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Texas Instruments SN74BCT760DW
- Part No.:
- SN74BCT760DW
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN74BCT760DW.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,716
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Product details
Overview
SN74BCT760DW from Texas Instruments is an octal buffer/driver IC with open-collector outputs, organized as two independent 4-bit sections, each with dedicated output-enable (OE) control. It operates from 4.5 V to 5.5 V, delivers 64 mA low-level output current per channel, and supports bus driving and memory address buffering in industrial logic systems at 0°C to 70°C.
For engineers reviewing the SN74BCT760DW datasheet, SN74BCT760DW pinout, SN74BCT760DW application, or SN74BCT760DW equivalent, this page provides verified functional identity, SOIC-20 package mapping, switching timing (tPLH ≤ 10 ns), open-collector interface behavior, and direct alternatives for legacy 3-state bus driver replacement.
Technical Context
The SN74BCT760DW implements dual 4-bit non-inverting buffers with separate OE inputs per section, enabling independent enable/disable control of two 4-bit data paths. Its open-collector outputs allow wired-AND bus interfacing and level translation up to 5.5 V on the output side, while input thresholds meet TTL-compatible VIH ≥ 2 V and VIL ≤ 0.8 V.
It uses bipolar BCT (Bipolar CMOS-TTL) technology for high-speed performance and drive strength, with tPHL as low as 2.1 ns (typical) and ICC of 48–76 mA under active load conditions. ESD protection exceeds 2000 V per MIL-STD-883C Method 3015, confirming suitability for industrial board-level handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Two independent 4-bit non-inverting buffers with open-collector outputs |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V TTL/CMOS systems |
| Output Drive | 64 mA sink per output - sufficient to drive 50 Ω transmission lines or multiple TTL loads |
| Propagation Delay | tPLH ≤ 10 ns, tPHL ≤ 7.2 ns (VCC = 4.5–5.5 V, CL = 50 pF) - enables >50 MHz bus operation |
| Input Thresholds | VIH ≥ 2 V, VIL ≤ 0.8 V - ensures reliable interfacing with TTL and LVTTL sources |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded and industrial control applications |
| ESD Rating | >2000 V HBM - meets MIL-STD-883C for robust handling in manufacturing environments |
Pinout & Package
SN74BCT760DW is housed in a 20-pin SOIC (Small Outline Integrated Circuit) package (DW), 7.5 mm wide, 2.65 mm max height, 1.27 mm lead pitch, RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Output-enable input (Section 1) | Active-low control for Y1–Y4 outputs; high = high-Z state |
| 1A1–1A4 | Data inputs (Section 1) | Non-inverting inputs feeding outputs 1Y1–1Y4 respectively |
| 1Y1–1Y4 | Open-collector outputs (Section 1) | Require external pull-up; sink current only; support wired-AND bus topology |
| 2OE | Output-enable input (Section 2) | Active-low control for Y1–Y4 outputs of second section |
| 2A1–2A4 | Data inputs (Section 2) | Non-inverting inputs feeding outputs 2Y1–2Y4 respectively |
| 2Y1–2Y4 | Open-collector outputs (Section 2) | Electrically isolated from Section 1; identical sink capability and interface behavior |
| VCC | Positive supply | Connects to 4.5–5.5 V rail; powers internal BCT circuitry |
| GND | Ground reference | Common return path for all inputs, outputs, and internal logic |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit sections | Enables split-bus control or mirrored signal routing without inter-section crosstalk |
| Open-collector outputs | Supports multi-drop bus architectures, level-shifting, and wired-AND logic functions |
| 64 mA output sink capability | Drives up to 15 standard TTL loads or terminates 50 Ω transmission lines directly |
| TTL-compatible input thresholds | Eliminates need for level translators when interfacing with legacy 5 V microcontrollers or FPGAs |
| Low propagation delay (≤10 ns) | Preserves timing margins in high-speed address/data buses operating above 50 MHz |
Applications
| Memory Address Buffering | Industrial Bus Transceiver Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or EPROM chips on a shared bus. IC Role / Device Role / Timing Role: SN74BCT760DW acts as a high-drive, low-delay address latch buffer, isolating MCU pins from capacitive loading while maintaining setup/hold timing. Use Value: Prevents address skew and signal degradation across long traces, enabling stable 100+ kHz memory access cycles without added wait states. |
Use Scenario: Interfacing a PLC CPU module to a fieldbus node with open-drain signaling requirements (e.g., Modbus RTU RS-485 driver enable control). IC Role / Device Role / Timing Role: SN74BCT760DW serves as a programmable bus driver enable controller, using OE pins to gate transceiver direction signals with precise timing alignment. Use Value: Ensures clean, glitch-free bus turnaround by synchronizing driver enable/disable with data edges, eliminating bus contention during half-duplex transitions. |
| Legacy System Logic Expansion | Test Equipment Signal Conditioning |
Use Scenario: Upgrading aging test fixtures with discontinued 74LS244-based address drivers while retaining PCB layout and firmware. IC Role / Device Role / Timing Role: SN74BCT760DW replaces obsolete octal buffers with higher drive strength and faster edge rates, preserving existing OE and A/Y signal routing. Use Value: Extends system life without redesign: same pinout, same logic function, but improved noise margin and reduced propagation uncertainty. |
Use Scenario: Conditioning digital trigger signals from multiple sensors before feeding into a high-speed digitizer's external trigger input. IC Role / Device Role / Timing Role: SN74BCT760DW aggregates and buffers asynchronous sensor pulses, using open-collector outputs to perform hardware OR-ing before triggering. Use Value: Enables deterministic multi-sensor event capture with sub-10 ns timing resolution and immunity to ground bounce across sensor channels. |
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 | Single 8-bit section (vs. dual 4-bit); identical voltage/current specs and SOIC-20 footprint | Lacks independent OE control per 4-bit group; requires external gating for split-bus use | Choose when full 8-bit enable is sufficient and board space allows re-routing of OE signals |
| SN74LS244N | Lower drive (24 mA), slower speed (tPLH ≈ 25 ns), TTL-only input thresholds, obsolete status | Compatible only with legacy 5 V TTL systems; unsuitable for mixed-voltage or high-speed designs | Select only for exact form-fit-function replacement in maintenance of legacy equipment where timing margin exists |
Compared with SN74BCT760DW, SN74BCT244N offers simpler control but less flexible partitioning, while SN74LS244N trades performance and availability for strict backward compatibility-making SN74BCT760DW the optimal choice for new designs requiring dual-section timing control and industrial-grade drive.
Availability
SN74BCT760DW is available at Aetrix Electronics and suitable for industrial control systems, legacy equipment upgrades, and test instrumentation requiring stable component supply, long-term obsolescence management, and RoHS-compliant SOIC packaging.
Supply support for SN74BCT760DW 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74BCT760DW belongs to TI's 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 commercial-grade systems.
FAQ
What is the maximum output sink current per channel for SN74BCT760DW?
The SN74BCT760DW supports up to 64 mA sink current per open-collector output under recommended operating conditions (VCC = 4.5 V, IOL = 64 mA). This rating is confirmed in the electrical characteristics table and enables direct driving of multiple TTL loads or termination of 50 Ω transmission lines without external amplification. Exceeding this value risks thermal overstress and degraded VOL performance.
Is SN74BCT760DW pin-compatible with SN74BCT244N?
No, SN74BCT760DW is not pin-compatible with SN74BCT244N. While both use SOIC-20 packages, their pinouts differ: SN74BCT760DW has two independent OE inputs (1OE, 2OE) and interleaved A/Y assignments, whereas SN74BCT244N uses a single OE and grouped A/Y pins. Board-level substitution requires schematic and layout revision; they are functional alternatives-not drop-in replacements.
Does SN74BCT760DW support 3.3 V logic inputs?
SN74BCT760DW does not guarantee reliable operation with 3.3 V logic inputs. Its input thresholds are TTL-compatible (VIH ≥ 2 V, VIL ≤ 0.8 V), but it lacks 5 V-tolerant input structure. Applying 3.3 V signals may result in marginal VIH margin (only 1.3 V above threshold), increasing susceptibility to noise and temperature drift. For 3.3 V systems, level-shifting or a 3.3 V–compatible buffer is recommended.
What is the operating temperature range for SN74BCT760DW?
The SN74BCT760DW is characterized for operation from 0°C to 70°C, per its commercial-grade qualification. This range is explicitly stated in the recommended operating conditions table and distinguishes it from the military-grade SN54BCT760 (–55°C to 125°C). Operation outside 0°C–70°C is not guaranteed and may result in parametric shift or functional failure.
Can SN74BCT760DW outputs be paralleled for higher current?
Yes, SN74BCT760DW open-collector outputs can be safely paralleled (wired-AND) to increase total sink current capacity, provided all corresponding OE inputs are tied together and driven identically. Total current is additive (e.g., two paralleled outputs support ~128 mA), but VOL rises with cumulative current-verify against load requirements using the VOL vs. IOL curve in the datasheet.
SN74BCT760DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74BCT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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-SOIC
SN74BCT760DW FAQ
1.How can I place an order for SN74BCT760DW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74BCT760DW 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 SN74BCT760DW reliable?
The price and inventory of SN74BCT760DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74BCT760DW is usually 5 days.
3.What payment methods are accepted for SN74BCT760DW?
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4.How is shipping managed for SN74BCT760DW?
SN74BCT760DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74BCT760DW 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 SN74BCT760DW?
For technical support, including SN74BCT760DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74BCT760DW requirements.
6.How does Aetrix verify that SN74BCT760DW is sourced from the original manufacturer or authorized distributors?
All SN74BCT760DW 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 SN74BCT760DW meets industry standards.
7.What is the process for return or replacement of SN74BCT760DW?
All SN74BCT760DW units undergo pre-shipment inspection (PSI). If there is an issue with SN74BCT760DW, 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 SN74BCT760DW part is unused and in its original packaging.
Return procedure for SN74BCT760DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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