My Inquiry
My Account
Texas Instruments SN74AHC541PWRE4
- Part No.:
- SN74AHC541PWRE4
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AHC541PWRE4.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,003
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74AHC541PWRE4 from Texas Instruments is an octal noninverting buffer/driver with 3-state outputs, designed for bus line driving and memory address register buffering in 2V–5.5V systems. It features dual active-low output-enable inputs (OE1/OE2), 20-pin TSSOP package, ±25mA output drive per channel, and propagation delays as low as 3.5ns at 5V.
For engineers reviewing the SN74AHC541PWRE4 datasheet, SN74AHC541PWRE4 pinout, SN74AHC541PWRE4 application, or SN74AHC541PWRE4 equivalent, key selection factors include its wide VCC range, 3-state control architecture, input overvoltage tolerance to 5.5V, and verified performance in server backplanes, PC I/O expansion, telecom infrastructure interfaces, and industrial control buses.
Technical Context
The SN74AHC541PWRE4 implements eight independent noninverting buffers, each with separate input (A1–A8) and output (Y1–Y8) pins arranged on opposite sides of the TSSOP-20 package to simplify PCB routing. Its 3-state control uses a two-input AND gate with active-low OE1 and OE2 - either high forces all corresponding outputs into high-impedance mode.
It operates across –40°C to +125°C, supports down-translation (e.g., 5.5V-tolerant inputs at 3.3V VCC), and delivers controlled edge rates (100 ns/V at 3.3V, 20 ns/V at 5V) to minimize output ringing - a critical feature for noise-sensitive bus applications without external damping resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - enables interoperability across 2.5V, 3.3V, and 5V logic domains with single-supply operation. |
| Output Drive | ±25 mA per output - sufficient to drive standard CMOS loads and moderate capacitive buses without external buffers. |
| tPLH / tPHL (5V) | 3.5 ns typical (CL = 15 pF) - ensures fast signal propagation in high-speed digital interfaces like memory address latching. |
| Input Voltage Tolerance | Up to 5.5 V regardless of VCC - allows safe interfacing with higher-voltage controllers while powered from lower VCC rails. |
| ESD Rating (HBM) | ±2000 V - meets industrial-grade robustness requirements for handling and board-level reliability. |
| Operating Temperature | –40°C to +125°C - qualified for extended-temperature industrial and automotive under-hood applications. |
| ICC (Quiescent) | 4 µA typical at 5.5V - ultra-low static power consumption ideal for battery-backed or always-on subsystems. |
Pinout & Package
TSSOP-20 (PW) package: 6.50 mm × 6.40 mm body size, 0.65 mm lead pitch, surface-mount, RoHS-compliant NIPDAU finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output enable inputs - independently control first four and last four buffers; either high disables all associated outputs. |
| 2–9 | A1–A8 | Buffer input terminals - accept 5.5V-tolerant logic signals; must be tied high/low if unused to prevent floating states. |
| 10 | GND | Ground reference - requires low-inductance connection to system ground plane for noise immunity and stable switching. |
| 11–18 | Y1–Y8 | Noninverting 3-state outputs - present A1–A8 when enabled; enter high-Z state when OE1 or OE2 is high. |
| 20 | VCC | Power supply pin - requires local 0.1 µF ceramic bypass capacitor placed within 2 mm of pin for transient current delivery. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2V–5.5V operation enables direct use in mixed-voltage systems without level shifters. |
| Dual Independent OE Control | OE1 controls Y1–Y4; OE2 controls Y5–Y8 - allows partial bus gating and reduced contention in segmented data paths. |
| Input Overvoltage Tolerance | Inputs withstand up to 5.5V even at VCC = 2V - eliminates need for external clamping diodes in voltage translation scenarios. |
| Controlled Edge Rates | 100 ns/V (3.3V) and 20 ns/V (5V) input transition rate limits - inherently suppresses output ringing and EMI without series resistors. |
| Low Power Consumption | 4 µA max ICC at 5.5V - reduces thermal load and extends runtime in power-constrained embedded designs. |
Applications
| Server Backplane Interface | PC I/O Expansion Bus |
|---|---|
Use Scenario: Driving parallel address/data lines between CPU and peripheral controller on high-density server motherboard backplanes. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control isolates bus segments during arbitration; dual OE allows selective gating of memory vs. I/O address lanes. Use Value: 3.5ns propagation delay at 5V ensures timing margin for 100+ MHz address strobes; ±25mA drive sustains signal integrity across 10+ cm traces. |
Use Scenario: Buffering LPC or legacy PCI bus control signals (e.g., FRAME#, IRDY#) in desktop/notebook chipset I/O hubs. IC Role / Device Role / Timing Role: Octal driver provides fanout and noise isolation between southbridge and add-in cards; TSSOP-20 footprint saves space on crowded I/O daughterboards. Use Value: Input overvoltage tolerance permits direct connection to 5V legacy peripherals while VCC runs at 3.3V - no level-shifter IC required. |
| Telecom Line Card Control | Industrial PLC I/O Module |
Use Scenario: Interfacing FPGA configuration logic to hot-swap controller and power sequencing ICs on telecom line cards. IC Role / Device Role / Timing Role: 3-state buffers isolate FPGA I/O during power-up/down sequences; OE pins synchronized to power-good signals ensure glitch-free initialization. Use Value: –40°C to +125°C rating guarantees reliable operation in sealed, fanless telecom enclosures; ±2000V HBM protects against field-installation ESD events. |
Use Scenario: Isolating microcontroller GPIOs from relay driver arrays and analog sensor multiplexers in modular PLC base units. IC Role / Device Role / Timing Role: Buffers decouple noisy high-current outputs from sensitive MCU pins; dual OE enables software-controlled bank isolation during diagnostics. Use Value: Low 4µA quiescent current minimizes standby power in always-on industrial controllers; 2V minimum VCC supports brown-out tolerant operation during mains dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHCT541PWRE4 | CMOS-to-TTL compatible inputs (VIH = 2.0V min at VCC = 4.5V); identical pinout and 3-state logic. | Better suited for interfacing with legacy 5V TTL logic where input thresholds must match TTL levels. | Select when interfacing with older 5V TTL systems; avoid if only CMOS-compatible thresholds are needed. |
| SN74LVC541APWRE4 | Narrower VCC range (1.65V–3.6V); higher drive (±24mA), faster tPLH (2.5ns @ 3.3V), but no 5.5V input tolerance. | Optimized for modern low-voltage portable electronics; incompatible with 5V signal domains. | Prefer for 3.3V-only designs requiring lowest propagation delay and smallest package; not drop-in for mixed-voltage use. |
Compared with SN74AHCT541PWRE4 and SN74LVC541APWRE4, the SN74AHC541PWRE4 uniquely balances wide VCC flexibility (2V–5.5V), 5.5V-tolerant inputs, and industrial temperature range - making it the only choice for mixed-voltage, extended-temp, and legacy-compatible bus interface roles.
Availability
SN74AHC541PWRE4 is available at Aetrix Electronics and suitable for server backplane interfaces, PC I/O expansion buses, and telecom infrastructure control circuits requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for SN74AHC541PWRE4 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 connectivity technologies, with decades of leadership in logic IC design and manufacturing.
The SN74AHC541PWRE4 belongs to TI's advanced high-speed CMOS (AHC) logic family, engineered for low-power, high-noise-immunity bus interfacing in industrial, computing, and communications equipment.
FAQ
What is the maximum output current per pin for SN74AHC541PWRE4?
The SN74AHC541PWRE4 supports ±25 mA continuous output current per Y pin (Y1–Y8) under recommended operating conditions. This rating applies at VCC = 5V and TA ≤ 125°C. Exceeding this limit risks latch-up or parametric shift. Total device output current must not exceed ±75 mA across all active outputs simultaneously, as specified in Absolute Maximum Ratings.
Does SN74AHC541PWRE4 support 5V-tolerant inputs when powered from 3.3V?
Yes, SN74AHC541PWRE4 inputs tolerate voltages up to 5.5 V regardless of VCC level. When VCC = 3.3 V, A1–A8 can safely accept 5V logic signals without damage or level-shifting circuitry - a key feature enabling seamless interface between 3.3V microcontrollers and 5V peripherals in mixed-voltage systems.
How are the output-enable pins OE1 and OE2 used in SN74AHC541PWRE4?
In SN74AHC541PWRE4, OE1 controls outputs Y1–Y4 and OE2 controls Y5–Y8. Both are active-low: pulling either high places its associated four outputs in high-impedance state. This dual-OE architecture allows independent gating of two logical bus segments - for example, separating memory address and I/O control lines - reducing contention and simplifying arbitration logic.
What is the propagation delay of SN74AHC541PWRE4 at 3.3V supply?
At VCC = 3.3 V ± 0.3 V and CL = 15 pF, SN74AHC541PWRE4 exhibits typical propagation delays of 5 ns (tPLH/tPHL) and 6–7 ns for enable/disable transitions (tPZH/tPHZ). These values are guaranteed over –40°C to +125°C, with worst-case max of 8.5 ns for A→Y and 12 ns for OE→Y under same conditions - supporting reliable timing in 100+ MHz bus applications.
Is SN74AHC541PWRE4 RoHS compliant and what is its moisture sensitivity level?
Yes, SN74AHC541PWRE4 is RoHS-compliant with NIPDAU lead finish and rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH), per JEDEC J-STD-020. Its TSSOP-20 package requires no baking prior to reflow, simplifying SMT assembly. The part marking "HA541" appears on the top surface, and full traceability is maintained through TI's production lot coding.
SN74AHC541PWRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- 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:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74AHC541PWRE4 FAQ
1.How can I place an order for SN74AHC541PWRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHC541PWRE4 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 SN74AHC541PWRE4 reliable?
The price and inventory of SN74AHC541PWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHC541PWRE4 is usually 5 days.
3.What payment methods are accepted for SN74AHC541PWRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHC541PWRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AHC541PWRE4?
SN74AHC541PWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHC541PWRE4 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 SN74AHC541PWRE4?
For technical support, including SN74AHC541PWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHC541PWRE4 requirements.
6.How does Aetrix verify that SN74AHC541PWRE4 is sourced from the original manufacturer or authorized distributors?
All SN74AHC541PWRE4 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 SN74AHC541PWRE4 meets industry standards.
7.What is the process for return or replacement of SN74AHC541PWRE4?
All SN74AHC541PWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHC541PWRE4, 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 SN74AHC541PWRE4 part is unused and in its original packaging.
Return procedure for SN74AHC541PWRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74AHC541PWRE4 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…
