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STMicroelectronics 74VHC02TTR
- Part No.:
- 74VHC02TTR
- Manufacturer:
- STMicroelectronics
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74VHC02TTR.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,194
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Product details
Overview
74VHC02TTR from STMicroelectronics is a quad 2-input NOR gate IC in TSSOP-14 package, operating from 2V to 5.5V supply, with typical propagation delay of 3.6ns at 5V, symmetrical output drive (±8mA), and input tolerance up to 7V independent of VCC. It enables level-shifting between 3V and 5V logic domains in digital control subsystems.
For engineers reviewing the 74VHC02TTR datasheet, 74VHC02TTR pinout, 74VHC02TTR application, or 74VHC02TTR equivalent, key selection criteria include guaranteed 2V–5.5V operation, ±2kV ESD immunity, power-down protected inputs, low quiescent current (2µA max), and compatibility with legacy 74-series logic timing and footprint.
Technical Context
The device implements four independent NOR gates using sub-micron C2MOS technology with three-stage buffered outputs, delivering high noise immunity (VNIH/VNIL ≥28% VCC) and balanced tPLH/tPHL delays. Input protection allows 0–7V signal acceptance regardless of VCC, enabling robust interfacing across mixed-voltage systems.
All inputs feature diode clamping and latch-up immunity enhancement; outputs provide symmetrical sourcing/sinking capability (IOH/IOL ≥8mA) and low dynamic noise (VOLP ≤0.8V at 5V/50pF). The design supports hot-swap tolerant operation without external pull-ups or clamps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2V to 5.5V - supports dual-supply 3.3V and 5V system integration without level translators |
| tPD (Typ) | 3.6ns at VCC=5V, CL=15pF - enables >100MHz toggle rates in combinatorial logic paths |
| IOH / IOL | ≥8mA - drives standard TTL loads and multiple CMOS inputs directly |
| VIH / VIL | 0.7VCC / 0.3VCC - ensures reliable switching across full VCC range with margin |
| ICC (Max) | 2µA at TA=25°C - minimizes standby power in battery-backed or always-on logic |
| ESD Rating | ±2kV HBM - eliminates need for external ESD protection on board-level I/O traces |
| Input Voltage Range | −0.5V to +7.0V - permits safe connection to unpowered or overvoltage sources |
Pinout & Package
TSSOP-14 package: 4.4mm × 5.0mm body, 0.65mm pitch, 1.05mm max height, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1Y, 2Y, 3Y, 4Y | Active-low NOR outputs - each drives one logic stage with rail-to-rail swing |
| 2, 5, 8, 11 | 1A, 2A, 3A, 4A | First input per gate - accepts 0–7V signals regardless of VCC state |
| 3, 6, 9, 12 | 1B, 2B, 3B, 4B | Second input per gate - independently protected and level-agnostic |
| 7 | GND | Dedicated ground reference - decoupling capacitor must be placed adjacent to this pin |
| 14 | VCC | Single positive supply - powers all four gates; no separate VDD/VSS required |
Key Features
| Feature | Design Value |
|---|---|
| Power-down input protection | Inputs tolerate −0.5V to +7.0V with VCC = 0V - prevents backfeeding and latch-up during partial power-up |
| Symmetrical output drive | |IOH| = |IOL| ≥ 8mA - eliminates skew in fanout-heavy routing and ensures consistent rise/fall times |
| High noise immunity | VNIH = VNIL ≥ 28% VCC - rejects >1.4V noise spikes on 5V lines and >0.8V on 3V lines |
| Low dynamic noise | VOLP ≤ 0.8V at CL = 50pF - reduces crosstalk in dense PCB layouts with shared ground planes |
| Hot-swap capable | No external components needed for safe insertion into live backplanes - enabled by input clamp diodes and current-limited outputs |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Isolating sensor interrupt signals before feeding into microcontroller GPIOs with mixed 3.3V/5V supply rails. IC Role / Device Role / Timing Role: Level-translating NOR gate performing active-low signal arbitration and noise filtering. Use Value: Eliminates need for discrete voltage translators and RC filters while maintaining <5ns timing margin in 100kHz polling loops. | Use Scenario: Combining door lock status and window position signals for centralized fault detection in LIN-connected modules. IC Role / Device Role / Timing Role: Combinatorial logic element generating fault flags with deterministic propagation under 6.5ns worst-case delay. Use Value: Enables real-time response within 10µs system timeout windows without adding MCU firmware overhead. |
| Medical Infusion Pump Controllers | Consumer Smart Home Hubs |
Use Scenario: Validating dual-redundant motor enable signals before activating safety-critical stepper drivers. IC Role / Device Role / Timing Role: Fail-safe logic gate verifying simultaneous assertion of two independent control paths. Use Value: Provides hardware-enforced AND-NOT behavior with <10ns setup time margin relative to driver enable edge. | Use Scenario: Merging motion sensor triggers and ambient light readings to activate Zigbee radio wake-up events. IC Role / Device Role / Timing Role: Low-power combinatorial gate enabling event-driven sleep/wake transitions. Use Value: Reduces average system current by 12µA via 2µA quiescent draw while preserving sub-millisecond response latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74VHC02PW | TSSOP-14, identical AC/DC specs, TI-branded; same pinout and thermal profile | No functional difference - validated drop-in replacement in TI-design reference schematics | Select when sourcing from TI-authorized channels or requiring TI-specific qualification documentation |
| MC74VHC02DT | TSSOP-14, ON Semiconductor variant; identical logic function but VIH/VIL thresholds tested at 25°C only | Marginally reduced noise immunity below −40°C due to wider VIL min spec (0.3VCC vs 0.28VCC) | Prefer for cost-sensitive industrial designs where extended temperature validation is not required |
Compared with SN74VHC02PW and MC74VHC02DT, the 74VHC02TTR offers fully characterized performance across −55°C to +125°C, tighter VOLP control (0.8V max vs 1.0V), and documented 2kV HBM ESD rating - making it optimal for automotive and medical applications demanding full-specification traceability.
Availability
74VHC02TTR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74VHC02TTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The 74VHC logic family targets high-speed, low-power, mixed-voltage digital interfacing - specifically engineered to replace obsolete 74LS and 74HC devices while supporting modern 3.3V/5V system architectures.
FAQ
Can 74VHC02TTR operate with VCC = 2.3V while accepting 5V inputs?
Yes. The device guarantees full functionality at VCC = 2.3V and accepts input voltages from −0.5V to +7.0V regardless of supply state. This enables direct connection of 5V sensors to a 2.3V-powered microcontroller interface without external level shifters or resistive dividers.
What is the maximum capacitive load the outputs can drive reliably?
The outputs maintain specified tPLH/tPHL and VOL/VOH performance up to 50pF load capacitance at 5V. For loads exceeding 50pF, propagation delay increases linearly (e.g., +2.5ns per additional 10pF at 5V), and VOH drops below 4.4V at 8mA sink current beyond that point.
Does 74VHC02TTR require external pull-up or pull-down resistors on unused inputs?
No. Unused inputs may be left floating because internal circuitry includes power-down protection and input clamping diodes. However, for best noise immunity in high-EMI environments, tying unused inputs to VCC or GND is recommended - no resistor required due to integrated protection.
How does the 74VHC02TTR handle simultaneous switching of multiple outputs?
When up to three outputs switch concurrently (per Figure 9 test condition), dynamic ground bounce (VOLP) remains ≤0.8V at CL = 50pF. The internal layout and symmetrical drive minimize simultaneous switching noise, eliminating need for extra ground vias or split-plane isolation in standard 4-layer PCBs.
74VHC02TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74VHC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NOR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.5V
- Input Logic Level - High:
- 1.5V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74VHC02TTR FAQ
1.How can I place an order for 74VHC02TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC02TTR 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 74VHC02TTR reliable?
The price and inventory of 74VHC02TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC02TTR is usually 5 days.
3.What payment methods are accepted for 74VHC02TTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC02TTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC02TTR?
74VHC02TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC02TTR 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 74VHC02TTR?
For technical support, including 74VHC02TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC02TTR requirements.
6.How does Aetrix verify that 74VHC02TTR is sourced from the original manufacturer or authorized distributors?
All 74VHC02TTR 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 74VHC02TTR meets industry standards.
7.What is the process for return or replacement of 74VHC02TTR?
All 74VHC02TTR units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC02TTR, 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 74VHC02TTR part is unused and in its original packaging.
Return procedure for 74VHC02TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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