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onsemi MC74VHC1G135DFT1
- Part No.:
- MC74VHC1G135DFT1
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MC74VHC1G135DFT1.pdf
- Description:
- IC GATE NAND 1CH 2-INP SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:1,407
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Product details
Overview
MC74VHC1G135DFT1 from onsemi is a single 2-input Schmitt-trigger NAND gate with open-drain output, designed for level-shifting and noise-immune signal conditioning in mixed-voltage systems. It operates from 2.0 V to 5.5 V, delivers 4.9 ns propagation delay at 5 V (typ), supports 8 mA sink current at 3.0 V, and features overvoltage-tolerant inputs/outputs up to 5.5 V-enabling reliable interfacing between 3 V and 5 V logic domains in industrial control I/O modules.
For engineers reviewing the MC74VHC1G135DFT1 datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, SC-74A package mapping, confirmed Schmitt-trigger hysteresis (0.3–2.25 V), open-drain interface behavior, and validated alternatives for voltage-level translation and noise-suppressed digital input conditioning.
Technical Context
The MC74VHC1G135DFT1 implements a three-stage CMOS architecture with buffered output and Schmitt-trigger input hysteresis, delivering stable switching thresholds (VT+ = 2.2–3.85 V, VT− = 0.9–1.65 V) across 2.0–5.5 V supply range. Its open-drain output enables wired-AND configurations and I²C-compatible bus driving without external pull-ups in active-low logic networks.
Input structures tolerate up to 5.5 V regardless of VCC, supporting hot-insertion and battery-backup scenarios; IOFF functionality ensures partial power-down protection when VCC = 0 V, and output structures remain safe even when VOUT exceeds VCC-critical for fault-tolerant sensor interface designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 5.5 V - Enables direct operation across 3.3 V and 5 V logic rails without level shifters. |
| tPD (typ) | 4.9 ns at 5 V - Supports high-speed signal conditioning in real-time industrial feedback loops. |
| VT+ / VT− | 2.2 V / 0.9 V (min at 3.0 V) - Provides 1.3 V hysteresis margin for robust noise rejection in noisy factory environments. |
| IOL (max) | 8 mA at 3.0 V - Sinks sufficient current to drive LED indicators or low-power optocouplers directly. |
| Input Tolerance | Up to 5.5 V independent of VCC - Allows safe connection to 5 V sensors while powered from 3.3 V microcontroller rails. |
| IOFF Leakage | ≤10 µA at VCC = 0 V - Prevents backfeeding and maintains isolation during system power sequencing. |
Pinout & Package
MC74VHC1G135DFT1 is housed in the SC-74A (SOT-23-5) surface-mount package (3.00 × 1.50 × 0.95 mm), optimized for space-constrained PCB layouts in portable instrumentation and modular PLC I/O cards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B) | Input | Second NAND input; Schmitt-triggered for noise immunity and clean edge detection. |
| 2 (A) | Input | Primary NAND input; overvoltage-tolerant up to 5.5 V regardless of VCC setting. |
| 3 (GND) | Ground Reference | Return path for internal logic and output sink current; must be low-impedance for stable hysteresis. |
| 4 (Y) | Open-Drain Output | Active-low output requiring external pull-up; supports wired-AND, I²C, and interrupt bus sharing. |
| 5 (VCC) | Supply Voltage | Power rail for internal logic; IOFF protection engages when VCC = 0 V to block leakage paths. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger input hysteresis | 0.3–2.25 V range (VCC-dependent) - Eliminates chatter on slow-rising sensor signals like mechanical switch bounce or thermistor outputs. |
| Open-drain output architecture | Enables bidirectional bus communication and multi-source interrupt lines without contention, reducing component count in shared-signal architectures. |
| Overvoltage-tolerant I/O | Inputs and outputs withstand 5.5 V regardless of VCC - permits direct connection to legacy 5 V peripherals without external clamping diodes. |
| IOFF partial power-down | Sub-10 µA leakage when VCC = 0 V - preserves signal integrity and prevents backpowering during hot-swap or firmware update sequences. |
Applications
| Industrial Sensor Interface | Microcontroller GPIO Expansion |
|---|---|
Use Scenario: Conditioning signals from 5 V proximity switches feeding a 3.3 V ARM Cortex-M4-based PLC controller. IC Role / Device Role / Timing Role: Level-translating Schmitt NAND gate providing noise-immune digital input with open-drain output for shared interrupt line. Use Value: Eliminates external resistive dividers and RC filters while maintaining >1.3 V hysteresis margin against EMI in motor-drive adjacent zones. | Use Scenario: Adding debounced pushbutton inputs to an embedded medical device with limited GPIO resources. IC Role / Device Role / Timing Role: Single-gate Schmitt NAND used as active-low input conditioner with open-drain output tied to MCU's external interrupt pin. Use Value: Reduces BOM count by replacing discrete RC + buffer solutions; IOFF prevents backfeed during MCU sleep mode. |
| I²C Bus Signal Conditioning | Legacy System Voltage Translation |
Use Scenario: Driving I²C SDA line from a 5 V microcontroller to a 3.3 V sensor node in a smart building HVAC controller. IC Role / Device Role / Timing Role: Open-drain NAND gate configured as level translator with Schmitt input for robust clock-domain crossing. Use Value: Meets I²C timing requirements (tPLZ/tPZL ≤10.3 ns at 5 V) while rejecting transients induced by nearby AC wiring. | Use Scenario: Interfacing 5 V RS-232 line receivers to a 3.3 V FPGA configuration manager in telecom baseband boards. IC Role / Device Role / Timing Role: Voltage-agnostic NAND gate acting as enable-controlled signal pass-through with hysteresis for clean state transitions. Use Value: Avoids dedicated level translators; overvoltage tolerance eliminates need for input clamping diodes or series resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt-trigger NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G135DBVR | Same SC-70-5 package, 1.65–5.5 V VCC range; lower hysteresis (0.2–1.4 V) and slower tPD (7.5 ns @ 3.3 V). | Limited noise margin in high-EMI settings; unsuitable for 2.0 V operation or sub-5 ns timing-critical paths. | Select when cost sensitivity outweighs hysteresis margin and 2.0 V compatibility is unnecessary. |
| NC7SZ135P5X | SC-70-5 package, 1.65–5.5 V VCC; higher IOL (24 mA @ 3.3 V) but no IOFF support and narrower VT+ (1.9–3.1 V). | Lacks partial power-down protection; not recommended for hot-plug or multi-rail sequencing systems. | Prefer where high sink current is prioritized over power-state isolation and wide supply flexibility. |
Compared with SN74LVC1G135DBVR and NC7SZ135P5X, the MC74VHC1G135DFT1 offers broader VCC range (2.0–5.5 V), superior hysteresis (up to 2.25 V), and guaranteed IOFF behavior-making it uniquely suited for ruggedized industrial interfaces requiring both voltage flexibility and fail-safe power sequencing.
Availability
MC74VHC1G135DFT1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller GPIO expansion, I²C bus conditioning, and legacy system voltage translation requiring stable component supply across extended temperature ranges (−55 °C to +125 °C).
Supply support for MC74VHC1G135DFT1 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
onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC74VHC1G135DFT1 belongs to onsemi's VHC logic family-designed specifically for high-speed, low-power, mixed-voltage digital interfacing in harsh-environment embedded systems.
FAQ
What is the maximum input voltage tolerance for MC74VHC1G135DFT1?
The MC74VHC1G135DFT1 supports DC input voltages up to 5.5 V regardless of VCC level, enabling safe interfacing with 5 V sources while operating from a 3.3 V or 2.5 V supply. This overvoltage tolerance is implemented via robust input protection structures and is specified across the full −55 °C to +125 °C operating range per the onsemi datasheet.
Does MC74VHC1G135DFT1 support partial power-down operation?
Yes, MC74VHC1G135DFT1 includes IOFF circuitry that limits input/output leakage to ≤10 µA when VCC = 0 V. This feature prevents back-driving of powered rails and maintains signal isolation during hot-swap events or multi-rail power sequencing-critical in modular industrial controllers where subsystems power up/down independently.
What is the typical propagation delay of MC74VHC1G135DFT1 at 3.3 V?
At VCC = 3.3 V and CL = 15 pF, the MC74VHC1G135DFT1 exhibits a typical propagation delay (tPZL/tPLZ) of 7.6 ns, with a maximum of 16.1 ns over the full −55 °C to +125 °C temperature range. These values are measured under standard AC test conditions defined in the onsemi datasheet Figure 3 and Table 5.
Can MC74VHC1G135DFT1 drive an LED directly?
Yes, MC74VHC1G135DFT1 can sink up to 8 mA at 3.0 V (VOL ≤ 0.52 V), sufficient to drive low-current indicator LEDs with appropriate series resistance. Its open-drain output requires an external pull-up; for higher-current LEDs (>8 mA), a discrete transistor buffer is recommended to avoid exceeding absolute maximum ratings.
Is MC74VHC1G135DFT1 RoHS compliant and lead-free?
Yes, MC74VHC1G135DFT1 is Pb-free, halogen-free/BFR-free, and fully RoHS compliant per the onsemi datasheet revision 21. The "G" suffix in ordering codes (e.g., MC74VHC1G135DBVT1G) explicitly denotes RoHS-compliant packaging, and the SC-74A package meets JEDEC moisture sensitivity level 1 requirements.
MC74VHC1G135DFT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NAND Gate
- Number of Circuits:
- 1
- Number of Inputs:
- 2
- Features:
- Schmitt Trigger, Open Drain
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- -, 8mA
- Input Logic Level - Low:
- 0.65V ~ 1.45V
- Input Logic Level - High:
- 2.25V ~ 3.7V
- Max Propagation Delay @ V, Max CL:
- 9.7ns @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
MC74VHC1G135DFT1 FAQ
1.How can I place an order for MC74VHC1G135DFT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74VHC1G135DFT1 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 MC74VHC1G135DFT1 reliable?
The price and inventory of MC74VHC1G135DFT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC1G135DFT1 is usually 5 days.
3.What payment methods are accepted for MC74VHC1G135DFT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC1G135DFT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74VHC1G135DFT1?
MC74VHC1G135DFT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74VHC1G135DFT1 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 MC74VHC1G135DFT1?
For technical support, including MC74VHC1G135DFT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC1G135DFT1 requirements.
6.How does Aetrix verify that MC74VHC1G135DFT1 is sourced from the original manufacturer or authorized distributors?
All MC74VHC1G135DFT1 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 MC74VHC1G135DFT1 meets industry standards.
7.What is the process for return or replacement of MC74VHC1G135DFT1?
All MC74VHC1G135DFT1 units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC1G135DFT1, 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 MC74VHC1G135DFT1 part is unused and in its original packaging.
Return procedure for MC74VHC1G135DFT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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