Texas Instruments SN54LS
SN54LS variants from Texas Instruments
SN54LS Overview
What changes between part numbers, and what to check before you lock the BOM — Counters and Dividers.
SN54LS is a Texas Instruments order-code family — not a single orderable MPN. This page lists 27 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
Number of Bits: 4 | Max Operating Temp: 125 | Min Operating Temp: -55 | Number of Pins: 16 | Terminal Position: DUAL | Jedec Package Code: R-CDIP-T16 Other listed variants describe: Military 4-ch, 2-input, 4.5-V to 5.5-V bipolar NAND gates with open-collector outputs 14-CDIP -55 to 125; Quadruple 2-Input Positive-AND Gates With Open-Collector Outputs 14-CDIP -55 to 125.
Across listed variants, watch these parameters: packages: 20-CDIP (0.300", 7.62mm).
Suffix examples in this family: 190J, 03J, 09J, 132J, 136J, 139AJ, 155AJ, 158J. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Example MPNs: SN54LS190J, SN54LS03J, SN54LS09J, SN54LS132J, SN54LS136J, SN54LS139AJ.
Key Features
- Footprint / package: 20-CDIP (0.300", 7.62mm)Single package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 27 distinct suffix patternsExamples: 190J, 03J, 09J, 132J, 136J (+22 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Counters and Dividers — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 27 SN54LS part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| SN54LS190J | Number of Bits: 4 | Max Operating Temp: 125 | Min Operating Temp: -55 | Number of Pins: 16 | Terminal Position: DUAL | Jedec Package Code: R-CDIP-T16 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS03J | Military 4-ch, 2-input, 4.5-V to 5.5-V bipolar NAND gates with open-collector outputs 14-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS09J | Quadruple 2-Input Positive-AND Gates With Open-Collector Outputs 14-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS132J | Military 4-ch, 2-input, 4.5-V to 5.5-V bipolar NAND gates with Schmitt-Trigger inputs 14-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS136J | Military 4-ch, 2-input, 4.5-V to 5.5-V bipolar XOR (exclusive OR) gates with open-collector outputs 14-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS139AJ | Dual 2-Line To 4-Line Decoders/Demultiplexers 16-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS155AJ | Dual 2-Line To 4-Line Decoders/Demultiplexers 16-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS158J | Quadruple 2-Line To 1-Line Data Selectors/Multiplexers 16-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS166AJ | Parallel-Load 8-Bit Shift Registers 16-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS191J | Synchronous Up/Down Counters With Down/Up Mode Control 16-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS194AJ | 4-Bit Bidirectional Universal Shift Registers 16-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS241J | Military 8-ch, 4.5-V to 5.5-V bipolar buffers with 3-state outputs 20-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS243J | Quadruple Bus Transceivers 14-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS251J | Data Selectors/Multiplexers With 3-State Outputs 16-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS266J | Military 4-ch, 2-input, 4.5-V to 5.5-V bipolar XNOR (exclusive NOR) gates with open-collector output 14-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS280J | Parity Generator/Checker 9-Bit 1-Element 14-Pin CDIP Tube | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS283J | Binary Full Adder Single-Element 4-Bit 16-Pin CDIP Tube | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS30J | 8-Input Positive-NAND Gates 14-CDIP -55 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS378J | 6-Bit D-Type Flip-Flop, 40MHz, TTL, CDIP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN54LS379J | Quad D-Type Flip-Flop, 40MHz, 5V, CDIP, Pos Edge | - | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on SN54LS map to package, grade, and reel options.
SN54LS uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: 190J, 03J, 09J, 132J, 136J, 139AJ, 155AJ, 158J, 166AJ, 191J (+17 more).
Full MPN examples: SN54LS190J, SN54LS03J, SN54LS09J, SN54LS132J, SN54LS136J.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
How to Choose the Right SN54LS Counters and Dividers
Match the footprint first
Packages here: 20-CDIP (0.300", 7.62mm). Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For SN54LS, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "SN54LS" — include the full suffix (e.g. 190J, 03J, 09J). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for SN54LS product family
Identity
Variant Parameters
Source SN54LS with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 27 ordering variants from Texas Instruments. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the SN54LS product family.
Related Base Numbers
Related Series
Explore product families linked to this base-number page.