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Toshiba Semiconductor and Storage TC7W126FUTE12LF
- Part No.:
- TC7W126FUTE12LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 8-TSSOP, 8-MSOP (0.110", 2.80mm Width)
- Datasheet:
-
TC7W126FUTE12LF.pdf
- Description:
- IC BUFFER NON-INVERT 6V SM8
- Quantity:
- Payment:
- Shipping:
Inventory:4,838
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Product details
Overview
TC7W126FUTE12LF from Toshiba is a dual 3-state bus buffer IC fabricated in silicon gate C2MOS technology, operating from 2 V to 6 V with 10 ns typical propagation delay and 2 µA max quiescent current. It provides symmetrical ±6 mA output drive, high noise immunity (28% VCC), and supports LSTTL-compatible loading in industrial-grade temperature range (−40°C to +85°C).
For engineers reviewing the TC7W126FUTE12LF datasheet, TC7W126FUTE12LF pinout, TC7W126FUTE12LF application, or TC7W126FUTE12LF equivalent, key selection criteria include 3-state control logic, dual-channel independent enable, rail-to-rail input compatibility, and guaranteed high-impedance off-state leakage (±0.5 µA at 6 V).
Technical Context
The TC7W126FUTE12LF implements two independent non-inverting buffers, each with active-low 3-state enable (G1/G2). Its C2MOS architecture delivers LSTTL-speed performance while maintaining CMOS-level static power consumption. Input thresholds scale with VCC (VIH ≥ 3.15 V @ 4.5 V, VIL ≤ 1.35 V @ 4.5 V), enabling robust operation across the full 2–6 V supply range.
Each channel features matched propagation delays (tpLH ≈ tpHL), symmetrical output impedance (|IOH| = IOL ≥ 6 mA), and integrated ESD protection on all pins. The device meets industrial temperature requirements without derating and supports fast switching (tTLH/tTHL ≤ 10 ns @ 6 V, CL = 50 pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports single-supply operation across 3.3 V and 5 V logic domains without level shifters |
| Propagation Delay (tpLH/tpHL) | 10 ns (typ.) @ VCC = 5 V, CL = 50 pF - enables reliable timing in 50 MHz bus interfaces |
| Output Drive Strength | ±6 mA (min) - drives up to 15 LSTTL loads per channel with controlled edge rates |
| Quiescent Supply Current | 2 µA (max) @ Ta = 25°C - enables ultra-low-power standby in battery-backed systems |
| Noise Immunity | VNIH/VNIL ≥ 28% VCC - ensures stable logic recognition under noisy PCB conditions |
| 3-State Leakage (IOZ) | ±0.5 µA (max) @ VCC = 6 V - guarantees minimal bus contention during high-impedance state |
| Operating Temperature | −40°C to +85°C - qualified for industrial ambient environments without thermal derating |
Pinout & Package
TC7W126FUTE12LF is housed in an 8-pin US8 (Ultra Small Outline) package (2.8 mm × 2.45 mm, 0.65 mm pitch), compatible with reflow soldering and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G1) | Channel 1 Enable Input | Active-low control: drives Y1 high-impedance when logic high |
| 2 (A1) | Channel 1 Data Input | Non-inverting input referenced to VCC/GND; accepts 0–VCC swing |
| 3 (Y1) | Channel 1 Output | 3-state buffered output with ±6 mA drive and <10 ns transition time |
| 4 (GND) | Ground Reference | Primary return path for both channels; must be low-inductance connection |
| 5 (Y2) | Channel 2 Output | Independent 3-state output; electrically isolated from Y1 except via shared GND/VCC |
| 6 (A2) | Channel 2 Data Input | Non-inverting input identical in electrical behavior to A1 |
| 7 (VCC) | Positive Supply | Single power rail for both channels; bypass capacitor required at pin |
| 8 (G2) | Channel 2 Enable Input | Active-low control independent of G1; allows asynchronous channel gating |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state buffers | Enables bidirectional bus arbitration with separate G1/G2 controls - no inter-channel timing dependency |
| Rail-to-rail input voltage tolerance | Accepts VIN = 0 V to VCC without damage or latch-up - simplifies interface with mixed-voltage peripherals |
| Matched propagation delays | tpLH ≈ tpHL minimizes duty-cycle distortion in clock distribution or data strobe paths |
| Integrated input ESD protection | Withstands ±20 mA diode current - eliminates need for external TVS on board-level I/O lines |
| Low dynamic power capacitance | CPD = 41 pF - reduces switching current (ICC(opr) = CPD·VCC·fIN + ICC/2), critical for high-frequency buses |
Applications
| Industrial PLC Backplane Interface | Legacy ISA Bus Signal Conditioning |
|---|---|
Use Scenario: Isolating and driving address/data lines between microcontroller and legacy expansion slots in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-channel bus buffer with independent enables synchronizes read/write handshaking while preventing bus contention. Use Value: 10 ns propagation delay ensures setup/hold compliance with ISA's 8 MHz timing; 2–6 V operation supports both 3.3 V MCU and 5 V peripheral rails. | Use Scenario: Level-shifting and fanout buffering for 8-bit ISA bus signals in retro-computing hardware restoration projects. IC Role / Device Role / Timing Role: Non-inverting 3-state repeater that restores signal integrity across long backplane traces. Use Value: ±6 mA drive capability sustains 15 LSTTL loads; high noise immunity prevents false triggering in electrically noisy vintage chassis environments. |
| Automotive Body Control Module I/O Expansion | Test Equipment Digital Pattern Generator |
Use Scenario: Expanding GPIO count for door lock, window lift, and lighting control in body electronics ECUs. IC Role / Device Role / Timing Role: Low-quiescent-current buffer isolates MCU pins from higher-capacitance harness wiring. Use Value: 2 µA max ICC enables always-on monitoring without battery drain; −40°C to +85°C rating matches automotive under-hood requirements. | Use Scenario: Generating synchronized digital stimulus waveforms for DUT testing in automated test equipment. IC Role / Device Role / Timing Role: Precision timing buffer ensuring deterministic edge alignment across multiple parallel data lines. Use Value: Matched tpLH/tpHL (<2 ns skew) maintains phase coherence in multi-bit pattern generation; 50 pF load drive verified per AC specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC2G126DP,125 | Lower VCC range (1.65–5.5 V); faster tpd = 3.7 ns @ 3.3 V; IOZ = ±10 µA (max) | Better suited for 1.8 V/3.3 V-only systems; higher off-state leakage may affect high-impedance bus hold | Select when speed > 10 ns and supply is strictly ≤5.5 V; verify bus leakage tolerance in high-Z periods |
| SN74LV244APWR | Octal (not dual); wider VCC (2–5.5 V); tpd = 6.5 ns @ 5 V; ICC = 20 µA (max) | Higher channel count but larger TSSOP-20 package; higher static current impacts low-power designs | Choose only when eight buffers are needed; avoid if space or quiescent current are constrained |
Compared with TC7W126FUTE12LF, the 74LVC2G126DP offers superior speed at lower voltages but looser off-state control, while SN74LV244APWR trades channel count and package size for marginal speed gain and higher ICC - making TC7W126FUTE12LF optimal for compact, low-leakage dual-buffer needs.
Availability
TC7W126FUTE12LF is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, automotive body control modules, and test equipment digital pattern generators requiring stable component supply and long-term lifecycle support.
Supply support for TC7W126FUTE12LF 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, logic ICs, and power devices for industrial, automotive, and consumer applications.
The TC7W series targets high-speed, low-power CMOS logic interfacing - specifically engineered for bus buffering, level translation, and signal conditioning in space- and power-sensitive embedded systems.
FAQ
What is the maximum recommended operating voltage for TC7W126FUTE12LF?
The absolute maximum supply voltage for TC7W126FUTE12LF is 7 V, but the specified operational range is 2 V to 6 V. Operation above 6 V voids guaranteed performance and may cause irreversible damage. All DC and AC parameters in the datasheet - including VOH, VOL, and tpd - are validated only within the 2–6 V range, and Toshiba explicitly defines VCC(opr) = 2 to 6 V in the Operating Ranges table. Therefore, 6 V is the maximum recommended operating voltage for reliable, specification-compliant use of TC7W126FUTE12LF.
Does TC7W126FUTE12LF support mixed-voltage interfacing between 3.3 V and 5 V systems?
Yes, TC7W126FUTE12LF supports mixed-voltage interfacing because its inputs accept 0 V to VCC logic levels, and it operates over 2–6 V. When powered at 5 V, it reliably recognizes 3.3 V logic-high inputs (VIH min = 3.15 V at VCC = 4.5 V), and when powered at 3.3 V, its outputs swing rail-to-rail to drive 3.3 V receivers. However, it does not translate voltage levels - output high is VCC, so a 3.3 V-powered TC7W126FUTE12LF cannot directly drive a 5 V input without additional level-shifting circuitry.
What is the purpose of the "X" (don't care) entry in the truth table for TC7W126FUTE12LF?
The "X" in the TC7W126FUTE12LF truth table indicates that the logic state of the data input (A1 or A2) has no effect on the output when the corresponding enable (G1 or G2) is high - the output remains in high-impedance regardless of A. This reflects the fundamental 3-state behavior: enable control dominates over data input. For example, when G1 = H, Y1 = Z even if A1 = H or A1 = L. This design allows independent bus release without coordinating data states, simplifying arbitration logic in shared-bus architectures using TC7W126FUTE12LF.
How does the 2 µA maximum ICC specification for TC7W126FUTE12LF impact battery-powered designs?
The 2 µA maximum quiescent supply current (ICC) for TC7W126FUTE12LF enables ultra-low-power operation in battery-critical applications such as remote sensors or backup controllers. At 3.3 V, this draws just 6.6 µW statically - less than many microcontroller GPIO leakage currents. Combined with independent channel enables, unused sections can be gated off completely, reducing total system ICC. This makes TC7W126FUTE12LF especially valuable in always-on monitoring circuits where minimizing standby drain over years is essential, unlike alternatives with ICC > 10 µA.
Can TC7W126FUTE12LF replace older 74LS126 devices in legacy designs?
TC7W126FUTE12LF can functionally replace 74LS126 in most legacy designs due to matching pinout (SOIC-8 vs US8 pin mapping aligns 1:1 for G, A, Y, GND, VCC), identical 3-state logic, and LSTTL-compatible speed (10 ns vs LS126's ~15 ns). It also offers lower power (2 µA vs LS126's ~15 mA ICC) and wider voltage range. However, verify layout compatibility: US8 is smaller (2.8 × 2.45 mm) than SOIC-8 (4.9 × 3.9 mm), requiring footprint adaptation. No electrical redesign is needed for TC7W126FUTE12LF drop-in use where space permits.
TC7W126FUTE12LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TC7W
- Package/Case:
- 8-TSSOP, 8-MSOP (0.110", 2.80mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SSOP
TC7W126FUTE12LF FAQ
1.How can I place an order for TC7W126FUTE12LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TC7W126FUTE12LF 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 TC7W126FUTE12LF reliable?
The price and inventory of TC7W126FUTE12LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC7W126FUTE12LF is usually 5 days.
3.What payment methods are accepted for TC7W126FUTE12LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC7W126FUTE12LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC7W126FUTE12LF?
TC7W126FUTE12LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC7W126FUTE12LF 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 TC7W126FUTE12LF?
For technical support, including TC7W126FUTE12LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC7W126FUTE12LF requirements.
6.How does Aetrix verify that TC7W126FUTE12LF is sourced from the original manufacturer or authorized distributors?
All TC7W126FUTE12LF 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 TC7W126FUTE12LF meets industry standards.
7.What is the process for return or replacement of TC7W126FUTE12LF?
All TC7W126FUTE12LF units undergo pre-shipment inspection (PSI). If there is an issue with TC7W126FUTE12LF, 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 TC7W126FUTE12LF part is unused and in its original packaging.
Return procedure for TC7W126FUTE12LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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