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Nexperia USA Inc. 74HCT3G34DP,125
- Part No.:
- 74HCT3G34DP,125
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
74HCT3G34DP,125.pdf
- Description:
- IC BUF NON-INVERT 5.5V 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,614
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Product details
Overview
74HCT3G34DP,125 from Nexperia is a triple non-inverting buffer gate in TSSOP8 (SOT505-2) package, designed for level translation and signal conditioning in mixed-voltage digital systems. It features TTL-compatible inputs (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), operates from 4.5 V to 5.5 V, delivers ±4.0 mA output drive, supports -40 °C to +125 °C ambient range, and integrates input clamp diodes enabling safe interfacing to voltages exceeding VCC via current-limiting resistors - used in industrial control I/O expansion and microcontroller peripheral buffering.
For engineers reviewing the 74HCT3G34DP,125 datasheet, 74HCT3G34DP,125 pinout, 74HCT3G34DP,125 application, or 74HCT3G34DP,125 equivalent, key selection criteria include TTL-level input compatibility, guaranteed 10 ns typical propagation delay at 4.5 V, low 0.33 V VOL at 4.0 mA load, 1.5 pF input capacitance, and SOT505-2 thermal derating (4.6 mW/K above 96 °C).
Technical Context
The 74HCT3G34DP,125 implements three independent CMOS-based non-inverting buffers with TTL-compatible input thresholds, allowing direct connection to legacy 5 V TTL logic while powered from 4.5–5.5 V supplies. Its input clamp diodes support overvoltage-tolerant interfacing without external protection components.
Each buffer provides rail-to-rail output swing, specified static drive capability (VOH ≥ 3.7 V at -4.0 mA, VOL ≤ 0.4 V at +4.0 mA), and dynamic performance characterized by tpd ≤ 29 ns (max) and tt ≤ 25 ns (max) across -40 °C to +125 °C, with CPD = 9 pF for dynamic power estimation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Triple non-inverting buffer (3× 1-input, 1-output) |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-supply systems |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - guarantees reliable recognition of TTL logic levels |
| Output Drive | ±4.0 mA - sufficient to drive 10 LSTTL loads or moderate PCB traces |
| Propagation Delay | tpd ≤ 29 ns (max) at VCC = 4.5 V, Tamb = +125 °C - enables use in sub-35 MHz synchronous paths |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood, industrial, and extended-range embedded applications |
| Input Capacitance | CI = 1.5 pF - minimizes capacitive loading on driving sources and preserves signal edge integrity |
Pinout & Package
TSSOP8 package (SOT505-2): plastic thin shrink small outline, 8 leads, 3 mm body width, 0.5 mm lead length, 0.65 mm pitch, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6 | 1A, 2A, 3A - data inputs | Independent TTL-level input pins; each includes clamp diode to VCC and GND for overvoltage tolerance |
| 2, 5, 7 | 3Y, 2Y, 1Y - data outputs | CMOS push-pull outputs; full rail-swing, capable of sourcing/sinking 4.0 mA |
| 4 | GND | Ground reference (0 V); must be low-impedance connection to minimize noise coupling |
| 8 | VCC | Positive supply (4.5–5.5 V); requires local 100 nF ceramic decoupling within 5 mm |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Enables direct interface with legacy 5 V TTL logic without level shifters or pull-ups |
| Input clamp diodes | Allows safe connection to signals up to VCC + 0.5 V using series current-limiting resistors |
| High noise immunity | Typical VIH–VIL margin > 1.2 V at 5 V supply ensures robust operation in electrically noisy environments |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overstress |
| ESD protection | HBM > 2000 V, CDM > 1000 V - reduces risk of handling damage in manufacturing and field service |
Applications
| Industrial PLC I/O Expansion | Microcontroller GPIO Buffering |
|---|---|
Use Scenario: Isolating and strengthening digital I/O lines between a 3.3 V microcontroller and 5 V industrial sensors/actuators. IC Role / Device Role / Timing Role: Signal-level translator and drive booster for bidirectional control signals in modular I/O racks. Use Value: Eliminates need for discrete level-shifting circuitry while maintaining <30 ns timing budget and supporting extended temperature operation. |
Use Scenario: Driving multiple parallel LED indicators or optocoupler inputs from a single MCU GPIO pin. IC Role / Device Role / Timing Role: Fan-out buffer that triples signal availability without degrading edge rate or logic threshold fidelity. Use Value: Enables one GPIO to control three independent loads with guaranteed VOL ≤ 0.33 V at 4 mA, preserving noise margin. |
| Legacy System Interface Adapter | Test Equipment Signal Conditioning |
Use Scenario: Interfacing modern FPGA development boards (3.3 V LVCMOS) to vintage 5 V TTL test fixtures. IC Role / Device Role / Timing Role: Input-level translator and output driver ensuring protocol-compliant voltage thresholds and timing margins. Use Value: Provides deterministic VIH/VIL alignment with TTL standards and maintains tpd ≤ 29 ns for accurate stimulus/response capture. |
Use Scenario: Cleaning and amplifying low-amplitude clock or trigger signals in automated test equipment (ATE) front-ends. IC Role / Device Role / Timing Role: Low-capacitance, low-skew buffer isolating sensitive measurement circuitry from noisy control buses. Use Value: 1.5 pF input capacitance minimizes source loading; 0.65 mm pitch TSSOP8 allows dense routing near high-speed nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT3G34DC,125 | VSSOP8 (SOT765-1) package: 2.3 mm body width, 0.5 mm pitch, higher thermal resistance (4.9 mW/K derating above 99 °C) | Better suited for ultra-dense PCB layouts where footprint area is constrained more than thermal budget | Select when board space is critical and peak power dissipation remains below 150 mW |
| SN74LVC3G34DCUR | Lower VCC range (1.65–5.5 V), CMOS inputs (not TTL), 32 mA output drive, higher ICC (max 10 μA vs. 20 μA) | Supports 1.8 V/2.5 V/3.3 V/5 V mixed-supply systems but lacks native TTL threshold compatibility | Choose only if system uses exclusively CMOS logic families and requires wider supply flexibility or higher drive strength |
Compared with 74HCT3G34DC,125, the 74HCT3G34DP,125 offers lower thermal resistance and larger solderable land pattern for improved manufacturability; versus SN74LVC3G34DCUR, it provides guaranteed TTL input compatibility at 5 V but sacrifices multi-voltage operation and peak output current.
Availability
74HCT3G34DP,125 is available at Aetrix Electronics and suitable for industrial automation interfaces, automotive body control modules, and test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT3G34DP,125 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.
The 74HCT3G34DP,125 belongs to Nexperia's 74HCT logic family, engineered specifically for robust 5 V TTL interoperability in harsh-environment digital systems with extended temperature and ESD resilience requirements.
FAQ
What is the maximum recommended operating frequency for 74HCT3G34DP,125?
The device does not specify a maximum clock frequency, but its worst-case propagation delay is 29 ns at VCC = 4.5 V and Tamb = +125 °C. For reliable setup/hold timing in synchronous systems, this supports data rates up to approximately 17 MHz in single-stage buffering configurations, assuming minimal interconnect delay and adequate signal integrity margins.
Can 74HCT3G34DP,125 be used with a 3.3 V supply?
No - the 74HCT3G34DP,125 is specified only for VCC = 4.5 V to 5.5 V. At 3.3 V, TTL input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) would not be met reliably, and output drive strength degrades significantly. Use 74LVC3G34 or 74AUP3G34 for 3.3 V operation.
Does 74HCT3G34DP,125 require external pull-up or pull-down resistors on unused inputs?
Unused inputs must be terminated to VCC or GND - floating inputs cause increased ICC, unpredictable output states, and potential oscillation. The internal structure lacks weak pull-ups/pull-downs; external termination is mandatory per JEDEC guidelines and Nexperia's application notes for HCT logic.
Is 74HCT3G34DP,125 qualified for automotive applications?
No - this part is not AEC-Q100 qualified and carries no automotive grade designation in its ordering information or datasheet. It is rated for industrial temperature (-40 °C to +125 °C) but lacks automotive-specific stress testing, failure analysis, or PPAP documentation required for vehicle subsystems.
74HCT3G34DP,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 3
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Push-Pull
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
74HCT3G34DP,125 FAQ
1.How can I place an order for 74HCT3G34DP,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT3G34DP,125 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 74HCT3G34DP,125 reliable?
The price and inventory of 74HCT3G34DP,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT3G34DP,125 is usually 5 days.
3.What payment methods are accepted for 74HCT3G34DP,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT3G34DP,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT3G34DP,125?
74HCT3G34DP,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT3G34DP,125 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 74HCT3G34DP,125?
For technical support, including 74HCT3G34DP,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT3G34DP,125 requirements.
6.How does Aetrix verify that 74HCT3G34DP,125 is sourced from the original manufacturer or authorized distributors?
All 74HCT3G34DP,125 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 74HCT3G34DP,125 meets industry standards.
7.What is the process for return or replacement of 74HCT3G34DP,125?
All 74HCT3G34DP,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT3G34DP,125, 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 74HCT3G34DP,125 part is unused and in its original packaging.
Return procedure for 74HCT3G34DP,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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