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Texas Instruments SN74BCT760MDWREP
- Part No.:
- SN74BCT760MDWREP
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74BCT760MDWREP.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,930
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Product details
Overview
SN74BCT760MDWREP from Texas Instruments is an octal buffer/driver with open-collector outputs, designed for memory address bus driving and clock distribution in high-reliability military/aerospace systems. It features dual 4-bit channels, independent output-enable (1OE/2OE) control, –55°C to 125°C operation, 48 mA low-level output current, and SOIC-20 DW package.
For engineers reviewing the SN74BCT760MDWREP datasheet, SN74BCT760MDWREP pinout, SN74BCT760MDWREP application, or SN74BCT760MDWREP equivalent, key selection criteria include open-collector drive capability, extended temperature range support, bus-compatible propagation delay (tPLH ≤ 9.5 ns), and compatibility with 5-V TTL logic families in radiation-tolerant or long-lifecycle embedded designs.
Technical Context
The SN74BCT760MDWREP implements two independent 4-bit non-inverting buffers, each with separate active-low output-enable inputs (1OE, 2OE). When OE is low, data passes from A-inputs to Y-outputs; when high, outputs enter high-impedance state. All outputs are open-collector, requiring external pull-up resistors for bus termination.
It operates across –55°C to 125°C using 4.5 V to 5.5 V supply, delivers 48 mA sink current per output at VOL ≤ 0.55 V, and exhibits propagation delays of 2.1–9.5 ns depending on signal path (A→Y or OE→Y), making it suitable for synchronous address/data buffering where timing predictability and bus contention avoidance are critical.
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 and margin against rail droop in noisy environments. |
| Operating Temperature | –55°C to 125°C - qualified for extended military/aerospace applications without derating up to 125°C junction. |
| Output Type | Open-collector - enables wired-OR bus configurations, level translation via external pull-up, and shared-line arbitration. |
| Low-Level Output Current | 48 mA per output - supports driving heavy capacitive loads (e.g., >50 pF buses) while maintaining VOL ≤ 0.55 V. |
| Propagation Delay | tPHL = 2.1–6.5 ns, tPLH = 6.3–15.2 ns - guarantees deterministic timing for memory address strobing and clock fanout in synchronous systems. |
| Input Clamp Current | –18 mA - protects inputs during overvoltage transients (e.g., hot-swap, ESD), exceeding MIL-STD-883C 3015 Class 2. |
| Package | SOIC-20 (DW) - industry-standard 0.300″ wide body with 1.27 mm pitch, compatible with automated assembly and legacy PCB footprints. |
Pinout & Package
SN74BCT760MDWREP uses a 20-pin SOIC (DW) package with 1.27 mm pitch, 13.0 mm × 7.6 mm body size, and maximum height of 2.65 mm. Pin 1 identifier located at top-left corner (Q1 quadrant in tape).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Channel 1 output enable (active-low) | Controls all four Y1–Y4 outputs of first buffer; low = enabled, high = high-Z. |
| 1A1–1A4 | Channel 1 input lines | Non-inverting inputs for first 4-bit buffer; drive corresponding Y1–Y4 when 1OE is low. |
| 1Y1–1Y4 | Channel 1 open-collector outputs | Collectively drive bus/memory address lines; require external pull-up for logic HIGH. |
| 2OE | Channel 2 output enable (active-low) | Independent control of second 4-bit buffer (2A1–2A4 → 2Y1–2Y4). |
| 2A1–2A4 | Channel 2 input lines | Inputs for second buffer; electrically isolated from Channel 1 except shared VCC/GND. |
| 2Y1–2Y4 | Channel 2 open-collector outputs | Enable dual-bus segmentation or redundant address pathing without cross-talk. |
| VCC | Positive supply | Must be decoupled locally (0.1 µF ceramic + bulk cap); powers both channels and internal logic. |
| GND | Ground reference | Common return for all I/O and supply currents; requires low-inductance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit buffers | Enables simultaneous but isolated buffering of two memory banks or clock domains without inter-channel timing skew. |
| Open-collector outputs | Supports wired-AND/WIRED-OR bus topologies, multi-driver arbitration, and voltage-level translation via external pull-up selection. |
| Extended temperature qualification | JEDEC-qualified for –55°C to 125°C with HAST, temperature cycling, and electromigration testing - validated for 10-year life at 10°C Tj. |
| ESD protection | Exceeds 2000 V per MIL-STD-883C Method 3015 - reduces need for external transient suppression in ruggedized enclosures. |
| Controlled baseline manufacturing | Single assembly/test site and single fabrication site - ensures consistent parametric performance and traceable lot history for defense programs. |
Applications
| Memory Address Bus Driver | High-Reliability Clock Distribution |
|---|---|
Use Scenario: Driving 16-bit address bus in radiation-hardened avionics memory subsystem with multiple SRAM/ROM devices sharing common address lines. IC Role / Device Role / Timing Role: Octal buffer providing current gain and isolation between microcontroller address pins and parallel memory array; open-collector outputs allow bus arbitration with other controllers. Use Value: 48 mA sink capability ensures clean logic LOW under full bus capacitance; dual OE inputs permit dynamic bank selection without glitching. | Use Scenario: Fanout of a master system clock to eight synchronous peripherals (ADCs, DACs, FPGAs) in a satellite payload controller operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Non-inverting clock driver with matched propagation delay paths (tPHL/tPLH ≤ 6.5 ns) minimizing skew across distributed clock nodes. Use Value: Extended temperature rating eliminates thermal derating; open-collector outputs simplify termination to different voltage rails (e.g., 3.3 V peripherals via 3.3 V pull-ups). |
| Legacy System Bus Interface | Military Data Acquisition Backplane |
Use Scenario: Interfacing modern microcontrollers to legacy 8-bit ISA-style peripheral cards requiring TTL-compatible open-collector address/data strobes. IC Role / Device Role / Timing Role: Level-shifting and drive-strengthening buffer between 3.3 V MCU GPIO and 5 V bus infrastructure; OE pins synchronized to control handshake signals. Use Value: Input voltage range (–0.5 V to 7 V) tolerates mixed-voltage signaling; VIH/VIL thresholds (2.0 V/0.8 V) ensure robust noise margin in electrically noisy industrial cabinets. | Use Scenario: Signal conditioning and routing in a DO-160G-compliant airborne data acquisition unit handling analog sensor inputs, discrete status lines, and serial command buses. IC Role / Device Role / Timing Role: Isolating and buffering discrete fault/status signals (e.g., overtemperature, watchdog timeout) before aggregation onto a central diagnostic bus. Use Value: Qualified pedigree (V62/06672-01XE equivalent) provides documented reliability data for safety-critical reporting paths; 125°C rating supports conduction-cooled chassis designs. |
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 |
|---|---|---|---|
| SN74BCT244N | Same logic function and pinout, but commercial-grade (0°C to 70°C), plastic DIP-20 package; lacks extended temp qualification and enhanced DMS support. | Suitable only for benign-environment ground-based test equipment or lab prototypes - not rated for flight or deployed military use. | Select SN74BCT244N only for cost-sensitive, non-mission-critical development where extended temperature and reliability validation are unnecessary. |
| SN54BCT760J | Military-spec version with identical electrical specs and DW package, but QML-38534 Class V certified and tested to –55°C to 125°C with full MIL-PRF-38534 screening. | Required for DoD procurement contracts mandating QML certification; includes additional burn-in and lot acceptance testing beyond SN74BCT760MDWREP's EP qualification. | Choose SN54BCT760J when contractual compliance with MIL-STD-883 or QML-38534 is mandatory - otherwise SN74BCT760MDWREP offers equivalent performance at lower cost. |
Compared with SN74BCT244N and SN54BCT760J, the SN74BCT760MDWREP delivers military-temperature performance and enhanced product continuity without QML overhead, making it optimal for space-constrained, long-lifecycle embedded systems where reliability and supply chain stability outweigh formal certification requirements.
Availability
SN74BCT760MDWREP is available at Aetrix Electronics and suitable for aerospace flight computers, defense radar processors, and industrial control systems requiring stable component supply across 15+ year production lifecycles.
Supply support for SN74BCT760MDWREP 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 specializing in analog, embedded processing, and high-reliability logic solutions, with decades of heritage in military and space-grade component development.
The SN74BCT760MDWREP belongs to TI's Enhanced Plastic (EP) logic family, engineered specifically for high-density, high-speed memory addressing and bus interfacing in mission-critical systems where extended temperature operation and long-term supply assurance are essential.
FAQ
What is the maximum sink current per output for SN74BCT760MDWREP?
The SN74BCT760MDWREP supports a guaranteed low-level output current (IOL) of 48 mA per channel at VCC = 4.5 V and VOL ≤ 0.55 V. This allows direct driving of moderately capacitive buses (e.g., 50 pF) without external amplification. The absolute maximum rating is 96 mA, but sustained operation above 48 mA may exceed thermal limits in the SOIC-20 package.
Does SN74BCT760MDWREP support 3.3-V input logic levels?
Yes, SN74BCT760MDWREP accepts 3.3-V logic inputs reliably: its VIH threshold is 2.0 V minimum and VIL is 0.8 V maximum at VCC = 5 V, providing 0.3 V noise margin for 3.3-V CMOS/TTL signals. Input voltage range extends to –0.5 V to 7 V, accommodating overshoot and mixed-voltage interface scenarios without damage.
Can SN74BCT760MDWREP replace SN74BCT244 in existing designs?
SN74BCT760MDWREP is functionally identical to SN74BCT244 and shares the same pinout and logic behavior, but it adds extended temperature range (–55°C to 125°C), enhanced DMS support, and EP packaging. For drop-in replacement, verify that board layout accommodates the SOIC-20 DW footprint and that thermal design accounts for higher reliability screening.
What is the propagation delay variation between channels in SN74BCT760MDWREP?
Propagation delay matching between Channel 1 (1A→1Y) and Channel 2 (2A→2Y) is tightly controlled: tPLH and tPHL parameters are specified identically for both channels (e.g., tPHL = 2.1–7.7 ns over temperature). This ensures <1 ns inter-channel skew at 25°C, critical for synchronized address or clock distribution across parallel paths in the SN74BCT760MDWREP.
Is SN74BCT760MDWREP RoHS compliant and lead-free?
Yes, SN74BCT760MDWREP is RoHS compliant with lead-free terminal finish (NIPDAU) and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life at ≤30°C/60% RH. Its SOIC-DW package is compatible with standard Pb-free reflow profiles up to 260°C peak temperature.
SN74BCT760MDWREP 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:
- -, 48mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN74BCT760MDWREP FAQ
1.How can I place an order for SN74BCT760MDWREP through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74BCT760MDWREP 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 SN74BCT760MDWREP reliable?
The price and inventory of SN74BCT760MDWREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74BCT760MDWREP is usually 5 days.
3.What payment methods are accepted for SN74BCT760MDWREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74BCT760MDWREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74BCT760MDWREP?
SN74BCT760MDWREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74BCT760MDWREP 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 SN74BCT760MDWREP?
For technical support, including SN74BCT760MDWREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74BCT760MDWREP requirements.
6.How does Aetrix verify that SN74BCT760MDWREP is sourced from the original manufacturer or authorized distributors?
All SN74BCT760MDWREP 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 SN74BCT760MDWREP meets industry standards.
7.What is the process for return or replacement of SN74BCT760MDWREP?
All SN74BCT760MDWREP units undergo pre-shipment inspection (PSI). If there is an issue with SN74BCT760MDWREP, 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 SN74BCT760MDWREP part is unused and in its original packaging.
Return procedure for SN74BCT760MDWREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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