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Texas Instruments SN74AS1034AD
- Part No.:
- SN74AS1034AD
- Manufacturer:
- Texas Instruments
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74AS1034AD.pdf
- Description:
- IC BUF NON-INVERT 5.5V 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:331
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Product details
Overview
SN74AS1034AD from Texas Instruments is a hex noninverting buffer IC designed for high-capacitive-load driving in TTL-compatible digital systems. It delivers ±48 mA output drive, 6 ns typical propagation delay (tPLH/tPHL), and operates across 0°C to 70°C with 4.5–5.5 V supply. Used in bus buffering, line driving, and logic-level translation in industrial control backplanes.
For engineers reviewing the SN74AS1034AD datasheet, SN74AS1034AD pinout, SN74AS1034AD application, or SN74AS1034AD equivalent, this page provides verified functional identity, SOIC-14 package mapping, confirmed DC/AC electrical specs, and two validated alternative parts for legacy system support and obsolescence mitigation.
Technical Context
The SN74AS1034AD implements six independent totem-pole output buffers performing Y = A logic with no internal 3-state control. Its AS-family silicon enables higher sink/source current than ALS variants while maintaining TTL input thresholds (VIL = 0.8 V, VIH = 2 V) and compatible voltage levels (VOH ≥ 2 V at IOL = 48 mA, VOL ≤ 0.5 V).
Designed for capacitive-load resilience, it sustains stable operation into >50 pF loads at up to 40 MHz-though not recommended above that frequency per TI's guidance. Propagation delay is tightly specified (1–6 ns min–max) under 50 pF/500 Ω test conditions, confirming suitability for timing-critical signal fanout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Six independent noninverting buffers (Y = A); no 3-state capability |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard TTL VCC rails; absolute max 7 V |
| Output Drive (IOL / IOH) | 48 mA sink / 48 mA source - enables direct driving of 10+ TTL loads or 50 pF traces |
| Propagation Delay | 1–6 ns (tPLH/tPHL, CL = 50 pF) - supports <40 MHz clock distribution without skew accumulation |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - fully compatible with standard TTL logic families |
| Operating Temperature | 0°C to 70°C - commercial-grade rating; matches SN74AS1034A specification |
| Package Type | SOIC-14 (D package), 3.9 mm width, 1.75 mm max height - surface-mount compatible with IPC-7351 land patterns |
Pinout & Package
SN74AS1034AD uses a 14-pin Small Outline Integrated Circuit (SOIC-D) package with standard 1.27 mm pitch and 3.9 mm body width. Pin 1 is marked by a beveled corner or notch on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (1A–6A) | Independent TTL-compatible logic inputs; each drives one buffer stage |
| 2, 4, 6, 8, 10, 12 | Output (1Y–6Y) | Active totem-pole outputs; capable of ±48 mA continuous drive per channel |
| 7 | GND | Power return reference for all inputs, outputs, and internal circuitry |
| 14 | VCC | Positive supply rail (4.5–5.5 V); decoupling required within 1 cm of pin |
Key Features
| Feature | Design Value |
|---|---|
| High-output-current drive | ±48 mA per buffer - eliminates need for external driver stages in high-fanout buses |
| TTL-compatible input thresholds | VIL = 0.8 V, VIH = 2.0 V - ensures interoperability with 74LS, 74ALS, and legacy microcontroller GPIO |
| Low propagation delay variation | 1–6 ns range (min–max) - minimizes inter-channel skew in parallel data paths |
| Capacitive-load robustness | Specified at CL = 50 pF - supports reliable signal integrity on long PCB traces or ribbon cables |
| Commercial temperature grade | 0°C to 70°C operation - optimized for industrial control panels and instrumentation enclosures |
Applications
| Industrial Backplane Buffering | Legacy Microprocessor Bus Driver |
|---|---|
Use Scenario: Driving address/data lines across 20 cm of 50 Ω PCB trace in a modular PLC rack with 12-slot backplane. IC Role / Device Role / Timing Role: Noninverting buffer replicating CPU signals to multiple I/O modules while maintaining edge integrity and noise margin. Use Value: ±48 mA drive ensures full logic swing into 50 pF + 100 Ω load; 6 ns delay preserves setup/hold timing across slots. |
Use Scenario: Interfacing Z80 or 8085 CPU data bus to peripheral ASICs requiring higher current than onboard drivers provide. IC Role / Device Role / Timing Role: Level-shifting and fanout amplifier between microprocessor D0–D7 and multi-chip peripheral subsystems. Use Value: TTL-compatible thresholds accept native CPU outputs; low skew enables synchronous 4 MHz bus cycles. |
| Test Equipment Signal Fanout | Automated Test Fixture Interface |
Use Scenario: Distributing pattern generator clock and strobe signals to 8 DUT sites on a bed-of-nails tester. IC Role / Device Role / Timing Role: Clock and control signal repeater ensuring simultaneous edge delivery across all channels. Use Value: 1 ns min delay and tight 5 ns max variation prevent channel-to-channel timing skew beyond ±0.5 ns. |
Use Scenario: Isolating and strengthening GPIB (IEEE-488) handshaking lines (DAV, NRFD, NDAC) in production test fixtures. IC Role / Device Role / Timing Role: Robust line driver compensating for cable capacitance and contact resistance degradation over 10,000+ cycles. Use Value: High current drive maintains >0.8 V noise margin even after 5000 mating cycles; SOIC package enables compact fixture layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AS1034ADR | Same die, active SOIC-14 tape-and-reel variant; identical electrical specs and timing | Direct replacement with guaranteed availability and RoHS compliance (NIPDAU finish, MSL-1) | Select when new production requires qualified, in-stock supply with full traceability and reflow compatibility |
| SN74ALS1034DR | Lower drive (±24 mA), slower delay (1–8 ns), same pinout and logic function | Acceptable where fanout ≤ 5 TTL loads or CL ≤ 30 pF; lower power (ICCL = 8–14 mA vs. 21–35 mA) | Choose for cost-sensitive or lower-speed legacy upgrades where SN74AS1034AD's drive headroom is unnecessary |
Compared with SN74AS1034ADR, the SN74AS1034AD shares identical functionality but is obsolete-making the ADR version the preferred path for new designs. Against SN74ALS1034DR, the AS variant trades higher ICC for critical drive strength and speed, justifying its use in high-noise, high-capacitance environments.
Availability
SN74AS1034AD is available at Aetrix Electronics and suitable for industrial backplane buffering, legacy microprocessor bus expansion, test equipment signal fanout, and automated test fixture interface requiring stable component supply despite end-of-life status.
Supply support for SN74AS1034AD 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 global semiconductor leader founded in 1930, specializing in analog, embedded processing, and logic solutions with broad industrial, automotive, and communications reach.
The SN74AS1034AD belongs to TI's 74AS logic family-engineered for high-speed, high-drive TTL-compatible interfacing in demanding industrial and instrumentation systems where reliability and signal fidelity are critical.
FAQ
What is the exact logic function and channel count of the SN74AS1034AD?
The SN74AS1034AD contains six independent noninverting buffer circuits, each implementing the Boolean function Y = A. There is no 3-state control or enable logic-every input directly controls its corresponding output. All six channels operate simultaneously with identical electrical characteristics, as confirmed in the SDAS053B datasheet function table and logic diagram.
Is SN74AS1034AD pin-compatible with SN74ALS1034DR or other 74xx1034 variants?
Yes, SN74AS1034AD is pin-compatible with SN74ALS1034DR, SN74ALS1034N, and SN74AS1034AN-all share identical 14-pin DIP/SOIC pinouts (1A–6A, 1Y–6Y, GND, VCC). The pin numbering and terminal roles match exactly across these variants, enabling direct PCB substitution where electrical requirements permit.
What are the absolute maximum ratings for SN74AS1034AD?
The absolute maximum ratings for SN74AS1034AD are: supply voltage (VCC) up to 7 V, input voltage (VI) up to 7 V, and operating free-air temperature from 0°C to 70°C. Storage temperature range is −65°C to 150°C. Exceeding any absolute maximum rating may cause permanent device damage, per SDAS053B Section 3.
Does SN74AS1034AD support 3-state or tri-state output operation?
No, SN74AS1034AD does not support 3-state operation. It features only totem-pole outputs with no output-enable (OE) pin or internal 3-state logic. Each buffer output is always driven high or low based solely on its input state-confirmed by the absence of OE terminals in the pinout diagram and function table of the SN74AS1034AD datasheet.
What is the recommended operating condition for output loading on SN74AS1034AD?
TI specifies SN74AS1034AD switching characteristics at CL = 50 pF and RL = 500 Ω, with propagation delay tested under those conditions. While the device can drive heavier loads, sustained operation into >50 pF may increase delay and reduce noise margin. For reliable 40 MHz operation, keep total load ≤50 pF per output, as noted in the "recommended operating conditions" footnote of SDAS053B.
SN74AS1034AD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AS
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 6
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Logic
- Current - Output High, Low:
- 48mA, 48mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
SN74AS1034AD FAQ
1.How can I place an order for SN74AS1034AD through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AS1034AD 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 SN74AS1034AD reliable?
The price and inventory of SN74AS1034AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AS1034AD is usually 5 days.
3.What payment methods are accepted for SN74AS1034AD?
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4.How is shipping managed for SN74AS1034AD?
SN74AS1034AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AS1034AD 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 SN74AS1034AD?
For technical support, including SN74AS1034AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AS1034AD requirements.
6.How does Aetrix verify that SN74AS1034AD is sourced from the original manufacturer or authorized distributors?
All SN74AS1034AD 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 SN74AS1034AD meets industry standards.
7.What is the process for return or replacement of SN74AS1034AD?
All SN74AS1034AD units undergo pre-shipment inspection (PSI). If there is an issue with SN74AS1034AD, 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 SN74AS1034AD part is unused and in its original packaging.
Return procedure for SN74AS1034AD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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