My Inquiry
My Account
Texas Instruments SN74BCT760NSR
- Part No.:
- SN74BCT760NSR
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74BCT760NSR.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,027
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74BCT760NSR 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, delivers 64 mA low-level output current per channel, and supports bus driving and memory address buffering in industrial logic systems.
For engineers reviewing the SN74BCT760NSR datasheet, SN74BCT760NSR pinout, SN74BCT760NSR application, or SN74BCT760NSR equivalent, this page provides verified functional specifications, package mapping to SOIC-20 (DW), validated timing parameters (tPLH/tPHL ≤10 ns), and real-world substitution guidance for legacy TTL-compatible bus interface designs.
Technical Context
The SN74BCT760NSR implements dual 4-bit non-inverting buffers with open-collector outputs and independent OE inputs per group. Each channel passes A-input data to Y-outputs when OE is low; outputs enter high-impedance state when OE is high. It uses bipolar BCT (Bipolar CMOS-TTL) process technology for TTL-compatible input thresholds and improved drive strength over standard TTL.
It meets MIL-STD-883C ESD protection (>2000 V), supports 0°C to 70°C operation, and interfaces directly with 5-V TTL/CMOS logic families. Its open-collector architecture enables wired-AND bus configurations and level translation via external pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL/CMOS systems without regulation overhead. |
| Output Current (IOL) | 64 mA per output - Sufficient to drive multiple TTL loads or terminate stubs on medium-length buses. |
| Propagation Delay | tPLH/tPHL ≤10 ns @ 5 V, 50 pF - Enables reliable operation in high-speed address/data bus applications up to ~50 MHz. |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - Matches standard TTL logic levels for seamless integration into legacy systems. |
| ESD Protection | >2000 V HBM - Meets MIL-STD-883C Method 3015, supporting robust handling in manufacturing and field environments. |
| Operating Temperature | 0°C to 70°C - Qualified for commercial and industrial ambient conditions without derating. |
| Input Capacitance | 6 pF - Minimizes capacitive loading on upstream drivers, preserving signal integrity in dense PCB layouts. |
Pinout & Package
SN74BCT760NSR is packaged in a 20-pin SOIC (DW) body measuring 12.8 mm × 7.5 mm × 2.65 mm max height, with 1.27 mm pitch and RoHS-compliant NiPdAu lead finish (Level-1 MSL rating).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output-enable control inputs | Active-low enables respective 4-bit output groups; high-impedance state isolates bus segments during contention or power-down. |
| 1A1–1A4, 2A1–2A4 | Data inputs | Non-inverting inputs for two independent 4-bit channels; accept standard TTL logic levels. |
| 1Y1–1Y4, 2Y1–2Y4 | Open-collector outputs | Each sinks current when enabled; requires external pull-up for logic-high assertion and bus arbitration. |
| VCC (Pin 20) | Power supply | 5-V nominal supply; decoupling capacitor required near pin to suppress switching noise. |
| GND (Pin 10) | Ground reference | Common return path for all I/O and internal circuitry; must be low-impedance connection to minimize ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit channels | Enables selective enable/disable of two bus segments without shared control logic or timing skew. |
| Open-collector outputs | Supports wired-AND bus topologies, level translation, and multi-source arbitration in shared-data systems. |
| TTL-compatible input thresholds | Eliminates need for level-shifting circuitry when interfacing with legacy 5-V microcontrollers or FPGAs. |
| 64 mA output sink capability | Drives up to 10 standard TTL loads per output, reducing need for external driver stages in memory subsystems. |
| MIL-STD-883C ESD rating | Reduces risk of field failure due to handling or system-level ESD events in industrial control cabinets. |
Applications
| Memory Address Buffering | Parallel Bus Driver |
|---|---|
Use Scenario: Driving 16-bit address lines from a microprocessor to multiple SRAM or EPROM chips in a shared-memory architecture. IC Role / Device Role / Timing Role: Non-inverting buffer with independent OE control per 4-bit nibble, enabling dynamic chip-select gating and address bus isolation. Use Value: Prevents address bus contention during memory banking; 64 mA sink current ensures full TTL fanout without added transistors. | Use Scenario: Interfacing a microcontroller's parallel I/O port to an external peripheral with bidirectional data handshake (e.g., printer or display controller). IC Role / Device Role / Timing Role: Open-collector line driver providing controlled bus release and wired-AND ready signaling for BUSY/ACK handshaking. Use Value: Eliminates need for external diodes or pull-ups in handshake lines; tPHL ≤7.2 ns ensures timing compliance with 10-MHz peripheral clocks. |
| Legacy System Bus Expansion | Industrial Control Backplane Interface |
Use Scenario: Extending ISA or similar 8-bit bus segments across multiple PCBs in retrofit industrial controllers. IC Role / Device Role / Timing Role: Octal buffer isolating master and slave bus sections while maintaining signal integrity and voltage compatibility. Use Value: Dual OE inputs allow synchronized expansion slot enable/disable; open-collector outputs tolerate minor voltage mismatches between boards. | Use Scenario: Connecting PLC CPU modules to distributed I/O racks via shielded parallel backplane cabling. IC Role / Device Role / Timing Role: Robust bus driver with high noise immunity and ESD-hardened inputs for electrically noisy factory-floor environments. Use Value: >2000 V HBM ESD rating reduces field returns; 0°C–70°C range covers typical cabinet operating temperatures without thermal derating. |
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 |
|---|---|---|---|
| SN74LS244N | Lower output current (24 mA), higher propagation delay (15–20 ns), no ESD rating specified. | Suitable only for low-speed, low-fanout legacy systems; lacks bus-driving strength for modern peripherals. | Select only if cost sensitivity outweighs performance and reliability requirements in non-critical applications. |
| SN74AHCT244PW | CMOS-based, 8 mA output current, 3.3-V compatible inputs, but not TTL-voltage tolerant. | Requires level-shifting for 5-V TTL buses; unsuitable for direct drop-in replacement in existing 5-V designs. | Prefer for new 3.3-V systems with mixed-voltage interfaces; avoid for SN74BCT760NSR retrofits. |
Compared with SN74LS244N and SN74AHCT244PW, the SN74BCT760NSR uniquely combines 5-V TTL compatibility, 64 mA drive, sub-10 ns timing, and military-grade ESD protection-making it the only viable choice for upgrading legacy bus drivers without layout changes or voltage translation.
Availability
SN74BCT760NSR is available at Aetrix Electronics and suitable for memory subsystem design, industrial backplane interfacing, and legacy system bus expansion requiring stable component supply and long-term obsolescence management.
Supply support for SN74BCT760NSR 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 for industrial, automotive, and communications markets.
The SN74BCT760NSR belongs to TI's legacy BCT logic family, designed specifically to enhance density and performance of 3-state memory address drivers and bus-oriented receivers/transmitters in 5-V TTL systems.
FAQ
What is the maximum output sink current specification for SN74BCT760NSR?
The SN74BCT760NSR is rated for 64 mA low-level output current (IOL) per channel under recommended operating conditions (VCC = 4.5 V, TA = 0°C to 70°C). This value is confirmed in the electrical characteristics table of the SCBS034B datasheet and reflects its capability to drive multiple TTL loads or terminate bus stubs without external amplification. Exceeding this current risks parametric shift or long-term reliability degradation.
Does SN74BCT760NSR support 3.3-V logic inputs?
No, SN74BCT760NSR does not support 3.3-V logic inputs. Its input thresholds are TTL-compatible: VIH = 2.0 V minimum and VIL = 0.8 V maximum, optimized for 5-V systems. Applying 3.3-V signals may result in marginal or undefined switching behavior, especially across temperature extremes. For mixed-voltage designs, level-shifting circuitry or a 3.3-V–compatible alternative like SN74AHCT244 is required.
What package type is used for SN74BCT760NSR, and is it RoHS compliant?
SN74BCT760NSR uses the SOIC-20 (DW) package, with dimensions 12.8 mm × 7.5 mm × 2.65 mm max height and 1.27 mm lead pitch. It is RoHS compliant, featuring NiPdAu lead finish and Level-1 MSL rating (260°C peak reflow). The part marking "BCT760" appears on the top surface, and tape-and-reel packaging (2000 units per reel) is standard for SN74BCT760DWR variants.
Can SN74BCT760NSR replace SN74BCT244 in existing designs?
Yes, SN74BCT760NSR is explicitly documented as the open-collector version of ′BCT244 and shares identical pinout, timing, and electrical characteristics for the buffered channels. Both devices use the same DW/SOIC-20 package and operate across 0°C–70°C. However, SN74BCT760NSR adds dual independent OE inputs (1OE/2OE), offering finer-grained bus control than the single-OE SN74BCT244-enabling enhanced system-level power management.
What is the absolute maximum supply voltage rating for SN74BCT760NSR?
The absolute maximum supply voltage (VCC) for SN74BCT760NSR is –0.5 V to 7 V, as specified in the Absolute Maximum Ratings table of SCBS034B. Operation outside the recommended 4.5–5.5 V range may cause permanent damage or unpredictable behavior. Sustained exposure above 5.5 V-even briefly during power sequencing-risks junction breakdown and is not supported for functional operation.
SN74BCT760NSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74BCT
- Package/Case:
- 20-SOIC (0.209", 5.30mm 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:
- -, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
SN74BCT760NSR FAQ
1.How can I place an order for SN74BCT760NSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74BCT760NSR 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 SN74BCT760NSR reliable?
The price and inventory of SN74BCT760NSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74BCT760NSR is usually 5 days.
3.What payment methods are accepted for SN74BCT760NSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74BCT760NSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74BCT760NSR?
SN74BCT760NSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74BCT760NSR 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 SN74BCT760NSR?
For technical support, including SN74BCT760NSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74BCT760NSR requirements.
6.How does Aetrix verify that SN74BCT760NSR is sourced from the original manufacturer or authorized distributors?
All SN74BCT760NSR 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 SN74BCT760NSR meets industry standards.
7.What is the process for return or replacement of SN74BCT760NSR?
All SN74BCT760NSR units undergo pre-shipment inspection (PSI). If there is an issue with SN74BCT760NSR, 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 SN74BCT760NSR part is unused and in its original packaging.
Return procedure for SN74BCT760NSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74BCT760NSR Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
