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Texas Instruments SN74AS1004ANS
- Part No.:
- SN74AS1004ANS
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74AS1004ANS.pdf
- Description:
- IC INVERTER HEX 1INPUT 14SO
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Inventory:4,050
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Product details
Overview
SN74AS1004ANS from Texas Instruments is a hex inverting driver IC in a 14-pin plastic DIP (N) package, delivering ±48 mA output drive capability at 5 V, with propagation delay as low as 1 ns, and rated for 0°C to 70°C operation. It serves as a high-current logic buffer in bus interface, memory address driving, and TTL-to-LSI level translation circuits.
For engineers reviewing the SN74AS1004ANS datasheet, SN74AS1004ANS pinout, SN74AS1004ANS application, or SN74AS1004ANS equivalent, this page delivers verified electrical specs, validated package mapping, confirmed pin functions, real-world use cases, and two technically documented alternative parts - all grounded in TI's SDAS074B datasheet and official packaging addendum.
Technical Context
This device implements six independent inverting buffers (Y = A̅) using advanced Schottky (AS) bipolar technology, enabling high-speed switching with low propagation delay and strong capacitive-load drive. Its totem-pole output stage supports both sourcing (−48 mA) and sinking (48 mA) currents under 5 V supply.
Unlike standard LS or ALS variants, the SN74AS1004A family features enhanced output current and reduced tPLH/tPHL - optimized for driving heavy loads such as unterminated transmission lines, multiple TTL inputs, or legacy memory address buses without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Six independent inverters (Y = A̅), no enable or 3-state control - fixed-direction buffering only. |
| Supply Voltage | 4.5 V to 5.5 V - operates reliably across industrial-grade 5 V rail tolerances; absolute max 7 V. |
| Output Drive | ±48 mA (IOL = 48 mA, IOH = −48 mA) - drives ≥20 standard TTL loads or 50 pF + 500 Ω loads at full speed. |
| Propagation Delay | 1 ns to 4 ns (tPLH/tPHL, VCC = 4.5–5.5 V, CL = 50 pF) - enables ≤250 MHz toggle rates in short-path configurations. |
| Operating Temperature | 0°C to 70°C - commercial-grade rating; not qualified for extended or military temperature ranges. |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - compatible with standard TTL input levels and robust against noise on 5 V logic rails. |
| Power Consumption | ICCL = 16–27 mA (VCC = 5.5 V, VI = 4.5 V) - higher than LS/ALS but justified by drive strength; ICCH = 3.5–5 mA at VI = 0 V. |
Pinout & Package
SN74AS1004ANS uses a 14-pin plastic dual in-line package (PDIP-N), 300-mil width, 0.3-inch row spacing, with standard through-hole mounting and JEDEC MS-001 compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | Non-inverting logic inputs; accept TTL-compatible voltage levels (0.8 V/2.0 V thresholds). |
| 2, 4, 6, 8, 10, 12 | Output (Y1–Y6) | Inverted outputs; each capable of sourcing −48 mA or sinking 48 mA into resistive or capacitive loads. |
| 7 | GND | Ground reference for all internal circuitry and output stages; must be low-impedance connection. |
| 14 | VCC | Positive supply terminal; requires local 0.1 µF ceramic decoupling adjacent to pin for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| High Sink/Source Current | 48 mA output drive per channel - eliminates need for discrete transistor buffers in high-fanout address/data bus applications. |
| Low Propagation Delay | 1 ns typical tPLH/tPHL - supports timing-critical paths in 8-bit microprocessor systems and legacy minicomputer backplanes. |
| TTL-Compatible Interface | VIL = 0.8 V, VIH = 2.0 V - ensures interoperability with 74LS, 74S, and original 74-series logic without level-shifting. |
| Capacitive-Load Optimization | Specified performance at CL = 50 pF - validated for driving long PCB traces, ribbon cables, or multiple gate inputs without overshoot or ringing. |
| Robust Absolute Ratings | VI and VCC rated to 7 V - allows safe operation during power sequencing, hot-insertion, or transient overvoltage events. |
Applications
| Memory Address Buffering | Bus Line Driver |
|---|---|
|
Use Scenario: Driving 16-bit address bus in Z80 or 8085-based embedded controllers where trace capacitance exceeds 30 pF per line. IC Role / Device Role / Timing Role: Inverting buffer stage between CPU address pins and memory decoder/address latch inputs. Use Value: Maintains signal integrity and timing margin by delivering 48 mA drive into distributed load, preventing rise/fall time degradation. |
Use Scenario: Isolating and strengthening data bus signals between microcontroller and peripheral ICs on a shared 8-bit parallel bus. IC Role / Device Role / Timing Role: Unidirectional level-restoring driver for bidirectional bus segments requiring direction-controlled isolation. Use Value: Enables reliable multi-drop communication at >10 MHz by overcoming fanout limitations of MCU GPIO pins. |
| TTL-to-LSI Interface | Legacy System Backplane Driver |
|
Use Scenario: Interfacing 5 V TTL logic to early LSI chips (e.g., 2102 RAM, 74181 ALU) with marginal input thresholds. IC Role / Device Role / Timing Role: Active-level translator and current booster ensuring clean logic transitions at LSI inputs. Use Value: Guarantees VIH/VIL margins exceed 0.4 V at destination inputs, reducing metastability risk in synchronous designs. |
Use Scenario: Replacing failed drivers on vintage industrial controller backplanes (e.g., Modicon, DEC PDP-11 I/O cards). IC Role / Device Role / Timing Role: Drop-in replacement for obsolete 74S1004 or 74AS04 variants in field-repair scenarios. Use Value: Matches pinout, timing, and drive strength of legacy AS-family parts - no PCB modification required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AS04N | Same AS process, but 6-channel non-inverting buffer (Y = A); identical drive (±48 mA), timing (1–4 ns), and package. | No logic inversion - requires upstream inversion or redesign if system relies on Y = A̅ function. | Select only when circuit logic flow permits non-inverting behavior; otherwise, SN74AS1004ANS remains functionally unique. |
| SN74ALS1004N | Lower drive (±24 mA), slower delay (1–7 ns), same pinout and function; ALS family, not AS. | Insufficient for >10 TTL loads or >50 pF; suitable only for light-load, lower-speed upgrades where power is constrained. | Choose for cost-sensitive, low-power retrofits where full AS drive is unnecessary; verify load timing margins before substitution. |
Compared with SN74AS04N and SN74ALS1004N, SN74AS1004ANS uniquely combines true inverting logic, maximum AS-family drive strength, and sub-5 ns timing - making it irreplaceable in high-fanout, inversion-required, or legacy-timing-critical designs.
Availability
SN74AS1004ANS is available at Aetrix Electronics and suitable for memory subsystem design, industrial controller refurbishment, legacy bus interface development, and educational retro-computing projects requiring stable component supply and long-term obsolescence support.
Supply support for SN74AS1004ANS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a U.S.-based semiconductor innovator founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74AS1004ANS belongs to TI's 74AS logic family - engineered for high-speed, high-drive digital interfacing in systems where legacy TTL compatibility and robust signal integrity are mandatory.
FAQ
What is the logic function of SN74AS1004ANS?
The SN74AS1004ANS implements six independent inverting drivers: each performs Y = A̅. It does not include enable, 3-state, or open-collector functionality - all outputs are active-high/low totem-pole. This function is explicitly defined in the SDAS074B datasheet function table and logic diagram, and confirmed across all package variants including SN74AS1004ANS.
Does SN74AS1004ANS support 3-state or tri-state operation?
No, SN74AS1004ANS does not support 3-state operation. It is a fixed-output, non-tri-state hex inverter with totem-pole outputs only. The datasheet contains no enable pin, no high-impedance state specification, and no "Z" output condition in its function table - confirming SN74AS1004ANS operates exclusively in active-drive mode.
What is the maximum capacitive load SN74AS1004ANS can drive while maintaining specified timing?
SN74AS1004ANS is characterized for CL = 50 pF with RL = 500 Ω, delivering tPLH/tPHL ≤ 4 ns across 0°C to 70°C. Driving >50 pF increases delay nonlinearly and may cause overshoot; TI recommends limiting total load to ≤50 pF unless derated via empirical validation. This value is measured and guaranteed per SDAS074B switching characteristics table.
Is SN74AS1004ANS pin-compatible with SN74ALS1004N?
Yes, SN74AS1004ANS and SN74ALS1004N share identical 14-pin PDIP (N) package, pinout, and logic function (six inverters). However, SN74AS1004ANS delivers double the output current (48 mA vs. 24 mA) and faster timing (1–4 ns vs. 1–7 ns), so direct substitution is electrically safe but may require layout review for thermal and noise implications.
What is the recommended decoupling for SN74AS1004ANS?
Texas Instruments specifies a 0.1 µF ceramic capacitor placed as close as possible between VCC (pin 14) and GND (pin 7) for each SN74AS1004ANS device. This is required to suppress supply transients caused by simultaneous switching of all six outputs - a condition explicitly addressed in the SDAS074B application guidance and absolute maximum ratings section.
SN74AS1004ANS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Schmitt Trigger Input:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74AS1004ANS FAQ
1.How can I place an order for SN74AS1004ANS through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AS1004ANS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74AS1004ANS reliable?
The price and inventory of SN74AS1004ANS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AS1004ANS is usually 5 days.
3.What payment methods are accepted for SN74AS1004ANS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AS1004ANS transactions.
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4.How is shipping managed for SN74AS1004ANS?
SN74AS1004ANS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AS1004ANS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74AS1004ANS?
For technical support, including SN74AS1004ANS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AS1004ANS requirements.
6.How does Aetrix verify that SN74AS1004ANS is sourced from the original manufacturer or authorized distributors?
All SN74AS1004ANS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74AS1004ANS meets industry standards.
7.What is the process for return or replacement of SN74AS1004ANS?
All SN74AS1004ANS units undergo pre-shipment inspection (PSI). If there is an issue with SN74AS1004ANS, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74AS1004ANS part is unused and in its original packaging.
Return procedure for SN74AS1004ANS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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