My Inquiry
My Account
Texas Instruments SN74ABT541BPWRE4
- Part No.:
- SN74ABT541BPWRE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74ABT541BPWRE4.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,717
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74ABT541BPWRE4 from Texas Instruments is an octal buffer/driver with 3-state outputs, designed for bus line driving and memory address register buffering in industrial and embedded systems. It operates from 4.5 V to 5.5 V, delivers ±32 mA high-drive capability (IOH/ IOL), features dual active-low output-enable inputs (OE1/OE2), and supports –40°C to 85°C operation in a 20-pin TSSOP package.
For engineers reviewing the SN74ABT541BPWRE4 datasheet, SN74ABT541BPWRE4 pinout, SN74ABT541BPWRE4 application, or SN74ABT541BPWRE4 equivalent, key selection criteria include 3-state control logic, high-current drive strength, power-up high-impedance behavior, and compatibility with 5-V TTL/CMOS bus interfaces.
Technical Context
The SN74ABT541BPWRE4 implements an EPIC-IIB™ BiCMOS architecture that reduces power dissipation while maintaining TTL-compatible input thresholds and fast switching. Its dual active-low OE inputs form a two-input AND gate: either OE1 or OE2 high forces all eight Y outputs into high-impedance state.
During power-up/down (VCC between 0–2.1 V), outputs remain in high-impedance state without external biasing; above 2.1 V, OE pins must be pulled to VCC via external resistor to guarantee disable. Propagation delays are specified at CL = 50 pF, with tPLH/tPHL ≤ 3.9 ns typical at VCC = 5 V and TA = 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures robust operation across standard 5-V rail tolerances and noise margins. |
| Output Drive | –32 mA IOH / +64 mA IOL - enables direct interfacing with heavy-loaded buses and legacy TTL loads without external buffers. |
| Propagation Delay | tPLH/tPHL ≤ 3.9 ns (max) at 5 V - supports high-speed data transfer in memory and address bus applications up to ~250 MHz effective rate. |
| 3-State Enable Logic | Active-low dual OE (OE1 ∧ OE2) - allows flexible bus arbitration using shared or independent enable signals across multiple devices. |
| Power-Up Behavior | High-impedance state when VCC < 2.1 V - prevents bus contention during system power sequencing without external circuitry. |
| Input Thresholds | VIH = 2.0 V, VIL = 0.8 V - matches standard TTL logic levels for seamless integration with older microcontrollers and peripherals. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade reliability in non-automotive embedded environments. |
Pinout & Package
TSSOP-20 (PW) package: 6.5 mm × 4.4 mm, 1.2 mm max height, 0.65 mm lead pitch, exposed pad not present, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | A1–A8 Inputs | Noninverting data inputs aligned on left side for PCB layout optimization with bus routing. |
| 9, 10, 11, 12, 13, 14, 15, 16 | Y1–Y8 Outputs | 3-state buffered outputs on right side - facilitates straight-through trace routing across board layers. |
| 17, 18 | OE1, OE2 | Active-low output-enable controls - both must be low to enable outputs; either high disables all Y lines. |
| 19 | VCC | 5-V supply pin - decoupling capacitor placement adjacent to this pin is critical for noise suppression. |
| 20 | GND | Ground reference - shares thermal and electrical return path with all outputs and inputs. |
Key Features
| Feature | Design Value |
|---|---|
| EPIC-IIB™ BiCMOS Process | Reduces static and dynamic power vs. standard bipolar TTL while retaining high drive and speed. |
| High-Impedance During Power Sequencing | Guaranteed Hi-Z when VCC < 2.1 V eliminates need for external OE pull-up during cold start or brownout. |
| Output Ground Bounce Control | VOLP < 1 V at 5 V/25°C - minimizes signal integrity degradation on shared ground planes under switching load. |
| Latch-Up Immunity | Exceeds 500 mA per JEDEC JESD-17 - ensures robustness against transient overvoltage and ESD-induced latch-up. |
| Bus-Friendly Pinout | Inputs and outputs on opposite sides - simplifies layer stacking and reduces crosstalk in dense PCB layouts. |
Applications
| Memory Address Buffering | Industrial Bus Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or flash memory in programmable logic controllers. IC Role / Device Role / Timing Role: Noninverting octal buffer providing level-shifted, high-current drive to overcome capacitive loading of long PCB traces. Use Value: Eliminates timing skew across address bits and prevents setup/hold violations due to consistent propagation delay (≤3.9 ns) and matched output impedance. | Use Scenario: Isolating and strengthening parallel control signals (e.g., chip select, write enable) in factory automation I/O modules. IC Role / Device Role / Timing Role: 3-state driver enabling bidirectional bus sharing among multiple masters via OE-controlled enable/disable. Use Value: Prevents bus contention during hot-swap or firmware update sequences by ensuring deterministic Hi-Z state during power transitions. |
| Legacy System Interfacing | Test Equipment Signal Conditioning |
Use Scenario: Bridging modern 3.3-V FPGA I/O to legacy 5-V TTL peripherals such as LCD controllers or discrete logic arrays. IC Role / Device Role / Timing Role: Level-tolerant buffer accepting 3.3-V CMOS inputs while sourcing/sinking full TTL currents at 5 V. Use Value: Avoids external level shifters and maintains signal integrity through guaranteed VIH/VIL margins and low output impedance. | Use Scenario: Driving calibration reference signals to multiple DUT channels in automated test equipment with synchronized enable control. IC Role / Device Role / Timing Role: Precision timing buffer delivering matched edge rates (5 ns/V input transition) and minimal output skew (≤0.5 ns). Use Value: Enables sub-nanosecond channel-to-channel timing alignment critical for parametric measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ABT244PWRE4 | Octal buffer with separate A→Y and B→Y directional control; identical voltage, drive, and timing specs. | Supports bidirectional bus isolation where direction control is required; SN74ABT541BPWRE4 is unidirectional only. | Select SN74ABT244PWRE4 when bus directionality must be managed per channel group; otherwise SN74ABT541BPWRE4 offers simpler enable logic. |
| SN74LVC244APWR | 3.3-V only (1.65–3.6 V), lower drive (±24 mA), no 5-V tolerance; uses CMOS process, not BiCMOS. | Not suitable for 5-V systems; requires level translation if interfacing with legacy 5-V logic or memory. | Choose SN74LVC244APWR only in pure 3.3-V domains with tight power budgets; SN74ABT541BPWRE4 remains necessary for 5-V bus compatibility. |
Compared with SN74ABT244PWRE4 and SN74LVC244APWR, the SN74ABT541BPWRE4 uniquely combines 5-V operation, high-current drive, and simple dual-OE 3-state control-making it optimal for industrial memory and control bus applications where voltage compatibility and robustness outweigh bidirectional flexibility or ultra-low power needs.
Availability
SN74ABT541BPWRE4 is available at Aetrix Electronics and suitable for industrial control systems, memory subsystems, and legacy interface bridging requiring stable component supply and long-term production continuity.
Supply support for SN74ABT541BPWRE4 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 logic solutions with over 50 years of innovation in industrial, automotive, and communications markets.
The SN74ABT541BPWRE4 belongs to TI's ABT logic family, engineered for high-speed, high-drive 5-V bus interfacing in industrial and computing applications where reliability and signal integrity are critical.
FAQ
What is the operating voltage range for SN74ABT541BPWRE4?
The SN74ABT541BPWRE4 operates from 4.5 V to 5.5 V. This range ensures compatibility with standard 5-V power rails while accommodating typical supply tolerances and noise margins. Operation outside this range may cause functional failure or damage. The device is not rated for 3.3-V-only operation, and applying voltages below 4.5 V risks undefined output states or excessive current draw.
How does the 3-state enable logic work on SN74ABT541BPWRE4?
The SN74ABT541BPWRE4 uses two active-low output-enable inputs (OE1 and OE2) connected internally as an AND gate. Both OE1 and OE2 must be low to enable the Y outputs; if either is high, all eight outputs enter high-impedance state. This design allows flexible bus arbitration-e.g., one OE can serve as global enable, the other as local channel control-without external logic.
Does SN74ABT541BPWRE4 support hot insertion or live bus connection?
Yes, the SN74ABT541BPWRE4 supports safe hot insertion due to its guaranteed high-impedance state during power-up (VCC < 2.1 V) and latch-up immunity exceeding 500 mA per JEDEC JESD-17. However, OE pins must be held low *after* VCC stabilizes to avoid transient glitches. For full hot-swap compliance, external series resistors and TVS protection on Y lines are recommended.
What is the maximum capacitive load SN74ABT541BPWRE4 can drive reliably?
The SN74ABT541BPWRE4 is characterized for CL = 50 pF in switching specifications, with propagation delays and output drive validated under that condition. While it can drive higher capacitance (e.g., >100 pF) due to its ±64 mA IOL, timing margins degrade linearly-tPHL increases ~0.5 ns per 10 pF beyond 50 pF. For loads >75 pF, verify setup/hold timing in final layout simulation using the SN74ABT541BPWRE4 IBIS model.
Is SN74ABT541BPWRE4 pin-compatible with other packages in the ABT541 family?
Yes, the SN74ABT541BPWRE4 shares identical pinout and function with all 20-pin variants of the ABT541 family-including SN74ABT541BDWR (SOIC-DW), SN74ABT541BDBR (SSOP-DB), and SN74ABT541BN (PDIP-N). Mechanical dimensions differ, but PCB footprint and signal routing remain interchangeable across these packages when using appropriate land patterns.
SN74ABT541BPWRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74ABT541BPWRE4 FAQ
1.How can I place an order for SN74ABT541BPWRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT541BPWRE4 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 SN74ABT541BPWRE4 reliable?
The price and inventory of SN74ABT541BPWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT541BPWRE4 is usually 5 days.
3.What payment methods are accepted for SN74ABT541BPWRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ABT541BPWRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ABT541BPWRE4?
SN74ABT541BPWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT541BPWRE4 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 SN74ABT541BPWRE4?
For technical support, including SN74ABT541BPWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT541BPWRE4 requirements.
6.How does Aetrix verify that SN74ABT541BPWRE4 is sourced from the original manufacturer or authorized distributors?
All SN74ABT541BPWRE4 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 SN74ABT541BPWRE4 meets industry standards.
7.What is the process for return or replacement of SN74ABT541BPWRE4?
All SN74ABT541BPWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT541BPWRE4, 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 SN74ABT541BPWRE4 part is unused and in its original packaging.
Return procedure for SN74ABT541BPWRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74ABT541BPWRE4 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…
