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onsemi DM74AS1004AM
- Part No.:
- DM74AS1004AM
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DM74AS1004AM.pdf
- Description:
- IC INVERTER 6CH 1-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,385
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Product details
Overview
DM74AS1004AM from Fairchild Semiconductor is a hex inverting driver IC containing six independent 2-input inverters with enhanced output drive capability (±48 mA), designed for high-capacitive-load interfacing in TTL-based digital systems operating at VCC = 4.5–5.5 V and 0°C to +70°C. It delivers sub-4 ns propagation delay (tPLH/tPHL) at 50 pF load and supports robust noise immunity via guaranteed VIH ≥ 2.0 V and VIL ≤ 0.8 V.
For engineers reviewing the DM74AS1004AM datasheet, pinout, applications, or equivalent options, key selection criteria include its SOIC-14 package, Schottky TTL process, ±48 mA output drive, 1–4 ns switching performance, and compatibility with legacy 74AS logic families in bus buffering and level translation roles.
Technical Context
The DM74AS1004AM implements six identical inverting buffer stages using oxide-isolated, ion-implanted Schottky TTL technology, enabling fast edge rates and stable operation across full industrial temperature and supply voltage ranges. Each stage provides true logic inversion with symmetrical sourcing/sinking current capability.
It operates strictly within TTL-compatible voltage thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and requires no external biasing or termination. Its output drive strength (IOH = −48 mA, IOL = 48 mA) exceeds standard 74AS04, allowing direct interface to transmission lines, capacitive buses, or multiple gate inputs without external buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures compatibility with regulated 5 V TTL power rails and tolerance to supply ripple. |
| IOH / IOL | −48 mA / 48 mA - Supports driving ≥10 standard TTL loads or ≥50 pF capacitive loads without signal degradation. |
| tPLH / tPHL | 1 ns (min) to 4 ns (max) at RL = 500 Ω, CL = 50 pF - Enables reliable operation in >200 MHz clock distribution paths. |
| VIH / VIL | ≥2.0 V / ≤0.8 V - Guarantees noise margins >0.4 V under worst-case VCC and temperature conditions. |
| Operating Temp | 0°C to +70°C - Qualified for commercial-grade embedded control, instrumentation, and industrial logic subsystems. |
| ICC (Outputs HIGH) | 3.2–5.0 mA - Low quiescent power per inverter (≤0.8 mW/inverter @ 5 V), reducing thermal load in dense layouts. |
Pinout & Package
DM74AS1004AM is housed in a 14-lead Small Outline Integrated Circuit (SOIC) package per JEDEC MS-012, 0.150" narrow body, with standard 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | Independent TTL-compatible logic inputs for each of six inverting drivers. |
| 2, 4, 6, 10, 12, 14 | Output (Y1–Y6) | Active-low buffered outputs with ±48 mA drive; each mirrors inverted input state. |
| 7 | GND | Power return reference for all logic and output stages; must be low-impedance connection. |
| 14 | VCC | Positive supply terminal (4.5–5.5 V); decoupling capacitor (0.1 µF) required adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Hex inverting driver architecture | Six isolated inverters in one SOIC-14 package reduce board space vs. discrete 74AS04 + external fanout buffers. |
| Guaranteed switching at 50 pF | Validated timing performance into real-world capacitive loads (e.g., PCB traces, connector stubs, input capacitance). |
| Full-range temperature/voltage specs | All electrical parameters tested and guaranteed from 0°C to +70°C and VCC = 4.5–5.5 V - no derating needed. |
| Oxide-isolated Schottky TTL process | Enables high-speed operation with low saturation voltage and immunity to latch-up in mixed-signal environments. |
Applications
| Bus Interface Buffering | Digital Signal Level Translation |
|---|---|
Use Scenario: Driving long parallel data buses (e.g., 8-bit address/data lines) between microcontroller and peripheral ICs where trace capacitance exceeds 30 pF. IC Role / Device Role / Timing Role: Inverting buffer providing gain, isolation, and capacitive drive strength to maintain signal integrity and timing margins. Use Value: Eliminates need for multiple discrete buffers; enables clean 0–5 V transitions at >100 MHz edge rates across 15 cm FR-4 traces. | Use Scenario: Interfacing 3.3 V FPGA I/O to legacy 5 V TTL peripherals requiring inverted control signals (e.g., chip select, write enable). IC Role / Device Role / Timing Role: Logic-level shifter with inversion function, leveraging TTL input thresholds and 5 V output swing. Use Value: No external resistors or level-shifting ICs required; maintains sub-4 ns propagation delay while ensuring safe 5 V output compliance. |
| High-Speed Clock Distribution | Industrial Control Signal Conditioning |
Use Scenario: Fanout and inversion of system clock signals to multiple synchronous logic blocks (e.g., counters, shift registers) in test equipment. IC Role / Device Role / Timing Role: Low-skew inverting driver ensuring matched tPLH/tPHL for balanced duty cycle preservation. Use Value: Delivers <0.5 ns skew between outputs, supporting stable 250 MHz clock domains without added jitter. | Use Scenario: Conditioning noisy sensor interrupt lines (e.g., from mechanical limit switches) before feeding into microcontroller GPIOs. IC Role / Device Role / Timing Role: Debounced inverter with strong drive to override contact bounce and EMI-induced glitches. Use Value: 48 mA sink capability clamps transients; guaranteed VIL/VIH ensures reliable detection even with ±1 V noise on input lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inverting driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AS1004N | Same logic function and DC specs, but in PDIP-14 (N14A) package; θJA = 76°C/W vs. 106°C/W for DM74AS1004AM. | Better thermal performance in through-hole prototyping or low-density boards; not surface-mount compatible. | Select when manual assembly, breadboarding, or thermal headroom >20°C above ambient is required. |
| 74ACT14PC | CMOS-based hex Schmitt-trigger inverter; different input threshold (Vih ≈ 3.5 V), lower ICC (<2 µA), but only ±24 mA drive. | Superior noise immunity on slow-rising signals; unsuitable for driving >25 pF or TTL loads directly. | Select for low-power, noise-prone environments with clean 5 V CMOS signaling - not a drop-in replacement. |
Compared with SN74AS1004N and 74ACT14PC, the DM74AS1004AM uniquely balances high-speed TTL compatibility, SOIC-14 surface-mount integration, and robust ±48 mA drive - making it optimal for space-constrained, high-fanout digital interfaces where legacy timing and voltage levels must be preserved.
Availability
DM74AS1004AM is available at Aetrix Electronics and suitable for bus buffering, clock distribution, level translation, and industrial control signal conditioning requiring stable component supply and long-term obsolescence management.
Supply support for DM74AS1004AM 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
Fairchild Semiconductor was a leading designer of high-performance analog and logic ICs, acquired by ON Semiconductor in 2016; its legacy 74AS logic family remains widely supported for industrial and military-grade designs.
The DM74AS1004AM belongs to the advanced Schottky TTL logic product line, engineered specifically for high-speed, high-drive digital interfacing in commercial and industrial systems where reliability across temperature and voltage extremes is critical.
FAQ
What logic family and process technology does the DM74AS1004AM use?
The DM74AS1004AM uses advanced oxide-isolated, ion-implanted Schottky TTL technology - a high-speed variant of bipolar TTL that minimizes storage time and improves switching speed over standard TTL. It is fully compatible with the 74AS logic family, featuring guaranteed AC and DC specifications across the full 0°C to +70°C range and 4.5–5.5 V supply.
Can the DM74AS1004AM drive multiple 74LS inputs reliably?
Yes, the DM74AS1004AM can drive up to 10 standard 74LS inputs per output due to its ±48 mA output drive capability and TTL-compatible voltage thresholds. Its guaranteed IOL = 48 mA exceeds the 8 mA total sink requirement of ten 74LS gates, ensuring valid LOW-level output voltage (VOL ≤ 0.5 V) even under worst-case loading and temperature conditions.
Is the DM74AS1004AM pin-compatible with the DM74AS04?
No, the DM74AS1004AM is not pin-compatible with the DM74AS04. While both are hex inverters, the DM74AS1004AM has 14 pins with dedicated inputs and outputs on alternating pins (1–2, 3–4, etc.), whereas the DM74AS04 uses a different pinout (e.g., inputs on odd pins, outputs on even pins but with shared GND/VCC placement). Always verify against the official DM74AS1004AM connection diagram before PCB layout.
What is the maximum capacitive load the DM74AS1004AM can drive while maintaining specified timing?
The DM74AS1004AM's switching characteristics are explicitly guaranteed at CL = 50 pF, with tPLH/tPHL specified from 1 ns (min) to 4 ns (max) under those conditions. Driving loads beyond 50 pF will increase propagation delay nonlinearly; for >50 pF applications, empirical validation or derating per the device's output impedance profile is recommended.
Does the DM74AS1004AM support operation at 3.3 V supply?
No, the DM74AS1004AM is not rated for 3.3 V operation. Its absolute maximum VCC is 7 V, but the recommended operating range is strictly 4.5–5.5 V. At 3.3 V, VIH and VOH thresholds fall outside specification, resulting in unreliable HIGH-level recognition and marginal output swing - use 74LVC or 74AHC series for 3.3 V logic systems instead.
DM74AS1004AM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AS
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bag
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- 48mA, 48mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 4ns @ 5V, 50pF
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
DM74AS1004AM FAQ
1.How can I place an order for DM74AS1004AM through Aetrix?
Please submit a Request for Quotation (RFQ) for DM74AS1004AM 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 DM74AS1004AM reliable?
The price and inventory of DM74AS1004AM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM74AS1004AM is usually 5 days.
3.What payment methods are accepted for DM74AS1004AM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM74AS1004AM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM74AS1004AM?
DM74AS1004AM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM74AS1004AM 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 DM74AS1004AM?
For technical support, including DM74AS1004AM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM74AS1004AM requirements.
6.How does Aetrix verify that DM74AS1004AM is sourced from the original manufacturer or authorized distributors?
All DM74AS1004AM 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 DM74AS1004AM meets industry standards.
7.What is the process for return or replacement of DM74AS1004AM?
All DM74AS1004AM units undergo pre-shipment inspection (PSI). If there is an issue with DM74AS1004AM, 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 DM74AS1004AM part is unused and in its original packaging.
Return procedure for DM74AS1004AM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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