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Texas Instruments SN74AHCT541PWR-P
- Part No.:
- SN74AHCT541PWR-P
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74AHCT541PWR-P.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
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Product details
Overview
SN74AHCT541PWR-P from Texas Instruments is an octal non-inverting buffer/driver with 3-state outputs, designed for bus line driving and memory address register buffering in 5-V digital systems. It features TTL-compatible inputs, ±8 mA output drive capability at VCC = 4.5–5.5 V, 6.5 ns max propagation delay (CL = 15 pF), and operates across –40°C to +125°C.
For engineers reviewing the SN74AHCT541PWR-P datasheet, SN74AHCT541PWR-P pinout, SN74AHCT541PWR-P application, or SN74AHCT541PWR-P equivalent, key selection criteria include 3-state control architecture (dual OE inputs), input voltage compatibility with legacy TTL logic, thermal performance in TSSOP-20 (RθJA = 116.8°C/W), and compliance with JESD22 ESD standards (±2000 V HBM).
Technical Context
The SN74AHCT541PWR-P implements two independent 4-bit groups (A1–A4/Y1–Y4 and A5–A8/Y5–Y8), each controlled by a dedicated active-low output enable (OE1/OE2). Its 3-state logic uses dual-input AND gates with inverted enables - either OE high forces corresponding Y outputs into high-impedance mode regardless of A input state.
It operates strictly within 4.5–5.5 V supply range and supports CMOS-level output swing (VOH ≥ 3.8 V at IOH = –8 mA; VOL ≤ 0.44 V at IOL = 8 mA) while accepting TTL-voltage inputs (VIH = 2 V min, VIL = 0.8 V max). Input capacitance is 10 pF, and power dissipation capacitance is 12 pF at 1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5-V logic rails and stable operation under rail tolerance variations. |
| Output Drive | ±8 mA - sufficient to drive multiple CMOS/TTL loads or moderate PCB trace capacitance without signal degradation. |
| Propagation Delay | 6.5 ns max (CL = 15 pF) - enables reliable timing in high-speed address/data bus applications up to ~100 MHz system clock domains. |
| Input Compatibility | TTL-voltage level (VIH ≥ 2 V, VIL ≤ 0.8 V) - allows direct interfacing with legacy 74LS/74F series without level-shifting circuitry. |
| ESD Protection | ±2000 V HBM, ±1000 V CDM - meets industrial handling requirements and reduces risk of field failure during assembly or service. |
| Operating Temperature | –40°C to +125°C - supports extended-temperature industrial and automotive under-hood applications. |
| Power Dissipation | 12 pF Cpd - enables accurate dynamic power estimation (P = Cpd × V² × f) for thermal design in dense layouts. |
Pinout & Package
TSSOP-20 package (PW), 6.50 mm × 6.40 mm body size, 0.65 mm lead pitch, RoHS-compliant NIPDAU finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | OE1, OE2 | Active-low output enables - independently disable first four (Y1–Y4) or last four (Y5–Y8) outputs; tied high via pullup for power-up high-Z safety. |
| 2–9 | A1–A8 | Non-inverting data inputs - accept TTL/CMOS logic levels; must be terminated to VCC or GND if unused to prevent floating states. |
| 10 | GND | Ground reference - single ground pin shared across all eight channels; requires low-inductance connection to minimize noise coupling. |
| 11–18 | Y1–Y8 | 3-state buffered outputs - provide rail-to-rail CMOS-compatible drive; high-impedance when respective OE is high. |
| 20 | VCC | Positive supply - decoupling capacitor (0.1 µF ceramic) required adjacent to pin to suppress switching transients and maintain supply stability. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 4-bit 3-state control | Independent OE1/OE2 pins allow selective disabling of upper/lower nibbles - simplifies partial bus isolation in multi-master systems. |
| TTL-compatible inputs | Accepts 0.8 V / 2.0 V logic thresholds - eliminates need for external level shifters when interfacing with older 74LS or microcontroller GPIOs. |
| High noise immunity | Input clamp current ±20 mA and latch-up rating >250 mA per JESD17 - withstands transient overvoltage and ESD events without functional disruption. |
| Low dynamic power | 12 pF typical power dissipation capacitance - reduces switching current and heat generation in high-frequency bus applications. |
| Thermal robustness | RθJA = 116.8°C/W in TSSOP-20 - enables operation at full speed in compact enclosures without forced airflow or heatsinking. |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Expanding microcontroller GPIO count to drive discrete solenoids, relays, and LED indicators on modular I/O cards. IC Role / Device Role / Timing Role: Octal buffer isolates MCU pins from noisy 24-V industrial loads and provides current gain for direct interface with optocouplers or driver ICs. Use Value: Dual OE control allows software-selectable channel grouping, enabling dynamic reconfiguration of I/O banks without hardware changes. |
Use Scenario: Buffering CAN/LIN transceiver address lines and sensor multiplexer control signals in centralized body electronics units. IC Role / Device Role / Timing Role: Non-inverting driver ensures clean, low-skew propagation of configuration bits to analog switches and EEPROM interfaces. Use Value: –40°C to +125°C rating and ±2000 V HBM ESD support meet automotive AEC-Q100 stress test requirements for under-dash modules. |
| Embedded Memory Interface | Test Equipment Signal Conditioning |
Use Scenario: Driving SRAM or Flash memory address buses in space-constrained edge computing gateways with limited layer count PCBs. IC Role / Device Role / Timing Role: Bus driver with matched propagation delay (tPLH/tPHL ≤ 6.5 ns) minimizes address skew and ensures setup/hold margin for parallel memory access. Use Value: Inputs placed opposite outputs in TSSOP-20 simplify layer routing - reduces vias and crosstalk in high-density 4-layer boards. |
Use Scenario: Level-shifting and fanout buffering for FPGA-based digital pattern generators used in production test fixtures. IC Role / Device Role / Timing Role: 3-state output enables bidirectional signal routing through multiplexed test paths without contention. Use Value: Low 10 pF input capacitance prevents loading of high-speed FPGA outputs, preserving signal integrity up to 100 MHz toggle rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC541APWR | Lower VCC range (1.65–3.6 V), 32 mA drive, 3.8 ns max tPD - optimized for 3.3-V systems, not 5-V TTL compatibility. | Used in modern low-voltage FPGAs and ARM-based controllers; unsuitable where legacy 5-V TTL inputs must be driven. | Select only if system operates at ≤3.6 V and requires higher drive strength or lower delay than SN74AHCT541PWR-P. |
| 74AC541SCX | 5-V AC-series, 24 mA drive, 5.5 ns max tPD, no TTL input compatibility - higher speed but incompatible with 74LS logic thresholds. | Favored in high-speed instrumentation where input levels are strictly CMOS, not mixed-signal TTL/CMOS environments. | Choose when interfacing exclusively with CMOS sources and maximum speed is prioritized over input voltage flexibility. |
Compared with SN74LVC541APWR and 74AC541SCX, the SN74AHCT541PWR-P uniquely balances 5-V operation, TTL input compatibility, and industrial temperature range - making it irreplaceable in legacy-system upgrades and mixed-voltage bus architectures.
Availability
SN74AHCT541PWR-P is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and embedded memory interface designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74AHCT541PWR-P 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 90 years of innovation in industrial, automotive, and communications markets.
The SN74AHCT541PWR-P belongs to TI's 74AHCT logic family - engineered for seamless interoperability between TTL and CMOS systems in harsh-environment applications demanding reliability and wide temperature operation.
FAQ
What is the recommended power supply bypassing scheme for SN74AHCT541PWR-P?
TI recommends a 0.1 µF ceramic capacitor placed as close as possible to the VCC pin (Pin 20) and GND (Pin 10) to suppress high-frequency switching noise. For systems with multiple SN74AHCT541PWR-P devices or high-current loads, paralleling a 1 µF tantalum or aluminum electrolytic capacitor improves low-frequency decoupling. Avoid shared vias between VCC and GND traces to maintain low impedance.
Does SN74AHCT541PWR-P support hot-swap or live-insertion?
No - SN74AHCT541PWR-P is not rated for hot-swap operation. Its absolute maximum ratings specify VI and VO limits relative to GND and VCC, and powering VCC before applying input signals is required to avoid latch-up or damage. For hot-swap applications, external protection circuitry (e.g., series resistors, TVS diodes) and controlled power sequencing must be implemented separately.
How should unused inputs be handled on SN74AHCT541PWR-P?
All unused A1–A8 inputs on SN74AHCT541PWR-P must be tied to either VCC or GND - never left floating. TI specifies that floating inputs cause undefined output states and increased ICC current. OE1 and OE2 should be pulled high (e.g., 10-kΩ to VCC) to ensure outputs remain in high-impedance during power-up. Unused Y outputs may be left unconnected.
What is the meaning of "TSSOP-20" in SN74AHCT541PWR-P package designation?
"TSSOP-20" denotes a Thin Shrink Small Outline Package with 20 leads, 0.65 mm pitch, and 6.50 mm × 6.40 mm body dimensions. The "PW" suffix in SN74AHCT541PWR-P explicitly identifies this variant. It offers higher density than PDIP or SOIC, supports automated SMT assembly, and complies with JEDEC MO-153 standards for thermal and mechanical reliability.
Can SN74AHCT541PWR-P drive a 50-pF load within its specified timing?
Yes - SN74AHCT541PWR-P is characterized for CL = 50 pF: tPLH/tPHL ≤ 9.5 ns, tPZH/tPZL ≤ 12 ns, and tPHZ/tPLZ ≤ 12 ns (VCC = 5 V, TA = –40°C to +125°C). These values are guaranteed across temperature and voltage ranges, confirming reliable operation into typical PCB trace + connector + receiver capacitance loads without timing violation.
SN74AHCT541PWR-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHCT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74AHCT541PWR-P FAQ
1.How can I place an order for SN74AHCT541PWR-P through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHCT541PWR-P 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 SN74AHCT541PWR-P reliable?
The price and inventory of SN74AHCT541PWR-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHCT541PWR-P is usually 5 days.
3.What payment methods are accepted for SN74AHCT541PWR-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHCT541PWR-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AHCT541PWR-P?
SN74AHCT541PWR-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHCT541PWR-P 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 SN74AHCT541PWR-P?
For technical support, including SN74AHCT541PWR-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHCT541PWR-P requirements.
6.How does Aetrix verify that SN74AHCT541PWR-P is sourced from the original manufacturer or authorized distributors?
All SN74AHCT541PWR-P 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 SN74AHCT541PWR-P meets industry standards.
7.What is the process for return or replacement of SN74AHCT541PWR-P?
All SN74AHCT541PWR-P units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHCT541PWR-P, 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 SN74AHCT541PWR-P part is unused and in its original packaging.
Return procedure for SN74AHCT541PWR-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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