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Texas Instruments SN74AHC541PWG4
- Part No.:
- SN74AHC541PWG4
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AHC541PWG4.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,035
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Product details
Overview
SN74AHC541PWG4 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), 8-bit noninverted data path, ±25mA output drive per channel, and operates across –40°C to 125°C.
For engineers reviewing the SN74AHC541PWG4 datasheet, SN74AHC541PWG4 pinout, SN74AHC541PWG4 application, or SN74AHC541PWG4 equivalent, key selection criteria include 3-state timing (tPLZ/tPHZ ≤12ns at 5V), input overvoltage tolerance to 5.5V, low-output ringing due to controlled edge rates, and TSSOP-20 package compatibility with high-density PCB layouts.
Technical Context
The SN74AHC541PWG4 implements dual independent 3-state control logic via two active-low AND-gated enable inputs (OE1/OE2), allowing grouped or split 4-bit output control. Its CMOS AHC-family architecture ensures rail-to-rail output swing, low static current (ICC ≤20µA), and input hysteresis-free operation.
It supports voltage translation: inputs accept up to 5.5V regardless of VCC (2–5.5V), enabling down-translation from 5V logic to 3.3V or 2.5V buses. Propagation delay is load-dependent (tPLH/tPHL = 3.5–8ns at CL = 15–50pF, VCC = 5V), with guaranteed 1ns minimum pulse width and 1ns skew (tsk(o)) between outputs.
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 without level shifters. |
| Output Drive | ±25 mA per output - Sufficient to drive standard TTL loads or moderate-capacitance buses (≤50 pF) without external buffers. |
| Propagation Delay | 3.5 ns (typ) at VCC = 5 V, CL = 15 pF - Supports >100 MHz bus toggle rates in point-to-point configurations. |
| 3-State Enable Time | tPZH/tPLZ ≤ 8 ns (max) at VCC = 5 V - Ensures fast bus release for time-critical arbitration or multiplexing. |
| Input Overvoltage | VI up to 5.5 V - Allows direct interfacing with legacy 5V peripherals while powered from lower VCC (e.g., 3.3V). |
| Operating Temperature | –40°C to 125°C - Qualified for industrial and extended-temperature embedded applications including network infrastructure. |
| ESD Rating | ±2000 V HBM - Meets JEDEC JS-001 for robust handling in automated assembly and field-replaceable modules. |
Pinout & Package
TSSOP-20 package (PW), 6.50 mm × 6.40 mm body size, 0.65 mm lead pitch, thin profile (1.2 mm max height), RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low 3-state enables - Either high disables all 4 associated outputs (Y1–Y4 on OE1; Y5–Y8 on OE2) into high-Z. |
| 2–9 | A1–A8 | Noninverting data inputs - Directly connected to upstream logic; tolerant of 5.5V inputs at any valid VCC. |
| 11–18 | Y1–Y8 | Buffered noninverting outputs - Provide full-rail CMOS swing; each capable of ±25 mA sink/source. |
| 10 | GND | Digital ground reference - Must be low-impedance connection; decoupling capacitor required near VCC pin. |
| 20 | VCC | Power supply - Operates from 2V–5.5V; requires local 0.1 µF ceramic bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2V–5.5V operation enables single-supply compatibility across mixed-voltage system designs without external regulators. |
| Dual Independent 3-State Control | Separate OE1/OE2 pins allow partitioned bus management - e.g., isolate memory address (A1–A4/Y1–Y4) from data lines (A5–A8/Y5–Y8). |
| Input Overvoltage Tolerance | Inputs accept up to 5.5V regardless of VCC - eliminates need for external clamping diodes when interfacing 5V sensors or legacy controllers. |
| Controlled Output Edge Rates | Slow edges reduce EMI and output ringing on unterminated traces - critical for noise-sensitive applications like wearable health monitors. |
| Low Static Power | ICC ≤ 20 µA (max) at VCC = 5.5V - supports battery-powered or always-on subsystems with minimal quiescent drain. |
Applications
| Memory Address Buffering | Industrial I/O Expansion |
|---|---|
|
Use Scenario: Buffering 8-bit microcontroller address bus to drive SRAM or flash memory with capacitive loading >30 pF. IC Role / Device Role / Timing Role: Noninverting octal driver providing isolation, fanout gain, and 3-state bus release during DMA cycles. Use Value: Prevents address skew and timing violations by delivering matched propagation delays (<8ns) and eliminating contention via synchronized OE control. |
Use Scenario: Interfacing PLC CPU module to remote digital I/O cards over backplane traces with 40–60 pF trace + connector capacitance. IC Role / Device Role / Timing Role: Bus transceiver buffer with dual OE control enabling hot-swap-safe I/O enable/disable sequencing. Use Value: Input overvoltage tolerance allows direct 5V sensor interface while operating from 3.3V supply; slow edges suppress radiated emissions in EMC-critical environments. |
| Network Switch Control Plane | Wearable Health Monitor Interface |
|
Use Scenario: Driving configuration registers and status LEDs on 1U rack-mounted Ethernet switch management board. IC Role / Device Role / Timing Role: Low-power octal buffer enabling LED current limiting (via series resistors) and register read-back isolation. Use Value: ±25mA per output supports direct LED drive without discrete transistors; 125°C rating ensures reliability in thermally constrained chassis. |
Use Scenario: Level-shifting and buffering sensor hub signals (ECG, SpO₂ ADC outputs) to ultra-low-power application processor running at 1.8V. IC Role / Device Role / Timing Role: Voltage-translating buffer accepting 3.3V sensor outputs and presenting clean 1.8V-compatible signals to AP GPIOs. Use Value: Input overvoltage tolerance eliminates level shifter ICs; low ICC (<20µA) extends battery life in multi-day wearable deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer/3-state driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APWR | Lower VCC range (1.65–3.6V); higher drive (±24mA); faster tPLH (2.5ns typ @ 3.3V) | Not suitable for 5V systems or mixed 5V/3.3V interfaces; requires strict 3.3V-only supply | Select when operating exclusively at 3.3V and requiring tighter timing margins or lower power at 3.3V. |
| 74AHC244PW,118 | Identical AHC family, same 2–5.5V range and pinout; differs only in marking and packaging source (Nexperia vs TI) | Functionally identical; qualified to same JEDEC specs; minor thermal resistance variance (RθJA = 112°C/W vs 116.8°C/W) | Valid second-source option where TI supply continuity is a concern; verify MSL and reel packaging requirements match. |
Compared with SN74LVC541APWR, SN74AHC541PWG4 supports broader voltage interoperability and 5V legacy compatibility; compared with 74AHC244PW,118, it offers identical functionality with TI-specific qualification and documentation support for aerospace-grade traceability.
Availability
SN74AHC541PWG4 is available at Aetrix Electronics and suitable for industrial control systems, network infrastructure equipment, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AHC541PWG4 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 experience in high-reliability logic and interface solutions.
The SN74AHC541PWG4 belongs to TI's advanced high-speed CMOS (AHC) logic family, engineered for robust bus interfacing in industrial, telecom, and computing applications demanding wide voltage range, noise immunity, and thermal resilience.
FAQ
What is the maximum output current per pin for SN74AHC541PWG4?
The SN74AHC541PWG4 supports ±25 mA continuous output current per Y-pin (Y1–Y8) under recommended operating conditions. This rating applies individually to each output and must not be exceeded simultaneously across all eight outputs beyond the total device limit of ±75 mA through VCC or GND. Exceeding these values risks parametric shift or permanent damage.
Does SN74AHC541PWG4 support 5V-tolerant inputs when powered from 3.3V?
Yes, SN74AHC541PWG4 inputs (A1–A8, OE1, OE2) are rated for VI up to 5.5 V regardless of VCC level. When powered from 3.3 V, it safely accepts 5 V logic signals without external clamping, enabling seamless down-translation in mixed-voltage systems such as FPGA-to-microcontroller interfaces.
What is the function of OE1 and OE2 on SN74AHC541PWG4?
OE1 and OE2 are active-low, independent 3-state enable inputs controlling separate groups of outputs: OE1 governs Y1–Y4, and OE2 governs Y5–Y8. When either is high, its associated four outputs enter high-impedance state. Both must be low for full 8-bit output activation. This allows flexible bus segmentation and arbitration.
Can SN74AHC541PWG4 be used in automotive applications?
SN74AHC541PWG4 is not AEC-Q100 qualified and is specified for industrial temperature range (–40°C to 125°C), not automotive grade (–40°C to 150°C). While it may function in some under-hood or infotainment contexts, TI does not guarantee performance or reliability for automotive safety-critical systems. Use only after full system-level validation.
What package type is SN74AHC541PWG4 supplied in?
SN74AHC541PWG4 is supplied in a 20-pin Thin Shrink Small Outline Package (TSSOP-PW), measuring 6.50 mm × 6.40 mm with 0.65 mm lead pitch. It features RoHS-compliant NiPdAu (NIPDAU) lead finish and is rated MSL Level-1 for unlimited floor life at ≤30°C/60% RH.
SN74AHC541PWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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
SN74AHC541PWG4 FAQ
1.How can I place an order for SN74AHC541PWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHC541PWG4 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 SN74AHC541PWG4 reliable?
The price and inventory of SN74AHC541PWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHC541PWG4 is usually 5 days.
3.What payment methods are accepted for SN74AHC541PWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHC541PWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AHC541PWG4?
SN74AHC541PWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHC541PWG4 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 SN74AHC541PWG4?
For technical support, including SN74AHC541PWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHC541PWG4 requirements.
6.How does Aetrix verify that SN74AHC541PWG4 is sourced from the original manufacturer or authorized distributors?
All SN74AHC541PWG4 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 SN74AHC541PWG4 meets industry standards.
7.What is the process for return or replacement of SN74AHC541PWG4?
All SN74AHC541PWG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHC541PWG4, 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 SN74AHC541PWG4 part is unused and in its original packaging.
Return procedure for SN74AHC541PWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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