Texas Instruments SN74AS
SN74AS variants from Texas Instruments
SN74AS Overview
What changes between part numbers, and what to check before you lock the BOM — Buffers, Drivers, Receivers and Transceivers.
Key Features
- Footprint / package: PDIP, SOIC, 20-DIP (0.300, 7.62mm)Land pattern and thermal pad differ between these packages — run a quick footprint check before you swap variants.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 97 distinct suffix patternsExamples: 533AN, 645N, 109AD, 109AN, 109N (+92 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Buffers, Drivers, Receivers and Transceivers — 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 97 SN74AS 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 |
|---|---|---|---|---|---|---|---|
| SN74AS533AN | Package: PDIP | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 24mA | Number of Outputs: 8 | Number of Bits: 8 | Logic Function: D-Type, Latch | PDIP | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS645N | Package: PDIP | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Number of Channels: 8 | Number of Outputs: 8 | Number of Bits: 8 | Logic Function: Transceiver, Inverting | PDIP | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS109AD | Package: SOIC | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 20mA | Number of Bits: 2 | Frequency: 105MHz | Logic Function: Flip-Flop, JK-Type | SOIC | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS109AN | Package: PDIP | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 20mA | Number of Bits: 2 | Frequency: 105MHz | Logic Function: Flip-Flop, JK-Type | PDIP | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS109N | Package: PDIP | Mounting Type: Through Hole | Logic Function: JK# -Type | Max Operating Temp: 70°C | Min Operating Temp: 0°C | PDIP | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS174N | Package: PDIP | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 20mA | Number of Bits: 6 | Frequency: 100MHz | Logic Function: D-Type, Flip-Flop | PDIP | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS822ADW | Package: SOIC | Mounting Type: Surface Mount | Logic Function: D-Type Bus Interface | Max Operating Temp: 70°C | Min Operating Temp: 0°C | SOIC | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS02N | Package: PDIP | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 8mA | Max Output Current: 20mA | Number of Outputs: 1 | Number of Bits: 4 | PDIP | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS1032AN | Package: PDIP | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 48mA | Max Output Current: 48mA | Number of Outputs: 1 | Number of Bits: 4 | PDIP | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS11D | Package: SOIC | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 20mA | Max Output Current: 20mA | Number of Outputs: 1 | Number of Bits: 3 | SOIC | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS30D | Package: SOIC | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 20mA | Max Output Current: 20mA | Number of Outputs: 1 | Logic Function: NAND GATE | SOIC | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS805BN | Package: PDIP | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 48mA | Max Output Current: 48mA | Number of Outputs: 1 | Logic Function: NOR GATE | PDIP | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS832BDW | Package: SOIC | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 48mA | Max Output Current: 48mA | Number of Outputs: 1 | Number of Bits: 6 | SOIC | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS576DWG4 | Package: SOIC | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Output Current: 48mA | Number of Outputs: 8 | Frequency: 125MHz | Logic Function: D-Type, Flip-Flop | SOIC | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS153D | Package: SOIC | Operating Supply Voltage: 5V | Max Supply Voltage: 5.5V | Min Supply Voltage: 4.5V | Number of Channels: 2 | Number of Outputs: 2 | Number of Bits: 4 | Logic Function: Multiplexer | SOIC | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS00N | 4-ch 2-input NAND Gate IC, 4.5-5.5V, 4.5ns, PDIP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS00NSR | 4-Input NAND Gate IC, 4.5-5.5V, 20mA, 4.5ns, SOP | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS02DR | Quad 2-Input NOR Gate IC, 4.5ns, 5V, SOIC, Surface Mount | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS02NSR | 4x 2-Input NOR Gate IC, 4.5ns, 5V, SOP, Surface Mount | - | Texas Instruments | Active | Compliant | In Stock | |
| SN74AS04N | 6-Ch Bipolar Inverter IC, 4.5-5.5V, 5ns, PDIP | - | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on SN74AS map to package, grade, and reel options.
How to Choose the Right SN74AS Buffers, Drivers, Receivers and Transceivers
Match the footprint first
Packages here: PDIP, SOIC, 20-DIP (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 SN74AS, 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 "SN74AS" — include the full suffix (e.g. 533AN, 645N, 109AD). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for SN74AS product family
Identity
Base Model
SN74AS
Manufacturer
Texas Instruments
Series
74AS
Listed Variants
97
Variant Parameters
Package Type
PDIP, SOIC, 20-DIP (0.300, 7.62mm)
Lifecycle Status
Active
RoHS Status
Compliant
Source SN74AS with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 97 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 SN74AS product family.
SN74AS is a base / family code from Texas Instruments. You order a full MPN such as SN74AS533AN, SN74AS645N, SN74AS109AD. The variant table lists 97 orderable lines with different suffixes.
Listed suffix fragments include: 533AN, 645N, 109AD, 109AN, 109N, 174N. Typically they encode package (PDIP, SOIC, 20-DIP (0.300, 7.62mm)), temperature grade, and tape/reel option. Always decode on the Texas Instruments datasheet ordering guide — do not guess from pattern alone.
On this page the varying fields are: Package Type. Filter the table by the parameter you care about before picking an MPN.
Only after footprint and thermal review. Packages listed here (PDIP, SOIC, 20-DIP (0.300, 7.62mm)) use different land patterns and often different thermal resistance. Layout swaps need a new paste stencil at minimum, not just a BOM edit.
Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.
Full manufacturer MPN (not just SN74AS), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.
Related Base Numbers
Related Series
Explore product families linked to this base-number page.