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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN64BCT25244DWR

Name: SN64BCT25244DWR
Brand: Texas Instruments
SKU: SN64BCT25244DWR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN64BCT25244DWR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 24-SOIC (0.295", 7.50mm Width)

Datasheet:: SN64BCT25244DWR.pdf

Description:: IC BUF NON-INVERT 5.5V 24SOIC

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Product details

Overview

SN64BCT25244DWR from Texas Instruments is a 25-Ω octal 3-state buffer/line driver optimized for incident-wave switching on 25-Ω transmission lines, sinking up to 188 mA per output, operating across −40°C to 85°C, and featuring distributed V_CC/GND pins to suppress simultaneous-switching noise in memory address and clock distribution systems.

For engineers reviewing the SN64BCT25244DWR datasheet, SN64BCT25244DWR pinout, SN64BCT25244DWR application, or SN64BCT25244DWR equivalent, key selection criteria include I_OL = 188 mA, t_PZH ≤ 8.5 ns (max), high-impedance state during power-up/down (<3 V), BiCMOS low ICCZ, and SOIC-24 package compatibility with legacy 300-mil DIP footprints.

Technical Context

This device implements dual 4-bit noninverting buffers with independent 3-state enable controls (1OE, 2OE), each driving four Y outputs from corresponding A inputs. Its BiCMOS architecture enables high current drive while maintaining low quiescent supply current (I_CCZ = 7–11 mA) and robust ESD protection (>2 kV HBM, >200 V MM).

Designed explicitly for incident-wave line driving, it delivers fast edge rates (t_PLH/t_PHL ≤ 4.9/5.6 ns) into 25-Ω loads without termination, supported by distributed power/ground pins that minimize ground bounce and crosstalk in dense bus architectures.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL/CMOS logic rails and margin against supply droop.
I_OL	188 mA - Enables direct incident-wave switching of 25-Ω transmission lines without external termination resistors.
t_PZH (max)	8.5 ns - Guarantees rapid output disable timing critical for bus arbitration and multi-drop signal integrity.
I_CCZ	7–11 mA - Low quiescent current during 3-state operation reduces system-level power budget impact.
Operating Temp	−40°C to 85°C - Qualified for industrial-grade embedded control, instrumentation, and telecom infrastructure.
ESD Rating	>2000 V HBM - Meets MIL-STD-883C requirements for handling robustness in manufacturing and field service.
Input Clamping	±18 mA - Allows safe overvoltage tolerance on inputs when clamped, supporting mixed-voltage interface designs.

Pinout & Package

SN64BCT25244DWR is housed in a 24-pin SOIC (DW) package with 300-mil width, gull-wing leads, and RoHS-compliant NiPdAu finish (MSL Level-1). Pin numbering follows standard top-view orientation with pin 1 marked by a beveled corner.

Pin/Terminal	Circuit Role	Design Meaning
1, 13	1OE, 2OE	Active-low 3-state enable inputs - Independently control output groups; high = high-Z, low = active drive.
22, 20, 19, 24	1A1–1A4	Group 1 input data lines - Noninverting inputs for first quad buffer section.
17, 15, 14, 18	2A1–2A4	Group 2 input data lines - Noninverting inputs for second quad buffer section.
1, 3, 4, 6	1Y1–1Y4	Group 1 output drivers - Sink 188 mA each into 25-Ω lines; high-Z when 1OE = high.
7, 9, 10, 12	2Y1–2Y4	Group 2 output drivers - Identical electrical behavior to 1Yx; enabled by 2OE.
2, 5, 8, 11, 16, 23	GND	Distributed ground terminals - Six GND pins reduce ground loop inductance and suppress simultaneous-switching noise.
21, 20 (reused), 15 (reused)	V_CC	Distributed supply terminals - Three V_CC pins ensure stable local decoupling and minimize supply rail disturbance.

Key Features

Feature	Design Value
25-Ω line driving capability	188 mA sink per output enables clean incident-wave switching without external series termination.
Power-up/power-down high-Z	Outputs remain high-impedance below ~3 V V_CC, preventing bus contention during supply ramp.
Distributed V_CC/GND pins	Three V_CC and six GND pins minimize simultaneous-switching noise and improve signal integrity.
BiCMOS process technology	Combines bipolar speed and CMOS low I_CCZ, achieving 119 mA I_CCL with only 11 mA I_CCZ.
MIL-STD-883C ESD rating	>2000 V HBM ensures reliability in manual handling, board assembly, and field maintenance.

Applications

Memory Address Bus Driver	Clock Distribution Network
Use Scenario: Driving parallel address lines from a microcontroller or FPGA to multiple SRAM or flash devices on a shared bus. IC Role / Device Role / Timing Role: Octal noninverting buffer providing low-skew, high-current drive to maintain signal integrity across 25-Ω PCB traces. Use Value: Eliminates need for discrete series termination, reduces component count, and prevents address decoding errors due to reflection-induced ringing.	Use Scenario: Distributing a system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) with matched trace lengths. IC Role / Device Role / Timing Role: Low-jitter, high-drive clock fanout buffer ensuring monotonic edge transitions into 25-Ω loads. Use Value: Maintains <5.6 ns t_PHL and <4.9 ns t_PLH to preserve setup/hold margins across all fanout branches.
Backplane Data Transceiver Interface	Industrial Control Bus Isolation Stage
Use Scenario: Interfacing a local controller to a 25-Ω impedance-controlled backplane carrying parallel data and control signals. IC Role / Device Role / Timing Role: Bidirectional-capable (via OE control) line driver/receiver stage enabling hot-plug-safe bus access. Use Value: High-impedance state during power sequencing prevents backfeeding and ensures deterministic bus initialization.	Use Scenario: Buffering digital I/O signals between a PLC CPU module and field I/O cards over long, noisy industrial wiring. IC Role / Device Role / Timing Role: Robust 3-state isolator with ±18 mA input clamp and >2 kV ESD protection for harsh environments. Use Value: Survives repeated electrostatic discharge events and voltage transients common in factory-floor deployments.

Memory Address Bus Driver

Clock Distribution Network

Use Scenario: Driving parallel address lines from a microcontroller or FPGA to multiple SRAM or flash devices on a shared bus.

IC Role / Device Role / Timing Role: Octal noninverting buffer providing low-skew, high-current drive to maintain signal integrity across 25-Ω PCB traces.

Use Value: Eliminates need for discrete series termination, reduces component count, and prevents address decoding errors due to reflection-induced ringing.

Use Scenario: Distributing a system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) with matched trace lengths.

IC Role / Device Role / Timing Role: Low-jitter, high-drive clock fanout buffer ensuring monotonic edge transitions into 25-Ω loads.

Use Value: Maintains <5.6 ns t_PHL and <4.9 ns t_PLH to preserve setup/hold margins across all fanout branches.

Backplane Data Transceiver Interface

Industrial Control Bus Isolation Stage

Use Scenario: Interfacing a local controller to a 25-Ω impedance-controlled backplane carrying parallel data and control signals.

IC Role / Device Role / Timing Role: Bidirectional-capable (via OE control) line driver/receiver stage enabling hot-plug-safe bus access.

Use Value: High-impedance state during power sequencing prevents backfeeding and ensures deterministic bus initialization.

Use Scenario: Buffering digital I/O signals between a PLC CPU module and field I/O cards over long, noisy industrial wiring.

IC Role / Device Role / Timing Role: Robust 3-state isolator with ±18 mA input clamp and >2 kV ESD protection for harsh environments.

Use Value: Survives repeated electrostatic discharge events and voltage transients common in factory-floor deployments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74BCT244N	PDIP-20 package; lower I_OL = 64 mA; no distributed V_CC/GND; rated 0°C to 70°C only.	Limited to shorter traces and lower-speed buses; unsuitable for 25-Ω incident-wave driving.	Select SN64BCT25244DWR when 188 mA drive, industrial temperature, or SOIC packaging is required.
SN64BCT25244DW	Identical die and specifications; same SOIC-24 package but different tape-and-reel quantity (25 vs. 2000 pcs/reel) and marking ("6BCT25244").	No functional difference; identical electrical, thermal, and mechanical behavior.	SN64BCT25244DWR and SN64BCT25244DW are functionally interchangeable; DWR denotes tube packaging (25 pcs), DW denotes tape-and-reel.

Compared with SN74BCT244N, SN64BCT25244DWR delivers 194% higher output current and extended temperature range, enabling reliable 25-Ω line driving in industrial settings; versus SN64BCT25244DW, it differs only in packaging format and reel quantity-no design or performance trade-offs.

Availability

SN64BCT25244DWR is available at Aetrix Electronics and suitable for memory address buffering, clock distribution networks, backplane interfacing, and industrial I/O isolation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for SN64BCT25244DWR 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 with emphasis on reliability, precision, and industrial-grade qualification.

The SN64BCT25244DWR belongs to TI's BCT family of BiCMOS bus-interface devices, engineered specifically for high-speed, high-current 3-state driving in memory, clock, and backplane applications where signal integrity and noise immunity are critical.

FAQ

What is the maximum output sink current specified for the SN64BCT25244DWR?

The SN64BCT25244DWR is rated for 188 mA low-level output current (I_OL) per channel under recommended operating conditions (V_CC = 4.5 V). This specification enables direct incident-wave switching of 25-Ω transmission lines without external series termination resistors, making the SN64BCT25244DWR ideal for high-density memory and clock bus applications where signal fidelity is critical.

Does the SN64BCT25244DWR enter high-impedance state during power-up and power-down sequences?

Yes, the SN64BCT25244DWR guarantees high-impedance outputs during power-up and power-down when V_CC is below approximately 3 V. This feature prevents bus contention and unintended signal coupling during supply ramping, which is essential for safe initialization in multi-device systems. The behavior is inherent to the internal BiCMOS circuitry and requires no external control-verified across −40°C to 85°C.

What package type and lead finish does the SN64BCT25244DWR use?

The SN64BCT25244DWR uses a 24-pin SOIC (DW) package with 300-mil width and gull-wing leads. Its lead finish is NiPdAu (nickel-palladium-gold), compliant with RoHS and halogen-free standards (JS709B), and rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH). The package supports standard surface-mount reflow profiles and is compatible with automated assembly processes.

How does the SN64BCT25244DWR minimize simultaneous-switching noise?

The SN64BCT25244DWR minimizes simultaneous-switching noise through six dedicated GND pins and three distributed V_CC pins placed strategically around the SOIC-24 perimeter. This layout reduces ground loop inductance and supply rail disturbance during fast output transitions, directly improving signal integrity in high-speed bus applications. Measured ICCZ remains low at 7–11 mA, further limiting dynamic supply current spikes.

Is the SN64BCT25244DWR pin-compatible with the SN74BCT244 series?

No, the SN64BCT25244DWR is not pin-compatible with the SN74BCT244 series. It uses a 24-pin SOIC (DW) package with dual OE controls, eight independent outputs, and distributed power/ground pins-whereas SN74BCT244 variants are typically 20-pin PDIP or SOIC with single OE and four outputs per section. Layout redesign is required; the SN64BCT25244DWR offers higher drive, better noise immunity, and industrial temperature range.

SN64BCT25244DWR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 64BCT

Package/Case:: 24-SOIC (0.295", 7.50mm 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:: 3-State

Current - Output High, Low:: 80mA, 188mA

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-SOIC

SN64BCT25244DWR FAQ

1.How can I place an order for SN64BCT25244DWR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN64BCT25244DWR 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 SN64BCT25244DWR reliable?

The price and inventory of SN64BCT25244DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN64BCT25244DWR is usually 5 days.

3.What payment methods are accepted for SN64BCT25244DWR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN64BCT25244DWR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN64BCT25244DWR?

SN64BCT25244DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN64BCT25244DWR 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 SN64BCT25244DWR?

For technical support, including SN64BCT25244DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN64BCT25244DWR requirements.

6.How does Aetrix verify that SN64BCT25244DWR is sourced from the original manufacturer or authorized distributors?

All SN64BCT25244DWR 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 SN64BCT25244DWR meets industry standards.

7.What is the process for return or replacement of SN64BCT25244DWR?

All SN64BCT25244DWR units undergo pre-shipment inspection (PSI). If there is an issue with SN64BCT25244DWR, 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 SN64BCT25244DWR part is unused and in its original packaging.

Return procedure for SN64BCT25244DWR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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