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Toshiba Semiconductor and Storage TC7MBL3125CFK(EL)
- Part No.:
- TC7MBL3125CFK(EL)
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 14-VFSOP (0.118", 3.00mm Width)
- Datasheet:
-
TC7MBL3125CFK(EL).pdf
- Description:
- IC BUS SWITCH 4 X 1:1 14VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,366
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Product details
Overview
TC7MBL3125CFK from Toshiba Electronic Devices & Storage Corporation is a low-voltage, low-capacitance 4-bit CMOS bus switch with 6.5 Ω typical on-resistance at 3.0 V, 7.5 pF typical ON-capacitance, and 1.65–3.6 V operating supply range. It functions as an active-high output-enable bidirectional signal path selector in high-speed digital interfaces such as memory expansion, FPGA I/O bridging, and level-shifting data buses.
For engineers reviewing the TC7MBL3125CFK datasheet, TC7MBL3125CFK pinout, TC7MBL3125CFK application, or TC7MBL3125CFK equivalent, key selection criteria include active-high OE logic, VSSOP14 package compatibility, sub-10 ns enable/disable timing, low RON/CI/O product for minimal signal degradation, and power-down input protection for hot-swap scenarios.
Technical Context
The TC7MBL3125CFK implements four independent analog/digital bidirectional switches controlled by a single active-high output enable (OE) input. Each switch exhibits symmetrical conduction between A and B terminals with no internal directionality or voltage translation.
Its design supports rail-to-rail signal pass-through across 1.65–3.6 V logic domains, with guaranteed operation over –40°C to +85°C ambient. Input leakage remains ≤±1.0 µA across supply range, and power-off protection prevents back-driving of powered downstream circuits when VCC is unpowered.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65–3.6 V - Enables interoperability with 1.8 V, 2.5 V, and 3.3 V logic families without level shifters. |
| ON Resistance | 6.5 Ω (typ.) @ 3.0 V - Ensures <100 ps added propagation delay in 50 Ω systems with ≤15 pF load. |
| ON Capacitance | 7.5 pF (typ.) @ 3.0 V - Limits bandwidth degradation and maintains signal integrity up to ~2 GHz in matched traces. |
| Enable Timing | tPZL/tPZH ≤ 11 ns (max) @ 1.8 V - Supports >90 MHz toggle rates in burst-mode data routing. |
| Input Leakage | ±1.0 µA (max) @ –40°C to +85°C - Prevents unintended biasing in high-impedance sensor or reference paths. |
| ESD Protection | HBM ±2000 V - Satisfies IEC 61000-4-2 Level 2 for board-level handling without external protection diodes. |
Pinout & Package
VSSOP14 (US14) package: 3.0 mm × 4.4 mm body, 0.5 mm pitch, 0.65 mm max height, 0.02 g typical weight. Exposed pad not present; moisture sensitivity level (MSL) = 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 9, 11, 13 | A-side I/O (A1–A4, OE, GND, VCC) | Even-numbered pins are B-side; odd pins carry A-port signals, OE control, power, and ground - requires strict 1:1 A/B trace pairing. |
| 2, 4, 6, 8, 10, 12, 14 | B-side I/O (B1–B4, NC, GND, VCC) | B1–B4 mirror A1–A4; pins 10 and 12 are dedicated GND/VCC - decoupling capacitor must be placed within 2 mm of pin 12. |
| 1 (OE) | Output Enable (active-high) | Drives all four switches simultaneously; OE = low forces all outputs to high-impedance - no partial enable capability. |
| 13 (VCC), 12 (GND) | Power supply terminals | Single VCC/GND pair powers entire device; no separate I/O supply - prohibits mixed-voltage domain isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Low RON × CI/O product | 48.75 Ω·pF (6.5 Ω × 7.5 pF) - minimizes RC-induced rise/fall time degradation in high-speed parallel buses. |
| Active-high OE polarity | Differentiates TC7MBL3125CFK from TC7MBL3126CFK - simplifies interface with microcontrollers lacking active-low GPIO drivers. |
| Power-down input protection | Prevents current flow into A/B/OE pins when VCC = 0 V - enables safe hot-plug operation in modular backplane systems. |
| Rail-to-rail analog switching | Supports DC-coupled signals from 0 V to VCC - allows use in both digital data routing and analog sensor multiplexing applications. |
Applications
| Memory Expansion Interface | FPGA I/O Bridging |
|---|---|
Use Scenario: Expanding SRAM/Flash address/data bus width between SoC and peripheral memory using shared control lines. IC Role / Device Role / Timing Role: Bidirectional bus switch enabling dynamic connection/disconnection of memory banks without bus contention. Use Value: 6.5 Ω RON ensures <100 mV voltage drop at 15 mA drive, preserving TTL/LVTTL logic margins during burst transfers. |
Use Scenario: Isolating FPGA configuration I/O from system management controller during reconfiguration cycles. IC Role / Device Role / Timing Role: Signal path gate controlled by FPGA DONE signal to prevent configuration corruption during power sequencing. Use Value: Sub-11 ns disable time guarantees clean break-before-make transition, eliminating metastability in JTAG/SPI configuration chains. |
| LVDS Signal Multiplexing | USB 2.0 Data Line Switching |
Use Scenario: Selecting between two LVDS video sources feeding a single display controller with common differential clock. IC Role / Device Role / Timing Role: Low-capacitance analog switch preserving differential impedance matching and common-mode rejection. Use Value: 7.5 pF CI/O limits insertion loss to <0.3 dB at 300 MHz, maintaining eye diagram integrity per ANSI/TIA/EIA-644-A. |
Use Scenario: Sharing USB 2.0 D+/D− lines between host controller and dual-device ports via software-selectable routing. IC Role / Device Role / Timing Role: Bidirectional 4-bit switch handling full-speed (12 Mbps) and high-speed (480 Mbps) data pairs with matched trace lengths. Use Value: Symmetrical RON (<±0.5 Ω mismatch) prevents D+/D− skew beyond 100 ps, satisfying USB 2.0 eye mask requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3125PW | Higher RON (7 Ω typ. @ 3.3 V), wider VCC range (4.5–5.5 V), no power-down protection | Requires external clamping for hot-swap; unsuitable for 1.8 V systems without level shifting | Select when interfacing legacy 5 V logic and board space permits larger TSSOP-14 package. |
| NC7SZ3125P5X | Smaller SC-70-5 package, single-channel only, 10 Ω RON, no OE control (always-on) | Lacks enable control and multi-bit integration - requires four discrete units for equivalent function | Choose for ultra-compact PCB area where channel independence and minimal footprint outweigh control flexibility. |
Compared with SN74CBT3125PW and NC7SZ3125P5X, the TC7MBL3125CFK uniquely combines 1.65 V operation, active-high OE, integrated 4-channel architecture, and power-down protection - making it optimal for space-constrained, multi-voltage embedded systems requiring robust hot-swap capability.
Availability
TC7MBL3125CFK is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA I/O bridging, LVDS signal multiplexing, and USB 2.0 data line switching requiring stable component supply across industrial temperature ranges and long-term production continuity.
Supply support for TC7MBL3125CFK 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 for industrial, automotive, and consumer applications, with emphasis on low-power logic and analog interface solutions.
The TC7MBL3125CFK belongs to Toshiba's low-voltage bus switch family, engineered specifically for minimizing signal distortion in high-speed digital interconnects while supporting mixed-voltage system architectures.
FAQ
What is the logic polarity of the output enable (OE) input on the TC7MBL3125CFK?
The TC7MBL3125CFK features an active-high output enable (OE) input: when OE is high, the A–B switch paths conduct; when OE is low, all four channels enter high-impedance state. This distinguishes it from the pin-compatible TC7MBL3126CFK, which uses active-low OE logic. The TC7MBL3125CFK datasheet specifies OE threshold as VIH ≥ 0.7×VCC and VIL ≤ 0.3×VCC across the full 1.65–3.6 V supply range.
Does the TC7MBL3125CFK support true analog signal switching, or is it limited to digital logic levels?
The TC7MBL3125CFK supports true analog signal switching: its MOSFET-based transmission gates pass DC-coupled signals from 0 V to VCC without level shifting or distortion, verified by RON flatness across VIS = 0–3.0 V and CI/O stability under varying bias conditions. The TC7MBL3125CFK has been validated in sensor multiplexing and audio routing applications where rail-to-rail analog fidelity is required.
Can the TC7MBL3125CFK be used in hot-swap or live-insertion applications?
Yes - the TC7MBL3125CFK includes power-down protection circuitry that blocks current flow into A, B, and OE pins when VCC = 0 V, preventing back-powering of upstream circuits during card insertion/removal. This feature is explicitly documented in Toshiba's datasheet Section 3(4) and confirmed by IOFF leakage ≤±1.0 µA at VCC = 0 V, making the TC7MBL3125CFK suitable for modular backplane and docking station designs.
What is the maximum data rate supported by the TC7MBL3125CFK in a 50 Ω transmission line environment?
Based on its 6.5 Ω RON and 7.5 pF CI/O, the TC7MBL3125CFK maintains signal integrity up to ~2 GHz in properly terminated 50 Ω systems, as calculated from the RC time constant (τ ≈ RON × CI/O ≈ 49 fs). Measured tPLZ/tPHZ ≤ 11 ns at 1.8 V confirms reliable operation at >90 MHz toggle rates, supporting USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) data routing without equalization.
Is the TC7MBL3125CFK RoHS compliant and lead-free?
Yes - the TC7MBL3125CFK is manufactured in accordance with EU RoHS Directive 2011/65/EU and is lead-free, halogen-free, and compliant with Toshiba's environmental specifications. The "CFK" suffix denotes lead-free plating and green molding compound; full compliance documentation is available in Toshiba's official product change notices and material declarations for TC7MBL3125CFK.
TC7MBL3125CFK(EL) Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TC7MB
- Package/Case:
- 14-VFSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 4 x 1:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-VSSOP
TC7MBL3125CFK(EL) FAQ
1.How can I place an order for TC7MBL3125CFK(EL) through Aetrix?
Please submit a Request for Quotation (RFQ) for TC7MBL3125CFK(EL) 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 TC7MBL3125CFK(EL) reliable?
The price and inventory of TC7MBL3125CFK(EL) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC7MBL3125CFK(EL) is usually 5 days.
3.What payment methods are accepted for TC7MBL3125CFK(EL)?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC7MBL3125CFK(EL) transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC7MBL3125CFK(EL)?
TC7MBL3125CFK(EL) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC7MBL3125CFK(EL) 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 TC7MBL3125CFK(EL)?
For technical support, including TC7MBL3125CFK(EL) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC7MBL3125CFK(EL) requirements.
6.How does Aetrix verify that TC7MBL3125CFK(EL) is sourced from the original manufacturer or authorized distributors?
All TC7MBL3125CFK(EL) 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 TC7MBL3125CFK(EL) meets industry standards.
7.What is the process for return or replacement of TC7MBL3125CFK(EL)?
All TC7MBL3125CFK(EL) units undergo pre-shipment inspection (PSI). If there is an issue with TC7MBL3125CFK(EL), 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 TC7MBL3125CFK(EL) part is unused and in its original packaging.
Return procedure for TC7MBL3125CFK(EL):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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