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Toshiba Semiconductor and Storage 74VHCT541AFT
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- Part No.:
- 74VHCT541AFT
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74VHCT541AFT.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:18,809
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Product details
Overview
74VHCT541AFT from Toshiba Electronic Devices & Storage Corporation is a non-inverting octal bus buffer with 3-state outputs, designed for bidirectional data bus interfacing in 5 V TTL-compatible systems. It features 5.4 ns typical propagation delay at 5.0 V, ±20 mA output drive capability, AEC-Q100 qualified reliability, and operates across -40 °C to +125 °C - enabling use in automotive body control modules requiring robust level translation between 3.3 V logic and 5 V buses.
For engineers reviewing the 74VHCT541AFT datasheet, 74VHCT541AFT pinout, 74VHCT541AFT application, or 74VHCT541AFT equivalent, key selection criteria include its non-inverting logic function, TSSOP20B package footprint, 3-state enable control via dual G1/G2 inputs, and guaranteed 5.5 V tolerant I/Os independent of VCC - critical for hot-swap and mixed-voltage system design.
Technical Context
The 74VHCT541AFT implements eight independent non-inverting buffer channels, each with separate 3-state control via two active-low enable inputs (G1 and G2) that must both be low to activate outputs. Its C2MOS silicon gate process delivers TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) while maintaining CMOS-level quiescent current (ICC ≤ 4.0 µA).
It supports true 5.5 V absolute maximum I/O voltage tolerance regardless of VCC, enabling safe operation during power sequencing mismatches or battery backup scenarios. Propagation delays are balanced (tPLH ≈ tPHL), and output skew is limited to 9.4 ns max across all channels under 15 pF load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Non-inverting octal buffer with 3-state outputs |
| Propagation Delay | 5.4 ns typ. at VCC = 5.0 V, CL = 15 pF - enables >100 MHz bus operation |
| Supply Voltage | 4.5 V to 5.5 V - compatible with regulated 5 V rails and tolerates ±5% variation |
| I/O Voltage Tolerance | −0.5 V to 7.0 V - allows safe interfacing with 3.3 V, 5 V, and overvoltage transients |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive standard TTL loads and moderate PCB traces |
| Quiescent Current | 4.0 µA max at TA = 25 °C - supports ultra-low-power standby modes |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive applications |
| AEC-Q100 Grade | Compliant per Rev. H - validated for automotive electronics reliability requirements |
Pinout & Package
74VHCT541AFT is housed in a 20-pin TSSOP20B package (4.4 mm × 6.5 mm, 0.65 mm pitch), optimized for high-density PCB layouts and automated assembly. Pin assignments follow JEDEC-standard 74-series bus buffer layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | G1, G2 (Active-Low Enables) | Both must be LOW to enable outputs; HIGH on either forces all Yn into high-impedance state |
| 2–9 | An (Inputs) | Eight non-inverting data inputs; TTL-compatible thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) |
| 11–18 | Yn (Outputs) | Eight buffered, 3-state outputs; tolerate up to 5.5 V regardless of VCC |
| 10 | GND | Ground reference for all logic and I/O circuits |
| 20 | VCC | Positive supply rail (4.5–5.5 V); powers internal logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Non-inverting 3-state buffering | Preserves signal polarity while enabling bidirectional bus sharing without inversion artifacts |
| Dual independent enable inputs | Allows hierarchical bus control - e.g., G1 for subsystem enable, G2 for local arbitration |
| 5.5 V tolerant I/Os | Eliminates need for external level-shifting components when interfacing 3.3 V controllers to 5 V peripherals |
| Balanced propagation delays | tPLH ≈ tPHL minimizes duty-cycle distortion in clocked data paths and timing-critical interfaces |
| Power-down protection | Prevents latch-up and damage during unpowered hot-insertion or mismatched supply sequencing |
Applications
| Automotive Body Control Unit | Industrial PLC I/O Module |
|---|---|
Use Scenario: Interfacing a 3.3 V microcontroller to legacy 5 V sensor/actuator buses in door module ECUs. IC Role / Device Role / Timing Role: Non-inverting level-translating bus buffer enabling bidirectional data flow between MCU and LIN-compatible peripherals. Use Value: Eliminates discrete level shifters; AEC-Q100 qualification ensures reliability in temperature-cycled vehicle environments. | Use Scenario: Isolating CPU bus signals from field-side digital I/O expansion cards in modular PLC backplanes. IC Role / Device Role / Timing Role: Octal 3-state buffer providing controlled bus access and noise isolation between processor and peripheral slots. Use Value: Dual G1/G2 enables slot-specific arbitration; 5.5 V I/O tolerance prevents damage from field-wiring transients. |
| Medical Diagnostic Equipment Backplane | Test & Measurement Instrumentation |
Use Scenario: Buffering configuration data between FPGA and multiple 5 V analog front-end ASICs in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-skew, non-inverting bus driver ensuring synchronized register writes across parallel ADC/DAC channels. Use Value: 9.4 ns max output skew guarantees sub-10 ns channel-to-channel timing alignment for coherent sampling. | Use Scenario: Driving high-impedance scope probe calibration signals from a 3.3 V FPGA to 5 V reference circuitry. IC Role / Device Role / Timing Role: Precision 3-state buffer with tight VOH/VOL specs (VOH ≥ 4.4 V, VOL ≤ 0.1 V) for accurate voltage-level generation. Use Value: Guaranteed 4.4 V min VOH at 4.5 V VCC ensures clean TTL-high recognition by legacy test gear. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal non-inverting bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT541PW | Same logic function and pinout; 7.5 ns max tPD at 5 V (vs. 7.4 ns for 74VHCT541AFT); wider −40 °C to +85 °C temp range | Not AEC-Q100 qualified; lacks 125 °C extended temperature support | Select for commercial-grade cost-sensitive designs where automotive qualification is unnecessary |
| 74LVC541APW | 3.3 V only supply (1.65–3.6 V); 5 V tolerant inputs but not outputs; 3.8 ns typ. tPD | Cannot drive 5 V loads directly; requires external pull-ups or level translators for 5 V bus termination | Select for 3.3 V-native systems needing higher speed and lower power, with no 5 V output requirement |
Compared with SN74HCT541PW and 74LVC541APW, the 74VHCT541AFT uniquely combines AEC-Q100 compliance, 5 V output drive, 5.5 V I/O tolerance, and −40 °C to +125 °C operation - making it the only option qualified for automotive under-hood bus interfacing without external protection components.
Availability
74VHCT541AFT is available at Aetrix Electronics and suitable for automotive ECU development, industrial PLC backplane design, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74VHCT541AFT 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
Toshiba Electronic Devices & Storage Corporation is a global semiconductor manufacturer specializing in power devices, logic ICs, and storage solutions, with deep expertise in automotive-qualified components and high-reliability industrial semiconductors.
The 74VHCT series targets high-speed, low-power bus interface applications in automotive and industrial systems, emphasizing robustness across wide temperature ranges, mixed-voltage interoperability, and AEC-Q100 compliance for mission-critical control functions.
FAQ
What is the logic function and output behavior of the 74VHCT541AFT?
The 74VHCT541AFT is an octal non-inverting bus buffer with 3-state outputs. When both G1 and G2 inputs are low, the Yn outputs replicate the An inputs without inversion. If either G1 or G2 is high, all Yn outputs enter high-impedance (Hi-Z) state. This behavior enables controlled bidirectional bus sharing in systems such as automotive body control units and industrial PLC backplanes.
Does the 74VHCT541AFT support level shifting between 3.3 V and 5 V domains?
Yes, the 74VHCT541AFT supports level shifting: its inputs are TTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V), allowing direct connection to 3.3 V logic outputs, and its outputs drive full 5 V logic levels (VOH ≥ 4.4 V at VCC = 4.5 V). Additionally, all I/O pins tolerate −0.5 V to 7.0 V regardless of VCC, enabling safe interfacing without external level shifters in mixed-voltage systems.
What is the operating temperature range and automotive qualification status of the 74VHCT541AFT?
The 74VHCT541AFT is rated for −40 °C to +125 °C operation and is AEC-Q100 qualified per Revision H. This certification validates its reliability for automotive applications including engine control, body electronics, and ADAS subsystems where extended temperature performance and failure-mode robustness are mandatory.
How does the 74VHCT541AFT handle power supply sequencing and hot insertion?
The 74VHCT541AFT incorporates power-down protection on all inputs and outputs, allowing 0–5.5 V to be applied to any pin regardless of VCC state. This prevents latch-up or damage during hot board insertion, battery backup transitions, or mismatched supply ramp-up sequences - a critical feature for modular industrial and automotive systems requiring field-replaceable modules.
What package type and pin compatibility does the 74VHCT541AFT use?
The 74VHCT541AFT uses the TSSOP20B package (20-pin, 4.4 mm × 6.5 mm, 0.65 mm pitch) and is pin- and function-compatible with industry-standard 74-series octal buffers including 74ACT541, 74HCT541, and 74AHCT541. This compatibility simplifies drop-in replacement and leverages existing PCB footprints and layout practices.
74VHCT541AFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- 74VHCT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
74VHCT541AFT FAQ
1.How can I place an order for 74VHCT541AFT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHCT541AFT 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 74VHCT541AFT reliable?
The price and inventory of 74VHCT541AFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHCT541AFT is usually 5 days.
3.What payment methods are accepted for 74VHCT541AFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHCT541AFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHCT541AFT?
74VHCT541AFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHCT541AFT 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 74VHCT541AFT?
For technical support, including 74VHCT541AFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHCT541AFT requirements.
6.How does Aetrix verify that 74VHCT541AFT is sourced from the original manufacturer or authorized distributors?
All 74VHCT541AFT 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 74VHCT541AFT meets industry standards.
7.What is the process for return or replacement of 74VHCT541AFT?
All 74VHCT541AFT units undergo pre-shipment inspection (PSI). If there is an issue with 74VHCT541AFT, 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 74VHCT541AFT part is unused and in its original packaging.
Return procedure for 74VHCT541AFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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