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Texas Instruments SN74BCT760DWR
- Part No.:
- SN74BCT760DWR
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74BCT760DWR.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,542
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Product details
Overview
SN74BCT760DWR 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 up to 64 mA sink current per output, and supports bus driving and memory address buffering in industrial logic systems. Its SOIC-20 package enables high-density PCB layouts.
For engineers reviewing the SN74BCT760DWR datasheet, SN74BCT760DWR pinout, SN74BCT760DWR application, or SN74BCT760DWR equivalent, key selection criteria include open-collector drive capability, 0°C to 70°C temperature range, 20-pin SOIC packaging, propagation delay under 10 ns, and compatibility with TTL-level inputs and 5-V bus systems.
Technical Context
The SN74BCT760DWR implements dual 4-bit non-inverting buffers with separate OE controls per group, enabling independent enable/disable of each 4-bit channel. Each output is open-collector, requiring external pull-up for logic-high assertion and supporting wired-AND bus configurations.
It uses bipolar BCT (Bipolar CMOS-TTL) technology for TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2 V) and fast switching (tPHL down to 2.1 ns, tPLH up to 10 ns at 5 V), with guaranteed operation across 4.5–5.5 V supply and 0°C to 70°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5-V TTL and mixed-voltage logic systems. |
| Output Sink Current | 64 mA per output - supports direct driving of multiple TTL loads or termination of 50-Ω transmission lines. |
| Propagation Delay | 2.1–10 ns (A→Y), 3.2–9.9 ns (OE→Y) - enables high-speed address/data buffering in memory and bus interfaces. |
| Input Thresholds | VIL = 0.8 V, VIH = 2.0 V - guarantees robust noise margin and interoperability with legacy TTL and LVTTL sources. |
| ESD Protection | >2000 V HBM - meets MIL-STD-883C Method 3015, enhancing reliability in handling and assembly environments. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control, instrumentation, and industrial logic applications. |
| Package | SOIC-20 (DW), 7.5 mm × 12.8 mm - surface-mount compatible with automated assembly and space-constrained PCBs. |
Pinout & Package
SN74BCT760DWR is housed in a 20-pin SOIC (DW) package with 1.27 mm pitch, 2.65 mm max height, and RoHS-compliant NiPdAu lead finish. Pin 1 is located in Quadrant Q1 per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Output-enable inputs (active-low) | Independently disable each 4-bit buffer group; high = high-Z output state. |
| 1A1–1A4, 2A1–2A4 | Data inputs | Eight TTL-compatible inputs grouped into two 4-bit channels feeding respective outputs. |
| 1Y1–1Y4, 2Y1–2Y4 | Open-collector outputs | Sink-only outputs requiring external pull-up; support wired-AND, bus arbitration, and level translation. |
| VCC (Pin 20) | Power supply | 5-V nominal supply connection; decoupling recommended near pin for noise immunity. |
| GND (Pin 10) | Ground reference | Common return path for all inputs, outputs, and internal circuitry; critical for signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit channels | Enables selective enable/disable of two memory address segments or bus sections without cross-talk. |
| Open-collector outputs | Permits wired-AND logic, multi-source bus sharing, and interface to higher-voltage systems via pull-up. |
| 64 mA output sink capability | Drives up to 10 standard TTL loads or terminates 50-Ω lines directly-no external driver needed. |
| 2.1 ns minimum tPHL | Supports >100 MHz clock-domain interfacing in high-speed address latching and data staging circuits. |
| TTL-compatible input thresholds | Ensures seamless integration with legacy 74-series, microcontroller GPIOs, and FPGA I/O banks configured for 5-V TTL. |
Applications
| Memory Address Buffering | Parallel Bus Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microprocessor to multiple SRAM or EPROM chips on a shared bus. IC Role / Device Role / Timing Role: Octal buffer isolating and strengthening address signals while enabling chip-select gating via OE control. Use Value: Prevents address skew and loading-induced timing violations; dual OE allows interleaved memory bank access. | Use Scenario: Interfacing a microcontroller's parallel data port to an LCD controller or printer interface with bidirectional handshake signals. IC Role / Device Role / Timing Role: Unidirectional driver for data/control lines, leveraging open-collector outputs for wired-AND ready/busy signaling. Use Value: Eliminates need for discrete pull-ups on control lines; 64 mA sink supports fast edge rates on capacitive bus traces. |
| Industrial I/O Expansion | Legacy System Logic Translation |
Use Scenario: Expanding PLC digital output capacity by buffering microcontroller GPIOs to drive relays, solenoids, or optocouplers. IC Role / Device Role / Timing Role: High-current buffer translating low-drive MCU outputs into robust industrial-level signals. Use Value: 64 mA per output sustains relay coil hold current; ESD protection reduces field failure in electrically noisy plants. | Use Scenario: Integrating modern microcontrollers with vintage TTL-based test equipment or instrumentation backplanes. IC Role / Device Role / Timing Role: Level- and drive-capability translator between 3.3-V/5-V MCU I/O and legacy 5-V TTL logic families. Use Value: TTL-compatible thresholds and 5-V tolerant inputs eliminate level-shifter components; SOIC-20 fits retrofits without board redesign. |
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 sink current (24 mA), no dual OE, standard TTL (not BCT) process, slower propagation (15–25 ns). | Not suitable for high-speed or high-drive bus applications; limited to low-frequency address/data buffering. | Select only when drive strength and speed requirements are relaxed and cost is primary constraint. |
| SN74ACT244PW | CMOS-based, 24 mA sink, 3-state (not open-collector), 4.5–5.5 V, faster (tPD ≈ 3.5 ns), but lacks wired-AND capability. | Cannot implement wired-AND or bus arbitration; requires explicit direction control instead of passive pull-up logic. | Choose when 3-state isolation suffices and open-collector functionality is unnecessary. |
Compared with SN74LS244N and SN74ACT244PW, the SN74BCT760DWR uniquely combines dual OE control, 64 mA sink, open-collector architecture, and sub-10 ns timing-making it the only option among the three that supports both high-drive bus termination and hardware-level bus arbitration.
Availability
SN74BCT760DWR is available at Aetrix Electronics and suitable for industrial control systems, legacy equipment upgrades, and embedded memory interface designs requiring stable component supply and long-term manufacturability.
Supply support for SN74BCT760DWR 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 delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74BCT760DWR belongs to TI's 74BCT logic family, engineered for high-speed, high-drive TTL-compatible interfacing in memory subsystems, bus architectures, and industrial control logic where open-collector flexibility and robust noise immunity are essential.
FAQ
What is the maximum output sink current specification for SN74BCT760DWR?
The SN74BCT760DWR is rated for 64 mA sink current per output at VCC = 4.5 V and TA = 25°C, with typical VOL = 0.42 V. This value is confirmed in the "Electrical Characteristics" table of the SCBS034B datasheet and applies across the full 0°C to 70°C operating range. Exceeding this current may cause excessive voltage drop or thermal stress.
Does SN74BCT760DWR support 3.3-V logic inputs?
No, SN74BCT760DWR does not guarantee reliable operation with 3.3-V logic inputs. Its input thresholds are TTL-compatible (VIH = 2.0 V min, VIL = 0.8 V max), and the absolute maximum input voltage is 7 V-but the device is designed for 5-V system interfacing. Applying 3.3-V high-level signals risks marginal VIH margin and should be avoided unless verified with external level translation.
What is the pin 1 location and orientation for SN74BCT760DWR in tape-and-reel packaging?
For SN74BCT760DWR in SOIC-20 (DW) packaging, pin 1 is located in Quadrant Q1 of the carrier tape, as specified in TI's Package Materials Information document. The device is oriented with the notch or index mark toward the sprocket holes side, and the tape feed direction aligns with standard SOIC placement for pick-and-place machines.
Can SN74BCT760DWR replace SN74BCT244 in existing designs?
Yes, SN74BCT760DWR is explicitly described as the open-collector version of ′BCT244 and shares identical pinout, electrical characteristics, and functional behavior for buffered output stages. However, SN74BCT760DWR provides dual independent OE inputs versus single OE in ′BCT244-offering enhanced channel control flexibility without requiring PCB changes if OE routing permits.
Is SN74BCT760DWR RoHS compliant and what is its moisture sensitivity level?
Yes, SN74BCT760DWR is RoHS compliant (lead-free NiPdAu finish) and carries an MSL rating of Level-1 at 260°C peak reflow, meaning it is not moisture-sensitive and does not require baking prior to soldering. This is confirmed in TI's Package Option Addendum, where SN74BCT760DWR is listed with "Yes" under RoHS and "Level-1-260C-UNLIM" under MSL rating.
SN74BCT760DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74BCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
SN74BCT760DWR FAQ
1.How can I place an order for SN74BCT760DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74BCT760DWR 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 SN74BCT760DWR reliable?
The price and inventory of SN74BCT760DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74BCT760DWR is usually 5 days.
3.What payment methods are accepted for SN74BCT760DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74BCT760DWR transactions.
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4.How is shipping managed for SN74BCT760DWR?
SN74BCT760DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74BCT760DWR 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 SN74BCT760DWR?
For technical support, including SN74BCT760DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74BCT760DWR requirements.
6.How does Aetrix verify that SN74BCT760DWR is sourced from the original manufacturer or authorized distributors?
All SN74BCT760DWR 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 SN74BCT760DWR meets industry standards.
7.What is the process for return or replacement of SN74BCT760DWR?
All SN74BCT760DWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74BCT760DWR, 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 SN74BCT760DWR part is unused and in its original packaging.
Return procedure for SN74BCT760DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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