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Toshiba Semiconductor and Storage 74VHC157FT
- Part No.:
- 74VHC157FT
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74VHC157FT.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16TSSOPB
- Quantity:
- Payment:
- Shipping:
Inventory:6,835
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Product details
Overview
74VHC157FT from Toshiba Electronic Devices & Storage Corporation is a quad 2-channel CMOS multiplexer with common select and strobe inputs, operating from 2.0 V to 5.5 V supply, delivering 4.1 ns typical propagation delay at 5 V, 8 mA output drive, and AEC-Q100 qualified for automotive applications including body control modules and infotainment signal routing.
For engineers reviewing the 74VHC157FT datasheet, 74VHC157FT pinout, 74VHC157FT application, or 74VHC157FT equivalent, this device supports voltage-level translation between 3 V and 5 V systems, features power-down input protection, balanced tPLH/tPHL timing, and operates reliably across –40 °C to +125 °C ambient temperature.
Technical Context
The 74VHC157FT implements four independent 2:1 digital multiplexers sharing a single SELECT line and a common STROBE (ST) enable input. When ST is high, all Y outputs are forced low regardless of SELECT or data inputs - enabling synchronous bus gating.
Its C2MOS silicon gate process delivers TTL-compatible speed with CMOS power efficiency: ICC ≤ 4.0 µA max at 25 °C and ≤ 80.0 µA max over full temperature range, while maintaining VIH ≥ VCC × 0.7 and VIL ≤ VCC × 0.3 across 2.0–5.5 V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - enables interoperability across 3.3 V and 5 V logic domains and battery-backed dual-supply systems. |
| Propagation Delay (A/B → Y) | 4.1 ns typ. at VCC = 5 V - supports high-speed data selection in real-time control and address decoding paths. |
| Output Drive Capability | ±8 mA at VCC = 4.5 V - sufficient to directly drive multiple 74-series inputs or small capacitive loads without buffering. |
| Operating Temperature | –40 °C to +125 °C - qualified per AEC-Q100 Rev. H for under-hood and dashboard-mounted automotive electronics. |
| Input Protection | 0 V to 5.5 V input tolerance independent of VCC - prevents damage during hot-insertion or supply sequencing mismatches. |
| Quiescent Current | 4.0 µA max at 25 °C - ensures ultra-low static power in always-on subsystems like wake-up logic or sensor interface muxing. |
Pinout & Package
TSSOP16B - 16-pin thin shrink small outline package (4.4 mm × 5.0 mm, 0.65 mm pitch), surface-mount compatible with standard reflow profiles and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (ST) | Strobe Enable Input | Active-high global disable: forces all Y outputs low when high, overriding SELECT and data inputs. |
| 2–5, 9–12 (A0–A3, B0–B3) | Data Inputs | Four pairs of complementary 2:1 input channels; each pair feeds one multiplexer stage. |
| 6 (SELECT) | Common Select Input | Single-bit control determining whether A or B inputs pass to corresponding Y outputs. |
| 7, 13–16 (Y0–Y3, GND, VCC) | Outputs & Power | Four buffered Y outputs plus dedicated VCC (pin 16) and GND (pin 8) - no shared power pins. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Complies with Rev. H stress test requirements for automotive-grade reliability and lifetime validation. |
| Wide VCC range (2.0–5.5 V) | Eliminates level shifters in mixed-voltage systems such as 3.3 V MCU interfacing with legacy 5 V peripherals. |
| Input overvoltage tolerance | Accepts 0–5.5 V inputs regardless of VCC - enables safe interfacing during brown-out or partial power-up conditions. |
| Balanced propagation delays | tPLH ≈ tPHL minimizes pulse-width distortion on critical timing paths like clock or enable distribution. |
| Low dynamic noise (VOLP ≤ 0.8 V) | Reduces crosstalk risk in dense PCB layouts with adjacent high-speed signals or analog sections. |
Applications
| Automotive Body Control Unit | Industrial PLC I/O Multiplexing |
|---|---|
|
Use Scenario: Routing sensor inputs (door latch, window position, mirror angle) to a central microcontroller ADC or GPIO bank. IC Role / Device Role / Timing Role: Signal selector enabling one MCU channel to monitor multiple discrete sensors sequentially via shared data lines. Use Value: Reduces MCU pin count and PCB trace count while maintaining deterministic sampling order and <10 ns timing skew across channels. |
Use Scenario: Consolidating status signals from 8 discrete field devices (limit switches, proximity sensors) onto 4 controller inputs. IC Role / Device Role / Timing Role: Digital signal aggregator with synchronized enable (ST) for scan-cycle-aligned readout. Use Value: Enables deterministic polling intervals and eliminates need for external OR-gating or additional controller GPIOs. |
| Consumer Audio Source Switching | Test Equipment Signal Routing |
|
Use Scenario: Selecting between digital audio streams (SPDIF, I²S, TDM) feeding a single DAC or codec interface. IC Role / Device Role / Timing Role: Glitch-free multiplexer with controlled enable timing to prevent pops/clicks during source transitions. Use Value: ST input allows mute-before-switch behavior; rail-to-rail input tolerance avoids external clamping diodes. |
Use Scenario: Configuring stimulus/response paths in automated test fixtures where DUT signal sources vary by test step. IC Role / Device Role / Timing Role: Reconfigurable signal path element controlled by test sequencer GPIOs. Use Value: 125 °C rating supports operation inside thermally constrained test enclosures; low ICC extends battery life in portable testers. |
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 |
|---|---|---|---|
| SN74LV157APWR | Lower VCC range (1.65–5.5 V); 5.5 ns tPD at 3.3 V; non-AEC-Q100; higher ICC (20 µA typ.) | Targeted at commercial/industrial systems only; not qualified for automotive temperature or reliability stress testing. | Select when cost sensitivity outweighs automotive qualification needs and 3.3 V operation dominates. |
| 74HC157D,653 | Same pinout but HC logic family; slower (19 ns tPD at 4.5 V); wider VCC (2–6 V); no input overvoltage tolerance | Limited to fixed 5 V systems; requires external clamping if interfacing with >5 V sources or hot-swap scenarios. | Choose only for legacy 5 V-only designs where timing slack permits and input voltage matching is guaranteed. |
Compared with SN74LV157APWR and 74HC157D,653, the 74VHC157FT uniquely combines AEC-Q100 compliance, 2.0–5.5 V operation, input overvoltage resilience, and sub-5 ns speed - making it the sole option for new automotive designs requiring robust mixed-voltage signal routing.
Availability
74VHC157FT is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, consumer audio switching, and automated test equipment requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for 74VHC157FT 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 and manufactures high-reliability semiconductor components, with core expertise in logic ICs, power devices, and storage solutions for automotive, industrial, and consumer markets.
The 74VHC157FT belongs to Toshiba's VHC (Very High Speed CMOS) logic family, engineered to deliver TTL-speed performance with CMOS power efficiency and enhanced ruggedness for demanding embedded control applications.
FAQ
What is the maximum operating temperature for the 74VHC157FT?
The 74VHC157FT is rated for continuous operation from –40 °C to +125 °C ambient temperature and is AEC-Q100 Rev. H qualified, confirming its suitability for under-hood automotive applications where thermal stress is severe. This rating is validated across all electrical parameters in the datasheet's DC and AC characteristics tables for Topr = –40 to 125 °C.
Does the 74VHC157FT support 3.3 V and 5 V logic level translation?
Yes, the 74VHC157FT supports bidirectional voltage-level translation: its inputs tolerate 0–5.5 V regardless of VCC (which can be set to 3.3 V or 5 V), and its outputs swing rail-to-rail. This allows safe interfacing between 3.3 V MCUs and 5 V sensors or legacy peripherals without external level shifters - a key feature confirmed in the Functional Description and Absolute Maximum Ratings sections.
What happens to the outputs when the ST input is high on the 74VHC157FT?
When the ST (strobe) input is held high, all four Y outputs are forced low independently of the SELECT state or A/B input values. This synchronous disable function is explicitly defined in the Truth Table and Functional Description, enabling clean bus isolation or muting during system reconfiguration - critical for glitch-free operation in real-time control systems using the 74VHC157FT.
Is the 74VHC157FT pin-compatible with older 74-series multiplexers?
Yes, the 74VHC157FT is pin- and function-compatible with industry-standard 74AC/HC/AHC/LV 157-type quad 2:1 multiplexers in TSSOP16B packaging, as stated in Feature #10. Its pin assignment matches JEDEC-standard 16-pin layout for 157 logic, allowing drop-in replacement in existing designs - provided voltage and timing margins accommodate VHC family characteristics like lower ICC and faster tPD.
What is the typical propagation delay of the 74VHC157FT at 5 V supply?
The 74VHC157FT exhibits a typical propagation delay of 4.1 ns (A/B → Y) at VCC = 5.0 V, CL = 50 pF, and Ta = 25 °C, as specified in Section 12.4 AC Characteristics. This value is measured under standardized load and edge-rate conditions (tr/tf = 3 ns) and represents best-case timing performance used for critical path analysis in high-speed digital design involving the 74VHC157FT.
74VHC157FT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- 74VHC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 8mA, 8mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOPB
74VHC157FT FAQ
1.How can I place an order for 74VHC157FT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC157FT 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 74VHC157FT reliable?
The price and inventory of 74VHC157FT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC157FT is usually 5 days.
3.What payment methods are accepted for 74VHC157FT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC157FT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC157FT?
74VHC157FT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC157FT 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 74VHC157FT?
For technical support, including 74VHC157FT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC157FT requirements.
6.How does Aetrix verify that 74VHC157FT is sourced from the original manufacturer or authorized distributors?
All 74VHC157FT 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 74VHC157FT meets industry standards.
7.What is the process for return or replacement of 74VHC157FT?
All 74VHC157FT units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC157FT, 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 74VHC157FT part is unused and in its original packaging.
Return procedure for 74VHC157FT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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