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Texas Instruments SN74ALS760DWRG4
- Part No.:
- SN74ALS760DWRG4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74ALS760DWRG4.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,849
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Product details
Overview
SN74ALS760DWRG4 from Texas Instruments is a dual 4-bit non-inverting open-collector buffer/line driver IC designed for memory address bus driving and clock distribution in TTL-compatible systems. It features two independent 4-bit channels, pnp input structure for reduced DC loading, and operates across 0°C to 70°C with 4.5 V–5.5 V supply. Its open-collector outputs drive bus lines or buffer memory address registers without requiring 3-state overlap protection.
For engineers reviewing the SN74ALS760DWRG4 datasheet, SN74ALS760DWRG4 pinout, SN74ALS760DWRG4 application, or SN74ALS760DWRG4 equivalent, key selection criteria include its 24 mA low-level output current capability, 5 ns minimum propagation delay (tPLH/tPHL), open-collector output architecture, pnp input stage, and SOIC-20 (DW) package compatibility with industrial-grade thermal range.
Technical Context
The SN74ALS760DWRG4 implements two independent 4-bit non-inverting buffer sections, each with active-low output-enable (OE) control. Its pnp input structure lowers input current draw versus standard TTL, reducing system DC loading on upstream drivers. The open-collector outputs support wired-AND logic and bus termination via external pull-ups.
Each channel accepts four parallel inputs (A1–A4) and drives corresponding outputs (Y1–Y4), with separate 1OE and 2OE controls enabling independent channel gating. Propagation delays are specified from A or OE to Y under 50 pF capacitive load and 500 Ω pull-up, supporting high-speed address buffering in legacy computing and industrial control backplanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL systems while tolerating rail variation. |
| Low-Level Output Current | 24 mA - Supports direct driving of multiple TTL inputs or bus loads without external amplification. |
| Propagation Delay (tPLH/tPHL) | 5 ns to 15 ns - Enables reliable operation in address/data paths up to ~100 MHz clock domains. |
| Input Voltage Thresholds | VIL = 0.8 V, VIH = 2.0 V - Matches standard TTL logic levels for seamless interfacing. |
| Operating Temperature | 0°C to 70°C - Qualified for commercial and industrial ambient environments. |
| Output Structure | Open-collector - Allows wired-AND bus arbitration and flexible pull-up voltage selection (e.g., 3.3 V or 5 V). |
| Input Stage | pnp-based - Reduces input current to ≤0.1 mA, minimizing loading on preceding gate outputs. |
Pinout & Package
SN74ALS760DWRG4 is housed in a 20-pin SOIC (DW) package, 7.5 mm wide, with 1.27 mm pitch and 2.65 mm max height. Pin 1 is marked by a beveled corner or notch; device orientation follows JEDEC MS-013 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low output enable | Disables respective 4-bit channel outputs to high-impedance state; enables concurrent bus sharing. |
| 1A1–1A4, 2A1–2A4 | Buffer inputs | Non-inverting data inputs per channel; accept standard TTL logic levels. |
| 1Y1–1Y4, 2Y1–2Y4 | Open-collector outputs | Drive external pull-up networks; support wired-AND, bus arbitration, and level translation. |
| VCC | Positive supply | Connects to +5 V rail; decoupling capacitor required near pin for noise suppression. |
| GND | Ground reference | Common return path for all internal circuitry and output sink current. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 4-bit non-inverting buffers | Enables independent control of two address or data nibbles with shared or separate OE signals. |
| pnp input structure | Reduces input current to ≤0.1 mA, lowering loading on upstream drivers and improving fan-out. |
| Open-collector outputs | Supports wired-AND bus topologies, mixed-voltage interfacing, and programmable pull-up configurations. |
| No 3-state overlap protection needed | Eliminates timing-critical sequencing between OE signals during bus handoff, simplifying control logic. |
| TTL-compatible thresholds | VIL = 0.8 V / VIH = 2.0 V ensures interoperability with legacy 74LS/74ALS/74AS families without level shifters. |
Applications
| Memory Address Buffering | Bus Line Driving |
|---|---|
|
Use Scenario: Buffering 16-bit address bus signals from microprocessor to multiple memory modules in embedded controllers. IC Role / Device Role: Dual-channel non-inverting buffer isolating CPU address outputs from distributed memory loads. Use Value: 24 mA sink capability per output drives up to 10 standard TTL inputs; open-collector outputs allow shared bus arbitration without contention. |
Use Scenario: Driving a common data/address bus shared among multiple peripherals in an industrial PLC backplane. IC Role / Device Role: Bus line driver with independent OE controls enabling time-multiplexed peripheral access. Use Value: Eliminates need for external 3-state timing coordination; pnp inputs reduce loading on bus transceivers and improve signal integrity. |
| Clock Distribution | Legacy System Interface |
|
Use Scenario: Distributing synchronized clock signals to multiple synchronous logic blocks in test equipment or instrumentation. IC Role / Device Role: Non-inverting clock buffer with low skew and fast propagation (5–15 ns) across both channels. Use Value: Open-collector outputs permit series-terminated clock distribution; tight delay matching minimizes clock skew across destinations. |
Use Scenario: Interfacing modern FPGA I/O banks to legacy TTL-based peripheral cards in retro-computing or avionics upgrades. IC Role / Device Role: Level-shifting and fan-out buffer translating 3.3 V or 5 V FPGA outputs to robust 5 V TTL bus signals. Use Value: Input thresholds and open-collector outputs tolerate mixed-voltage signaling; 0°C–70°C rating supports field-deployed upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer/line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALS244N | Octal non-inverting buffer with 3-state (not open-collector) outputs; identical pinout but different output architecture. | Requires precise OE timing to avoid bus contention; unsuitable for wired-AND or mixed-voltage buses. | Select when 3-state isolation is preferred over open-collector flexibility and bus arbitration is handled externally. |
| SN74AS760DWR | Faster propagation (1–7 ns vs. 5–15 ns) and higher output drive (64 mA vs. 24 mA); same pinout and function. | Higher power consumption (ICC up to 94 mA vs. 19 mA) and stricter layout requirements for signal integrity. | Select for high-speed backplanes where timing margin is critical and thermal/power budgets allow. |
Compared with SN74ALS760DWRG4, SN74ALS244N offers 3-state control but lacks open-collector versatility, while SN74AS760DWR delivers superior speed and drive strength at the cost of increased power and noise sensitivity-making SN74ALS760DWRG4 optimal for balanced performance in legacy TTL bus systems.
Availability
SN74ALS760DWRG4 is available at Aetrix Electronics and suitable for memory address buffering, bus line driving, and clock distribution applications requiring stable component supply, long-term industrial availability, and SOIC-20 footprint compatibility.
Supply support for SN74ALS760DWRG4 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.
SN74ALS760DWRG4 belongs to TI's legacy 74ALS logic family, engineered for high-speed, low-power TTL-compatible interface and bus-driving applications in industrial control, instrumentation, and retro-computing systems.
FAQ
What is the maximum sink current per output of the SN74ALS760DWRG4?
The SN74ALS760DWRG4 supports a guaranteed low-level output current (IOL) of 24 mA per channel under VCC = 4.5 V conditions. This allows direct driving of multiple TTL inputs or termination of standard 50 Ω transmission lines with appropriate pull-up configuration. Exceeding this value risks exceeding absolute maximum ratings and degrading long-term reliability.
Does the SN74ALS760DWRG4 require external pull-up resistors on its outputs?
Yes, the SN74ALS760DWRG4 features open-collector outputs and requires external pull-up resistors to establish high-level logic states. Typical values range from 1 kΩ to 10 kΩ depending on bus capacitance and rise-time requirements. Pull-up voltage may differ from VCC (e.g., 3.3 V) to support mixed-voltage interfacing, as the outputs are not internally clamped.
Can the SN74ALS760DWRG4 replace the SN74ALS244 in existing designs?
The SN74ALS760DWRG4 shares functional similarity with SN74ALS244 but differs critically in output type: SN74ALS760DWRG4 uses open-collector outputs, whereas SN74ALS244 uses 3-state outputs. Direct replacement requires verifying that the target application benefits from wired-AND capability and does not rely on high-impedance tri-state behavior for bus sharing.
What is the operating temperature range of the SN74ALS760DWRG4?
The SN74ALS760DWRG4 is characterized for operation from 0°C to 70°C, meeting commercial and extended industrial ambient requirements. This range is confirmed in the SDAS141A datasheet under "recommended operating conditions" and aligns with its SOIC-20 (DW) packaging and ALS process qualification.
Is the SN74ALS760DWRG4 RoHS compliant?
Yes, the SN74ALS760DWRG4 is RoHS compliant, as confirmed in TI's Package Option Addendum: it carries "Yes" under the RoHS column and uses NiPdAu (NIPDAU) lead finish. The device meets EU Directive 2011/65/EU requirements and is suitable for environmentally regulated production environments.
SN74ALS760DWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALS
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- Open Collector
- Current - Output High, Low:
- -, 24mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74ALS760DWRG4 FAQ
1.How can I place an order for SN74ALS760DWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALS760DWRG4 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 SN74ALS760DWRG4 reliable?
The price and inventory of SN74ALS760DWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALS760DWRG4 is usually 5 days.
3.What payment methods are accepted for SN74ALS760DWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALS760DWRG4 transactions.
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4.How is shipping managed for SN74ALS760DWRG4?
SN74ALS760DWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALS760DWRG4 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 SN74ALS760DWRG4?
For technical support, including SN74ALS760DWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALS760DWRG4 requirements.
6.How does Aetrix verify that SN74ALS760DWRG4 is sourced from the original manufacturer or authorized distributors?
All SN74ALS760DWRG4 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 SN74ALS760DWRG4 meets industry standards.
7.What is the process for return or replacement of SN74ALS760DWRG4?
All SN74ALS760DWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALS760DWRG4, 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 SN74ALS760DWRG4 part is unused and in its original packaging.
Return procedure for SN74ALS760DWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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