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onsemi DM74AS1032AN
- Part No.:
- DM74AS1032AN
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
DM74AS1032AN.pdf
- Description:
- IC GATE OR 4CH 2-INP 14MDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,777
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Product details
Overview
DM74AS1032AN from Fairchild Semiconductor is a quadruple 2-input OR driver IC in a 14-lead PDIP package, delivering ±48 mA output drive, 1–6.3 ns propagation delay (CL = 50 pF), and guaranteed operation from 0°C to +70°C at VCC = 4.5–5.5 V. It drives high-capacitive loads in TTL-compatible logic interfaces.
For engineers reviewing the DM74AS1032AN datasheet, pinout, applications, or equivalent options, key selection criteria include output drive strength, propagation delay under 50 pF load, input voltage thresholds (VIL = 0.8 V, VIH = 2.0 V), and compatibility with legacy 5 V TTL systems.
Technical Context
This device implements four independent 2-input OR gates using advanced oxide-isolated, ion-implanted Schottky TTL technology. Each gate provides symmetrical sourcing and sinking capability (IOH = −48 mA, IOL = 48 mA) and meets switching specifications across full temperature and supply voltage ranges.
The logic function Y = A + B is implemented with guaranteed noise margins: VIL = 0.8 V (max), VIH = 2.0 V (min), VOH ≥ 2.4 V (at IOH = −3 mA), VOL ≤ 0.5 V (at IOL = max). Input clamp voltage is −1.2 V, supporting robust transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures stable operation in standard 5 V TTL power domains |
| Output Drive | ±48 mA - enables direct driving of multiple TTL inputs or moderate capacitive loads (≤50 pF) |
| tPLH / tPHL | 1–6.3 ns - supports high-speed logic interfacing up to ~150 MHz toggle rate under specified load |
| VIL / VIH | 0.8 V / 2.0 V - provides 0.4 V noise margin for reliable signal discrimination in noisy industrial environments |
| Operating Temp | 0°C to +70°C - qualified for commercial-grade embedded control and instrumentation applications |
| IOH / IOL | −48 mA / +48 mA - symmetric drive supports bidirectional bus termination and active pull-up/down |
Pinout & Package
DM74AS1032AN is housed in a 14-lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" wide, with through-hole mounting and standard 0.1" pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A/B per gate) | Eight total inputs assigned to four OR gates: Gate 1 (1,2→3), Gate 2 (4,5→6), Gate 3 (8,9→10), Gate 4 (11,12→13) |
| 3, 6, 10, 13 | Output (Y per gate) | Four independent OR outputs - each capable of sourcing/sinking 48 mA without external buffers |
| 7 | GND | Ground reference for all logic and output stages - must be low-impedance connection to minimize ground bounce |
| 14 | VCC | +5 V supply - decoupling capacitor (0.1 µF ceramic) required within 1 cm of this pin for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Quadruple 2-input OR logic | Four fully isolated gates on one chip - reduces board space vs discrete gate arrays and simplifies routing |
| High-output drive (±48 mA) | Drives up to 10 standard TTL loads directly - eliminates need for external buffer stages in fanout-critical paths |
| Guaranteed switching at 50 pF | Validated timing performance with realistic capacitive loading - avoids timing uncertainty in PCB trace- or connector-loaded designs |
| Full temp/voltage spec coverage | Parameters guaranteed over 0°C–70°C and VCC = 4.5–5.5 V - supports drop-in use in unregulated or thermally variable environments |
| Oxide-isolated Schottky TTL | Combines speed of Schottky clamping with latch-up immunity - improves reliability in mixed-signal systems |
Applications
| Industrial Control Logic | Legacy System Bus Interface |
|---|---|
Use Scenario: Combining status signals from multiple sensors (e.g., limit switches, pressure thresholds) into a single fault-aggregation line for PLC input. IC Role / Device Role / Timing Role: OR gate performing real-time logical summation with sub-7 ns latency - no added clock domain or software overhead. Use Value: Enables hardware-level fault detection with deterministic response time, eliminating microcontroller polling delays. | Use Scenario: Level-shifting and fanout buffering between older 5 V TTL backplane buses and newer peripheral cards with marginal input drive requirements. IC Role / Device Role / Timing Role: Bidirectional signal conditioner providing 48 mA drive and TTL-compatible thresholds - maintains signal integrity across long traces. Use Value: Restores noise margin and rise/fall times degraded by cable capacitance or multiple stubs, extending legacy system lifespan. |
| Test Equipment Signal Routing | Power Supply Sequencing Monitor |
Use Scenario: Merging pass/fail outputs from parallel functional test channels into a unified go/no-go indicator for automated test handlers. IC Role / Device Role / Timing Role: High-speed combinatorial logic element with guaranteed 6.3 ns max delay - synchronizes decision logic with tester clock edges. Use Value: Ensures deterministic test result aggregation without introducing timing skew that could mask intermittent faults. | Use Scenario: Monitoring individual rail-ready signals (e.g., +12 V OK, +5 V OK, +3.3 V OK) to generate a global "Power Good" assertion for FPGA configuration. IC Role / Device Role / Timing Role: Active-low OR gate (via inverted inputs) generating early power-fail warning before brownout thresholds are crossed. Use Value: Provides hardware-based sequencing assurance with no firmware dependency - critical for safe cold-start initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OR gate logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AS1032N | Same logic function, pinout, and DC specs; TI version uses different process but matches tPLH/tPHL (1–6.3 ns) and drive (±48 mA) | Identical use in 5 V TTL systems; minor variation in θJA (75°C/W vs 76°C/W) | Select when requiring TI-qualified supply chain or dual-sourcing for long-life industrial programs |
| 74F1032PC | Fast TTL variant: higher speed (tPLH/tPHL = 0.8–4.5 ns) but lower drive (±20 mA); VIL/VIH tighter (0.8 V/2.0 V same) | Better for ultra-high-speed interconnects with low capacitive load; unsuitable for driving >5 TTL loads | Choose only when propagation delay <5 ns is mandatory and output loading is light (≤20 pF) |
Compared with SN74AS1032N and 74F1032PC, DM74AS1032AN offers balanced speed-drive trade-off ideal for general-purpose 5 V TTL fanout expansion, whereas SN74AS1032N enables second-source procurement and 74F1032PC sacrifices drive for raw speed in low-load contexts.
Availability
DM74AS1032AN is available at Aetrix Electronics and suitable for industrial control logic, legacy system bus interface, test equipment signal routing, and power supply sequencing monitor applications requiring stable component supply and long-term obsolescence management.
Supply support for DM74AS1032AN 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 U.S.-based designer of high-performance analog and logic ICs, acquired by ON Semiconductor in 2016; its legacy TTL and AS-family products remain widely deployed in industrial and aerospace systems.
The DM74AS1032AN belongs to Fairchild's Advanced Schottky (AS) TTL logic family, engineered for high-speed, high-drive 5 V digital interfacing in mission-critical and long-lifecycle equipment where reliability and timing predictability are essential.
FAQ
What logic function does the DM74AS1032AN implement?
The DM74AS1032AN implements four independent 2-input OR logic functions (Y = A + B) in a single 14-pin PDIP package. Each gate operates with TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V) and delivers symmetrical ±48 mA output drive, making DM74AS1032AN suitable for aggregating status signals or driving multiple downstream loads without external buffers.
Is the DM74AS1032AN compatible with standard 5 V TTL systems?
Yes, DM74AS1032AN is fully compatible with standard 5 V TTL systems. Its VCC range (4.5–5.5 V), input voltage thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V), and output voltage levels (VOH ≥ 2.4 V, VOL ≤ 0.5 V) meet or exceed classic TTL specifications. The DM74AS1032AN also guarantees switching performance at 50 pF load - matching typical TTL bus loading conditions.
What is the maximum operating temperature range for the DM74AS1032AN?
The DM74AS1032AN is rated for operation from 0°C to +70°C ambient temperature, as specified in its Recommended Operating Conditions. This commercial-grade temperature range is validated across all electrical parameters including propagation delay, output drive, and supply current. The DM74AS1032AN's thermal resistance (θJA = 76.0°C/W) supports reliable operation in ventilated enclosures without forced cooling.
Does the DM74AS1032AN require external decoupling capacitors?
Yes, DM74AS1032AN requires a 0.1 µF ceramic decoupling capacitor placed as close as possible (within 1 cm) to the VCC (pin 14) and GND (pin 7) pins. This minimizes high-frequency supply noise and prevents output instability during fast transitions. Without proper decoupling, the DM74AS1032AN may exhibit increased propagation delay variation or false triggering under heavy capacitive load switching.
Can the DM74AS1032AN drive multiple TTL inputs directly?
Yes, DM74AS1032AN can drive up to 10 standard TTL inputs directly due to its ±48 mA output drive capability. Standard TTL loads draw ~1.6 mA per input (IIL = −1.6 mA), so the DM74AS1032AN's 48 mA sink current comfortably supports this fanout. This eliminates the need for additional buffer stages in most legacy TTL designs, preserving signal integrity and reducing component count.
DM74AS1032AN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AS
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- OR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- 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:
- 6.3ns @ 5V, 50pF
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-MDIP
DM74AS1032AN FAQ
1.How can I place an order for DM74AS1032AN through Aetrix?
Please submit a Request for Quotation (RFQ) for DM74AS1032AN 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 DM74AS1032AN reliable?
The price and inventory of DM74AS1032AN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM74AS1032AN is usually 5 days.
3.What payment methods are accepted for DM74AS1032AN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM74AS1032AN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM74AS1032AN?
DM74AS1032AN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM74AS1032AN 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 DM74AS1032AN?
For technical support, including DM74AS1032AN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM74AS1032AN requirements.
6.How does Aetrix verify that DM74AS1032AN is sourced from the original manufacturer or authorized distributors?
All DM74AS1032AN 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 DM74AS1032AN meets industry standards.
7.What is the process for return or replacement of DM74AS1032AN?
All DM74AS1032AN units undergo pre-shipment inspection (PSI). If there is an issue with DM74AS1032AN, 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 DM74AS1032AN part is unused and in its original packaging.
Return procedure for DM74AS1032AN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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