Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Channels | 2 comparators |
| Output | Open-collector outputs |
| Input Common Mode | Includes ground in single-supply use |
| Supply | Wide single- or dual-supply comparator family |
| Temperature | −55°C to +125°C exact order-code range |
| Logic Interface | Pull-up selectable for TTL/MOS/CMOS-compatible logic levels |
| Use | Military-temperature threshold, zero-crossing and supervisory functions |
| Exact Package / Packing | SOIC (D), 8 pins; 2500-piece large reel; marking LM193 |
Product Overview
LM193DR is the extended-temperature dual member of the long-established LM193/293/393 comparator family. It is aimed at wide-temperature analog threshold detection rather than the lowest propagation delay or lowest offset available from newer B-generation comparators.
The open-collector outputs require external pull-up resistors, but that also lets the logic-high voltage be chosen independently from the comparator supply within ratings. Multiple outputs can be wire-combined for some alarm functions.
The −55°C to +125°C rating is a primary exact-order differentiator from commercial-family variants. The DR suffix selects SOIC-8 on a 2500-piece reel.
For related devices, see HKEQGOO’s Comparators category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | LM193DR |
| Channels | 2 comparators |
| Output | Open-collector outputs |
| Input Common Mode | Includes ground in single-supply use |
| Supply | Wide single- or dual-supply comparator family |
| Temperature | −55°C to +125°C exact order-code range |
| Logic Interface | Pull-up selectable for TTL/MOS/CMOS-compatible logic levels |
| Use | Military-temperature threshold, zero-crossing and supervisory functions |
| Exact Package / Packing | SOIC (D), 8 pins; 2500-piece large reel; marking LM193 |
| Manufacturer Status | Active / Production |
| Part Marking | LM193 |
Functional Highlights
Open-collector output gives flexible logic-domain interfacing
The pull-up can target a lower logic rail than the analog comparator supply, useful when sensing higher-voltage systems with a low-voltage MCU.
Temperature grade is selection-critical
LM193DR is relevant when the product must operate below the −40°C limit common to industrial parts.
Design Considerations
- Choose pull-up resistance from required rise time, sink current and wired-logic use.
- Do not apply newer LM393B/LM2903B offset or speed claims to this legacy LM193 order code.
- Check input common-mode and differential limits at the actual supply rails.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists LM193DR as Active / Production; SOIC (D), 8 pins; 2500-piece large tape and reel; −55°C to +125°C; marking LM193.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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