Toshiba Semiconductor and Storage TC7SB3157DL6X,(S2E

Overview

TC7SB3157DL6X from Toshiba Electronic Devices & Storage Corporation is a high-speed CMOS single 1-of-2 multiplexer/demultiplexer with 4 Ω typical ON-resistance at 4.5 V, 15 pF ON-capacitance at 5.0 V, and operation across 1.65–5.5 V supply. It routes analog or digital signals between one input (A) and two outputs (B1/B2) under select (S) control, used in signal path switching for portable audio interfaces and USB data line routing.

For engineers reviewing the TC7SB3157DL6X datasheet, TC7SB3157DL6X pinout, TC7SB3157DL6X application, or TC7SB3157DL6X equivalent, key selection criteria include its rail-to-rail switch voltage range (0 to VCC), low propagation delay enabled by minimal RON×CI/O product, ESD-protected inputs, and MP6D package compatibility with space-constrained PCB layouts.

Technical Context

The TC7SB3157DL6X implements a single-pole double-throw (SPDT) analog switch architecture with complementary MOSFET pairs per channel. Its truth table defines deterministic A→B1 routing when S = L and A→B2 when S = H, with no internal latching or clocking logic.

It operates as a bidirectional switch: signal flow direction is independent of terminal designation (A, B1, B2), and all I/O pins tolerate voltages from –0.5 V to VCC. Input leakage remains ≤±1.0 µA over –40°C to +85°C, and quiescent supply current is ≤10 µA at VCC = 5.5 V.

Key Specifications

Pinout & Package

TC7SB3157DL6X uses the MP6D (Mini Package 6-pin Dual) surface-mount package: 1.6 mm × 1.6 mm footprint, 0.5 mm pitch, 0.55 mm max height, 0.002 g weight. Pin 1 marked with dot; lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with SN74LVC1G3157DBVR and NX3L1T3157GM, the TC7SB3157DL6X offers balanced performance at 4 Ω RON and proven reliability in industrial temperature range, making it optimal for cost-sensitive, space-constrained applications requiring guaranteed 1.65 V startup and robust ESD tolerance without voltage scaling trade-offs.

Availability

TC7SB3157DL6X is available at Aetrix Electronics and suitable for USB interface switching, portable audio routing, industrial sensor multiplexing, and low-power MCU GPIO expansion requiring stable component supply and long-term manufacturability.

Supply support for TC7SB3157DL6X 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 discrete semiconductors, power devices, and logic ICs with emphasis on efficiency, miniaturization, and industrial reliability.

The TC7SB3157DL6X belongs to Toshiba's TC7SB ultra-low-power logic switch family, engineered for signal routing in battery-powered and space-constrained consumer and industrial electronics.

FAQ

What is the maximum signal frequency supported by TC7SB3157DL6X?

The TC7SB3157DL6X does not specify a hard bandwidth limit but supports signals up to ~100 MHz in practice. Its 15 pF ON-capacitance and 4 Ω ON-resistance yield an R-C time constant of ~60 ps, supporting rise/fall times under 2.6 ns with typical load conditions. For USB 2.0 (480 Mbps), signal integrity is maintained due to controlled impedance routing and low parasitic coupling.

Can TC7SB3157DL6X switch analog signals exceeding the supply voltage?

No. The TC7SB3157DL6X switch I/O voltage range is strictly 0 V to VCC per absolute maximum ratings. Applying signals outside this range - even briefly - risks latch-up or permanent damage. For signals exceeding VCC, external clamping or level-shifting circuitry is required before connection to TC7SB3157DL6X pins.

Is TC7SB3157DL6X compatible with 1.2 V logic systems?

No. TC7SB3157DL6X has a minimum operating supply voltage of 1.65 V. At 1.2 V, VIH and VIL thresholds cannot be met reliably, and RON increases significantly, degrading switching performance. For 1.2 V systems, consider alternatives like NX3L1T3157GM which specifies operation down to 1.2 V.

How should unused pins be handled on TC7SB3157DL6X?

The S input must never float: tie to VCC or GND using a pull-up or pull-down resistor (e.g., 10 kΩ). Unused B1 or B2 terminals may be left unconnected but must not be driven by active sources. A pin left open-circuit poses no risk, but grounding unused outputs improves EMI immunity in noisy environments.

Does TC7SB3157DL6X require external power supply decoupling?

Yes. A 0.1 µF ceramic capacitor must be placed as close as possible to the VCC and GND pins of TC7SB3157DL6X to suppress high-frequency noise and stabilize internal switch biasing. Without proper decoupling, transient current spikes during switching can cause supply droop and erratic behavior, especially at frequencies above 10 MHz.