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Texas Instruments SN74BCT760DWG4
- Part No.:
- SN74BCT760DWG4
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74BCT760DWG4.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,255
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Product details
Overview
SN74BCT760DWG4 from Texas Instruments is an octal buffer/driver IC with open-collector outputs, organized as two independent 4-bit channels, each with dedicated output-enable (OE) control. It operates at 4.5–5.5 V, supports 64 mA low-level output current, exhibits 6.3–10 ns propagation delay (tPLH), and is rated for 0°C to 70°C operation in SOIC-20 package. It drives bus lines and memory address registers in TTL-compatible systems.
For engineers reviewing the SN74BCT760DWG4 datasheet, SN74BCT760DWG4 pinout, SN74BCT760DWG4 application, or SN74BCT760DWG4 equivalent, key selection criteria include open-collector drive capability, dual 4-bit channel isolation, 20-pin SOIC thermal and layout compatibility, and TTL-level input/output voltage thresholds.
Technical Context
The SN74BCT760DWG4 implements two independent 4-bit non-inverting buffer sections, each with separate OE inputs enabling per-channel 3-state control. Its open-collector outputs allow wired-AND bus interfacing and level translation up to 5.5 V on the output side.
It uses bipolar BCT (Bipolar CMOS-TTL) technology, delivering TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2 V) and guaranteed VOL ≤ 0.55 V at IOL = 64 mA, supporting high-current bus loading without external pull-ups in many configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures stable operation across standard 5 V ±10% rail tolerances. |
| Output Current (IOL) | 64 mA per output - Supports direct driving of multiple TTL loads or termination-resistor networks. |
| Propagation Delay | 6.3–10 ns (tPLH), 2.1–7.2 ns (tPHL) - Enables reliable timing in 25–40 MHz bus clock domains. |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - Fully compatible with standard TTL logic families without level-shifting. |
| Operating Temperature | 0°C to 70°C - Qualified for commercial-grade embedded and industrial control applications. |
| ESD Protection | >2000 V HBM - Meets MIL-STD-883C Method 3015, reducing susceptibility to handling damage. |
| Input/Output Capacitance | Ci = 6 pF, Co = 10 pF - Minimizes capacitive loading on driving sources and downstream nodes. |
Pinout & Package
SN74BCT760DWG4 is housed in a 20-pin SOIC (DW) package, 7.5 mm wide, 2.65 mm max height, with 1.27 mm pitch and RoHS-compliant NiPdAu lead finish. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output-enable inputs (active-low) | Independent enable control per 4-bit section; high = high-Z output state. |
| 1A1–1A4, 2A1–2A4 | Data inputs | Eight TTL-compatible inputs, grouped into two 4-bit channels. |
| 1Y1–1Y4, 2Y1–2Y4 | Open-collector outputs | Eight actively pulled-low outputs; require external pull-up for logic HIGH. |
| VCC (Pin 20) | Positive supply | 5 V nominal power rail; decoupling capacitor required near pin. |
| GND (Pin 10) | Ground reference | Common return path for all inputs, outputs, and internal circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit buffers | Enables isolated control of two memory banks or bus segments using separate OE signals. |
| Open-collector outputs | Permits wired-AND logic, multi-source bus arbitration, and interface to higher-voltage systems (up to 5.5 V). |
| TTL-compatible input thresholds | Accepts standard TTL logic levels directly-no level-shifter needed when driven by 74LS/74F devices. |
| High sink current (64 mA) | Drives up to 20 standard TTL loads or terminates 50 Ω transmission lines without external buffering. |
| Low input capacitance (6 pF) | Reduces switching power and signal distortion when driven by high-impedance sources like microcontroller GPIO. |
Applications
| Memory Address Buffering | Bus Transceiver Interface |
|---|---|
Use Scenario: Driving 16-bit address bus for SRAM or EPROM in 8051-based embedded controller. IC Role / Device Role / Timing Role: Octal buffer translating microcontroller address outputs to memory chip inputs with timing-matched propagation. Use Value: Dual OE control allows interleaved access to two memory banks while maintaining bus integrity and minimizing contention. | Use Scenario: Bidirectional data bus isolation between microprocessor and peripheral ASIC in industrial PLC backplane. IC Role / Device Role / Timing Role: Open-collector driver enabling shared bus arbitration via external pull-up and enable sequencing. Use Value: 64 mA sink current ensures robust low-state drive under heavy capacitive loading (≥100 pF), preventing signal degradation. |
| Legacy System Bus Expansion | TTL-Level Signal Conditioning |
Use Scenario: Adding parallel I/O expansion to vintage 68000-based test equipment using existing 5 V TTL infrastructure. IC Role / Device Role / Timing Role: Level-consistent buffer isolating CPU bus from add-on card logic, preserving setup/hold margins. Use Value: Matched tPLH/tPHL delays (≤10 ns) prevent skew-induced metastability in synchronous address/data transfers. | Use Scenario: Converting noisy or slow-rising signals from mechanical switches or analog comparators into clean TTL logic for FPGA input. IC Role / Device Role / Timing Role: Schmitt-trigger-free but TTL-threshold-compliant input conditioning stage with noise margin ≥0.4 V. Use Value: 2000 V HBM ESD rating protects against field-induced transients during panel integration and maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal open-collector buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LS366N | Lower IOL (24 mA), slower tPLH (25 ns), same SOIC-20 footprint but TTL-only (not BCT) process. | Not suitable for high-current bus termination or >10 MHz timing-critical paths. | Select only if legacy LS-family compatibility and lower power (ICC = 24 mA) outweigh speed/current needs. |
| SN74ACT541DW | 3-state (not open-collector), CMOS input, higher VIH (3.5 V), 24 mA IOL, faster (tPLH = 5.5 ns). | Cannot perform wired-AND or level translation; requires active pull-up for HIGH logic. | Prefer when driving CMOS loads or needing lower ICC (4 µA) and higher noise immunity, not bus arbitration. |
Compared with SN74LS366N and SN74ACT541DW, the SN74BCT760DWG4 uniquely combines TTL-compatible inputs, open-collector flexibility, and 64 mA drive-making it irreplaceable for legacy bus termination and multi-source wired-logic applications where electrical compatibility and sink strength are mandatory.
Availability
SN74BCT760DWG4 is available at Aetrix Electronics and suitable for memory address buffering, industrial bus interfaces, legacy system upgrades, and TTL-level signal conditioning requiring stable component supply and long-term obsolescence management.
Supply support for SN74BCT760DWG4 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 SN74BCT760DWG4 belongs to TI's legacy BCT logic family, designed specifically to enhance density and performance of 3-state memory address drivers, clock distribution networks, and bus-oriented receivers/transmitters in 5 V TTL systems.
FAQ
What is the maximum output sink current specification for SN74BCT760DWG4?
The SN74BCT760DWG4 is specified for 64 mA low-level output current (IOL) per output at VCC = 4.5 V and TA = 25°C. This value is guaranteed across the full commercial temperature range (0°C to 70°C) and enables direct driving of multiple TTL loads or termination resistors without external amplification. The device maintains VOL ≤ 0.55 V under this condition, ensuring robust logic LOW integrity.
Does SN74BCT760DWG4 support 3.3 V logic inputs?
No, SN74BCT760DWG4 does not reliably accept 3.3 V logic inputs. Its input thresholds are TTL-compatible: VIH = 2.0 V minimum and VIL = 0.8 V maximum. While a 3.3 V HIGH may exceed VIH, the device lacks 3.3 V–tolerant input structure and is not characterized for operation with 3.3 V supplies or mixed-voltage signaling. For 3.3 V systems, consider SN74LVC8T245 or similar level-translating buffers instead of SN74BCT760DWG4.
Can SN74BCT760DWG4 be used as a level shifter between 5 V and 12 V buses?
Yes, SN74BCT760DWG4 can interface a 5 V controller to a 12 V bus when configured with an external pull-up resistor to 12 V, because its open-collector outputs tolerate up to 5.5 V in the high state and up to 5.5 V applied voltage in the disabled state. However, the output high voltage will equal the pull-up rail (12 V), and the device itself must still be powered at 4.5–5.5 V. This configuration is valid for SN74BCT760DWG4 only when the 12 V side has no reverse current injection risk.
What is the recommended decoupling for SN74BCT760DWG4 in high-speed applications?
For stable operation above 10 MHz, place a 0.1 µF ceramic capacitor between VCC (Pin 20) and GND (Pin 10) as close as possible to the SN74BCT760DWG4 package body. Add a bulk 4.7 µF tantalum or aluminum electrolytic capacitor within 1 inch of the SOIC-20 footprint. This dual-capacitor strategy suppresses both high-frequency switching noise (from 64 mA IOL transitions) and low-frequency supply droop, ensuring consistent VOL and propagation delay for SN74BCT760DWG4.
Is SN74BCT760DWG4 pin-compatible with SN74BCT760N?
Yes, SN74BCT760DWG4 is pin-compatible with SN74BCT760N. Both share identical 20-pin functional mapping: dual OE inputs, eight A inputs, eight Y outputs, VCC, and GND in the same positions. The only differences are package type (SOIC-20 vs. PDIP-20), thermal characteristics, and moisture sensitivity level-making SN74BCT760DWG4 a direct drop-in replacement on PCBs designed for SN74BCT760N, provided solder profile and board layout accommodate SOIC dimensions.
SN74BCT760DWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74BCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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:
- -, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74BCT760DWG4 FAQ
1.How can I place an order for SN74BCT760DWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74BCT760DWG4 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 SN74BCT760DWG4 reliable?
The price and inventory of SN74BCT760DWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74BCT760DWG4 is usually 5 days.
3.What payment methods are accepted for SN74BCT760DWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74BCT760DWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74BCT760DWG4?
SN74BCT760DWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74BCT760DWG4 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 SN74BCT760DWG4?
For technical support, including SN74BCT760DWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74BCT760DWG4 requirements.
6.How does Aetrix verify that SN74BCT760DWG4 is sourced from the original manufacturer or authorized distributors?
All SN74BCT760DWG4 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 SN74BCT760DWG4 meets industry standards.
7.What is the process for return or replacement of SN74BCT760DWG4?
All SN74BCT760DWG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74BCT760DWG4, 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 SN74BCT760DWG4 part is unused and in its original packaging.
Return procedure for SN74BCT760DWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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