull-up resistor connected from each output pin to the appropriate logic supply rail is required for active-high switching.
What is the difference between the LM393 and LM393AN?
The A suffix designates an improved input offset voltage tolerance of 2.0 mV maximum at 25°C compared to 5.0 mV on standard LM393 parts. The N suffix designates the standard 8-pin plastic dual in-line package (DIP-8).
Why buy individual Motorola comparators here instead of a bulk surplus lot?
You can purchase the exact count needed for your project or repair without committing to an uninspected bulk lot. Each IC is unused vintage stock with straight leads and verified markings. More pieces cost less each, and the price-break table on this page shows what each quantity costs. Shipping is $8 flat rate, free once the order passes $28, and orders leave our Idaho warehouse the same or next business day.
Motorola silicon from the late nineties has a quiet reputation for doing exactly what the circuit asks without drama. Plug it into your breadboard or PCB, wire your pull-up, and let it do its job.
