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Nexperia USA Inc. 74HCT1G125GW,165
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- Part No.:
- 74HCT1G125GW,165
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74HCT1G125GW,165.pdf
- Description:
- IC BUF NON-INVERT 5.5V 5TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
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Product details
Overview
74HCT1G125GW,165 from Nexperia is a single 3-state bus buffer/line driver with TTL-compatible inputs, 5-pin TSSOP5 (SOT353-1) package, VCC range 4.5–5.5 V, propagation delay ≤30 ns at 5 V/50 pF, and operation from −40 °C to +125 °C - used for bidirectional data isolation in microcontroller I/O expansion and legacy parallel bus interfacing.
For engineers reviewing the 74HCT1G125GW,165 datasheet, 74HCT1G125GW,165 pinout, 74HCT1G125GW,165 application, or 74HCT1G125GW,165 equivalent, key selection criteria include TTL-level input compatibility, 3-state output timing (enable/disable <42 ns), thermal derating above 74 °C, and SOT353-1 footprint constraints in space-constrained PCB layouts.
Technical Context
This device implements a single non-inverting buffer with active-low 3-state enable control (OE), enabling precise bus contention management in shared-data-path systems. Its TTL-input thresholds (VIH ≥2.0 V, VIL ≤0.8 V at VCC = 5 V) ensure reliable interfacing with legacy 5 V logic families.
Propagation delay (tpd ≤30 ns), enable time (ten ≤42 ns), and disable time (tdis ≤38 ns) are specified under CL = 50 pF and VCC = 4.5–5.5 V, supporting stable signal integrity in high-speed digital control paths up to ~10 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V supply rails and avoids undervoltage lockout in industrial control modules. |
| Input Logic Type | TTL-level - accepts 0.8 V max low and 2.0 V min high inputs, eliminating need for level-shifting when driving from 5 V microcontrollers or FPGAs. |
| tpd (A→Y) | ≤30 ns at VCC = 4.5 V, CL = 50 pF - guarantees deterministic timing margin for synchronous bus handshaking in real-time embedded systems. |
| ten / tdis | ≤42 ns / ≤38 ns at VCC = 4.5 V - enables rapid bus arbitration without glitches during multi-master peripheral access. |
| IOZ (Off-State Leakage) | ≤10 μA at VCC = 5.5 V - prevents unintended current paths when outputs are disabled, critical for low-power sleep modes. |
| Operating Temperature | −40 °C to +125 °C - supports deployment in under-hood automotive ECUs, industrial motor drives, and outdoor power electronics. |
| ESD Rating | HBM >2000 V, CDM >1000 V - provides robust handling tolerance during automated PCB assembly and field service. |
Pinout & Package
TSSOP5 (SOT353-1) plastic thin shrink small outline package: 5-lead, 1.25 mm body width, 0.65 mm pitch, 1.1 mm height - optimized for high-density routing and reflow compatibility in compact consumer and industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output enable (active LOW) | Drives Y into high-impedance state when HIGH; synchronizes bus release with system control signals. |
| 2 (A) | Data input | Accepts TTL-level logic; clamped diodes allow safe overvoltage tolerance with external current-limiting resistors. |
| 3 (GND) | Ground reference | 0 V return path for all internal logic and output stages; must be low-inductance connection to minimize switching noise. |
| 4 (Y) | 3-state buffered output | Non-inverting drive capable of sourcing/sinking ±6 mA; high-Z state isolates downstream loads during bus arbitration. |
| 5 (VCC) | Supply voltage | Primary power rail; requires local 100 nF ceramic decoupling adjacent to pin to suppress supply bounce during output transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Symmetrical output impedance | Enables matched rise/fall times (tPLH ≈ tPHL), reducing signal skew in timing-critical control lines. |
| Clamp diodes on inputs | Permits direct interface to voltages exceeding VCC when used with series current-limiting resistors - simplifies mixed-voltage board design. |
| Latch-up immunity >100 mA | Guarantees robustness against transient overcurrent events per JESD78 Class II Level B, enhancing field reliability. |
| Low ICC (≤20 μA) | Minimizes quiescent power draw in always-on monitoring circuits, extending battery life in portable diagnostic tools. |
| JEDEC-compliant packaging | SOT353-1 meets JESD22-A114 (HBM) and JESD22-C101 (CDM), ensuring compatibility with industry-standard ESD handling protocols. |
Applications
| Microcontroller I/O Expansion | Legacy Parallel Bus Interface |
|---|---|
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU by connecting multiple peripherals (ADC, DAC, EEPROM) to a shared 8-bit data bus. IC Role / Device Role / Timing Role: Acts as direction-controlled buffer between MCU data bus and peripheral data lines, enabling software-selectable read/write isolation. Use Value: Eliminates need for discrete MOSFET switches or complex CPLD logic; 3-state control reduces PCB layer count and routing complexity. |
Use Scenario: Interfacing a modern FPGA development board to vintage parallel printer or scanner hardware using IEEE 1284-compliant signaling. IC Role / Device Role / Timing Role: Provides TTL-compatible input buffering and controlled bus release timing to meet strict setup/hold windows of legacy peripherals. Use Value: Ensures reliable handshaking without timing violations, even at 2–5 MHz bus rates, avoiding data corruption during bulk transfers. |
| Industrial Sensor Hub Aggregation | Automotive Body Control Module |
Use Scenario: Consolidating analog sensor readings (temperature, humidity, pressure) from multiple remote nodes onto a central CAN-to-parallel bridge controller. IC Role / Device Role / Timing Role: Buffers and gates sensor data streams under microcontroller command, preventing bus contention during concurrent ADC conversions. Use Value: Enables deterministic sampling sequence control with sub-100 ns timing resolution, improving measurement repeatability across temperature extremes. |
Use Scenario: Isolating diagnostic communication lines (K-line, LIN) from main ECU power domain in a 12 V automotive body control unit. IC Role / Device Role / Timing Role: Provides fail-safe 3-state isolation during ECU reset or firmware update, blocking spurious signals from corrupting diagnostic sessions. Use Value: Meets ISO 16750-2 pulse test requirements via robust latch-up immunity and extended temperature operation, reducing field failure rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC1G125GW,165 | CMOS input thresholds (VIH ≥70% VCC), wider VCC range (1.65–5.5 V), lower ICC (≤1 μA), but reduced drive strength (±24 mA). | Better suited for mixed-voltage 3.3 V/1.8 V systems; not recommended for direct TTL source interfacing without level translation. | Select when operating below 3.3 V or requiring ultra-low static power; avoid if driving legacy 5 V loads. |
| SN74LVC1G125DBVR | Same CMOS input logic, identical pinout (SOT-23-5), but rated only to +85 °C and lacks JESD78 Class II latch-up certification. | Approved for commercial-grade applications only; unsuitable for under-hood or industrial environments requiring extended temperature compliance. | Choose for cost-sensitive consumer designs with ambient temperature <70 °C; verify thermal margin before use in enclosed enclosures. |
Compared with 74LVC1G125GW,165 and SN74LVC1G125DBVR, the 74HCT1G125GW,165 uniquely delivers TTL-input compatibility, −40 °C to +125 °C operation, and Class II latch-up immunity - making it the only option qualified for robust industrial and automotive-adjacent bus isolation where legacy logic interfacing and thermal resilience are mandatory.
Availability
74HCT1G125GW,165 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, legacy parallel bus interface, industrial sensor hub aggregation, and automotive body control module applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT1G125GW,165 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, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial, automotive, and computing markets.
The 74HCT series targets robust interoperability between TTL and CMOS logic domains in mission-critical embedded systems, emphasizing wide temperature operation, ESD resilience, and JEDEC-compliant packaging for high-volume manufacturing.
FAQ
Can 74HCT1G125GW,165 operate reliably at 3.3 V supply?
No - the 74HCT1G125GW,165 is specified only for VCC = 4.5–5.5 V. At 3.3 V, TTL input thresholds (VIH ≥2.0 V) become marginal, and VOH/VOL performance degrades beyond guaranteed limits. Use 74LVC1G125GW,165 instead for 3.3 V systems.
What is the maximum capacitive load this buffer can drive while maintaining timing specs?
Timing parameters (tpd, ten, tdis) are guaranteed up to CL = 50 pF. Driving >50 pF increases propagation delay nonlinearly and may violate setup/hold margins; for >100 pF loads, add series termination or use a higher-drive buffer like 74HCT244.
Does the OE pin require a pull-up resistor in normal operation?
No - OE is internally uncommitted and must be actively driven HIGH or LOW. Leaving OE floating risks metastability and undefined output state; tie to GND (always-enabled) or microcontroller GPIO (software-controlled) with no pull-up needed.
How does the 3-state disable behavior affect power consumption in standby mode?
In 3-state (OE = HIGH), ICC drops to ≤20 μA and IOZ remains ≤10 μA - effectively eliminating dynamic power draw from the output stage. This enables true zero-current bus hold during system sleep, critical for battery-powered diagnostics tools.
74HCT1G125GW,165 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSSOP
74HCT1G125GW,165 FAQ
1.How can I place an order for 74HCT1G125GW,165 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT1G125GW,165 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 74HCT1G125GW,165 reliable?
The price and inventory of 74HCT1G125GW,165 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT1G125GW,165 is usually 5 days.
3.What payment methods are accepted for 74HCT1G125GW,165?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT1G125GW,165 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT1G125GW,165?
74HCT1G125GW,165 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT1G125GW,165 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 74HCT1G125GW,165?
For technical support, including 74HCT1G125GW,165 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT1G125GW,165 requirements.
6.How does Aetrix verify that 74HCT1G125GW,165 is sourced from the original manufacturer or authorized distributors?
All 74HCT1G125GW,165 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 74HCT1G125GW,165 meets industry standards.
7.What is the process for return or replacement of 74HCT1G125GW,165?
All 74HCT1G125GW,165 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT1G125GW,165, 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 74HCT1G125GW,165 part is unused and in its original packaging.
Return procedure for 74HCT1G125GW,165:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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