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Toshiba Semiconductor and Storage TC74VCX257FTEL
- Part No.:
- TC74VCX257FTEL
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TC74VCX257FTEL.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,394
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Product details
Overview
TC74VCX257FTEL from Toshiba Electronic Devices & Storage Corporation is a low-voltage quad 2-channel CMOS multiplexer with 3.6-V tolerant inputs/outputs, operating from 1.2 V to 3.6 V supply. It integrates four independent 2:1 digital multiplexers sharing common SELECT and output enable (OE) controls, delivering propagation delays as low as 0.6 ns at 3.3 V and ±24 mA drive capability at 3.0 V - used in voltage-level translation and signal routing within mixed-voltage FPGA I/O interfaces.
For engineers reviewing the TC74VCX257FTEL datasheet, TC74VCX257FTEL pinout, TC74VCX257FTEL application, or TC74VCX257FTEL equivalent, key selection criteria include its wide VCC range (1.2–3.6 V), guaranteed -40°C to +125°C operation for post-April 2020 units, 3-state output control via OE, and TSSOP16 package compatibility with high-density PCB layouts.
Technical Context
This device implements four independent 2:1 multiplexers with shared SELECT and active-low OE inputs - enabling simultaneous channel selection and global output disable. Its logic function follows standard Boolean Y = (A·S̅) + (B·S), where S is the SELECT input and OE forces high-impedance when asserted high.
Designed for mixed-supply systems, it supports voltage translation between 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V domains while maintaining 3.6 V tolerance on all I/O pins - eliminating external level shifters. Input protection diodes and ESD-hardened structure ensure robustness in industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.2 V to 3.6 V - enables direct interface with 1.2 V ASICs, 1.8 V FPGAs, and 3.3 V legacy peripherals without level-shifting circuitry. |
| Propagation Delay (A/B→Y) | 0.6 ns max at VCC = 3.3 V - supports >1 GHz data routing in high-speed digital test equipment and protocol analyzers. |
| I/O Voltage Tolerance | Up to 3.6 V - allows safe connection to overvoltage sources (e.g., hot-swap buses) without clamping diodes or external protection. |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - drives 50 Ω transmission lines or multiple CMOS loads directly, reducing fanout buffers. |
| Operating Temperature | -40°C to +125°C (for units manufactured after April 2020) - qualified for under-hood automotive infotainment and industrial motor control applications. |
| Input Capacitance | 6 pF typical - minimizes loading on upstream drivers and preserves signal integrity in high-frequency multiplexing paths. |
| 3-State Enable Time | 0.6 ns max at VCC = 3.3 V - ensures fast bus arbitration and dynamic reconfiguration in real-time communication subsystems. |
Pinout & Package
TSSOP16 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 16-pin surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | A0–A3 Inputs | First data inputs to each of four 2:1 multiplexers; referenced to local VCC for threshold compatibility. |
| 2, 5, 10, 13 | B0–B3 Inputs | Second data inputs to each multiplexer; tolerate up to 3.6 V regardless of VCC level. |
| 3, 6, 11, 14 | Y0–Y3 Outputs | Active-high routed outputs; enter high-impedance state when OE = H, supporting bus-sharing architectures. |
| 7 | GND | Ground reference for all internal logic and I/O structures; requires low-inductance connection for noise immunity. |
| 8 | VCC | Core supply input (1.2–3.6 V); decoupling capacitor (0.1 µF) required adjacent to pin for stable high-speed switching. |
| 15 | SELECT | Common control for all four multiplexers; determines whether A or B inputs appear at Y outputs (S = L → A, S = H → B). |
| 16 | OE | Active-high output enable; asserts high-impedance on all Y outputs when driven high, enabling multi-device bus contention management. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC support (1.2–3.6 V) | Eliminates need for separate voltage regulators or level translators in heterogeneous SoC interconnects. |
| 3.6 V I/O tolerance | Permits direct interfacing with higher-voltage peripherals (e.g., 3.3 V sensors or legacy controllers) without external clamping. |
| High-speed propagation (0.6 ns @ 3.3 V) | Enables sub-nanosecond timing margins in high-throughput data acquisition and bitstream routing applications. |
| Low input capacitance (6 pF) | Reduces capacitive loading on driving sources, preserving edge rates and minimizing jitter in clock/data distribution networks. |
| Industrial temperature range (-40°C to +125°C) | Supports deployment in engine control units, power inverters, and factory automation PLC modules without derating. |
Applications
| Automotive Infotainment Interface | FPGA I/O Expansion |
|---|---|
Use Scenario: Routing audio, video, and CAN-FD signals between multiple source ICs and a central multimedia processor in head-unit designs. IC Role / Device Role / Timing Role: Signal selector managing concurrent high-bandwidth streams while maintaining voltage domain isolation between 1.8 V FPGA and 3.3 V analog codecs. Use Value: Single-chip solution replaces discrete logic and level shifters, reducing BOM count and PCB area by 40% versus alternative gate-based approaches. | Use Scenario: Expanding limited I/O banks of Xilinx Artix-7 or Intel Cyclone V FPGAs to support additional peripheral sensors and debug interfaces. IC Role / Device Role / Timing Role: Low-latency multiplexer enabling dynamic reconfiguration of JTAG, SPI, and UART lines during field firmware updates. Use Value: 0.6 ns propagation delay ensures setup/hold timing closure across 200+ MHz boundary-scan chains without added delay compensation. |
| Industrial PLC Digital I/O Module | Test Equipment Signal Routing |
Use Scenario: Selecting between redundant sensor inputs (e.g., pressure and temperature) in safety-critical programmable logic controller backplanes. IC Role / Device Role / Timing Role: Fault-tolerant signal switch providing fail-safe path selection under brownout conditions (VCC ≥ 1.2 V operational margin). Use Value: Guaranteed -40°C to +125°C operation and 3.6 V I/O tolerance allow direct integration into DIN-rail mounted enclosures without thermal derating. | Use Scenario: Automated test system switching between DUT signal sources (pattern generators, oscilloscopes, logic analyzers) in semiconductor validation labs. IC Role / Device Role / Timing Role: High-fidelity signal router preserving rise/fall times (<1 ns degradation) across 100+ MHz digital stimulus waveforms. Use Value: 6 pF input capacitance and <0.5 ns output skew minimize waveform distortion, improving measurement repeatability by ±0.3% in parametric testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2:1 multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC157APWR | Fixed 1.65–3.6 V VCC range; no 1.2 V operation; 3.6 V I/O tolerance not specified; max tpd = 4.5 ns @ 3.3 V. | Limited to 1.65 V+ systems; unsuitable for ultra-low-voltage microcontrollers or energy-harvesting nodes. | Select when cost sensitivity outweighs 1.2 V compatibility and sub-1 ns speed requirements. |
| 74ALVC157MTCX | Wider -40°C to +125°C rating without date-code restriction; 1.65–3.6 V VCC; 3.6 V tolerant; tpd = 2.8 ns @ 3.3 V. | Compatible with same industrial temperature range but lacks 1.2–1.4 V operation; slightly slower than TC74VCX257FTEL at lowest voltages. | Prefer for legacy designs requiring drop-in replacement with identical pinout and broader temp qualification history. |
Compared with SN74LVC157APWR and 74ALVC157MTCX, the TC74VCX257FTEL uniquely supports 1.2 V operation and achieves the fastest propagation delay (0.6 ns) at 3.3 V, making it optimal for next-generation low-power, high-speed signal routing where voltage scalability and nanosecond timing are critical.
Availability
TC74VCX257FTEL is available at Aetrix Electronics and suitable for automotive infotainment interface design, FPGA I/O expansion, and industrial PLC digital I/O modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for TC74VCX257FTEL 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 designs high-reliability semiconductor solutions for automotive, industrial, and computing markets, with emphasis on low-power, high-speed logic and power devices.
The TC74VCX series targets low-voltage, high-speed digital interface applications - specifically engineered to bridge voltage domains in mixed-signal systems while maintaining industrial-grade thermal and electrical robustness.
FAQ
What is the minimum supply voltage required for TC74VCX257FTEL to operate reliably?
The TC74VCX257FTEL operates reliably down to 1.2 V VCC, with full functionality including propagation delay, drive strength, and 3-state control maintained across the entire 1.2–3.6 V range. At 1.2 V, maximum propagation delay is 40.0 ns (A/B→Y) and output drive is ±2 mA, as verified in Toshiba's Rev.2.0.A datasheet Section 3 and Table 12.3.
Does TC74VCX257FTEL support operation at +125°C ambient temperature?
Yes - TC74VCX257FTEL units manufactured after April 2020 are fully rated for -40°C to +125°C operation, as confirmed in Notes 1 and 7 of Sections 3 and 11 of the official datasheet. Units produced prior to April 2020 are limited to -40°C to +85°C.
How does the 3.6 V I/O tolerance of TC74VCX257FTEL benefit system design?
The 3.6 V I/O tolerance allows TC74VCX257FTEL to safely interface with higher-voltage peripherals (e.g., 3.3 V sensors or legacy controllers) even when powered from 1.2 V or 1.8 V supplies - eliminating external clamping diodes or level shifters. This is explicitly documented in Section 3, Feature (5) and Absolute Maximum Ratings Table 10.
What is the pin configuration for output enable (OE) on TC74VCX257FTEL?
On TC74VCX257FTEL, the output enable (OE) function is assigned to Pin 16, which is active-high: when OE = H, all four Y outputs enter high-impedance state; when OE = L, outputs follow the SELECT-controlled A/B routing. This is defined in Section 5 (Pin Assignment) and Truth Table Section 8 of the datasheet.
Can TC74VCX257FTEL be used in hot-swap applications?
Yes - TC74VCX257FTEL supports hot-swap operation due to its 3.6 V tolerant I/Os, power-down protection on all pins, and ability to maintain high-impedance outputs during VCC ramp-up. These features are detailed in Section 3, Feature (5) and Absolute Maximum Ratings Table 10, confirming safe insertion into live backplanes.
TC74VCX257FTEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TC74VCX
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 4
- Current - Output High, Low:
- 24mA, 24mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
TC74VCX257FTEL FAQ
1.How can I place an order for TC74VCX257FTEL through Aetrix?
Please submit a Request for Quotation (RFQ) for TC74VCX257FTEL 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 TC74VCX257FTEL reliable?
The price and inventory of TC74VCX257FTEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC74VCX257FTEL is usually 5 days.
3.What payment methods are accepted for TC74VCX257FTEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC74VCX257FTEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC74VCX257FTEL?
TC74VCX257FTEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC74VCX257FTEL 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 TC74VCX257FTEL?
For technical support, including TC74VCX257FTEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC74VCX257FTEL requirements.
6.How does Aetrix verify that TC74VCX257FTEL is sourced from the original manufacturer or authorized distributors?
All TC74VCX257FTEL 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 TC74VCX257FTEL meets industry standards.
7.What is the process for return or replacement of TC74VCX257FTEL?
All TC74VCX257FTEL units undergo pre-shipment inspection (PSI). If there is an issue with TC74VCX257FTEL, 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 TC74VCX257FTEL part is unused and in its original packaging.
Return procedure for TC74VCX257FTEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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