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Nexperia USA Inc. 74AHCT1G125GW,165
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- Part No.:
- 74AHCT1G125GW,165
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHCT1G125GW,165.pdf
- Description:
- IC BUF NON-INVERT 5.5V 5TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,388
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Product details
Overview
74AHCT1G125GW,165 from Nexperia is a single 3-state bus buffer/line driver with TTL-compatible inputs and overvoltage-tolerant inputs up to 5.5 V, operating from 4.5 V to 5.5 V supply. It delivers 8 ns typical propagation delay at 5 V/50 pF, supports –40 °C to +125 °C ambient range, and features symmetrical output impedance for clean signal integrity in mixed-voltage digital interfaces.
For engineers reviewing the 74AHCT1G125GW,165 datasheet, 74AHCT1G125GW,165 pinout, 74AHCT1G125GW,165 application, or 74AHCT1G125GW,165 equivalent, this device serves as a level-translating unidirectional buffer in microcontroller I/O expansion, FPGA peripheral interfacing, and legacy TTL-to-5 V CMOS bus isolation where low-power, fast enable/disable control and input overvoltage tolerance are required.
Technical Context
The 74AHCT1G125GW,165 implements a non-inverting 3-state buffer with active-low output enable (OE), enabling precise bus contention control. Its TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure compatibility with standard 5 V TTL logic families while maintaining CMOS power efficiency.
Input overvoltage tolerance to 5.5 V allows safe operation when interfacing with higher-voltage signals-even with VCC = 4.5 V-eliminating external clamping diodes in mixed-supply systems. The device uses silicon-gate CMOS technology with latch-up immunity exceeding 100 mA per JESD78 Class II Level A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - Ensures robust operation across industrial 5 V rails with ±5% tolerance. |
| Propagation delay (tpd) | 4.8 ns typ @ 5 V/50 pF - Enables high-speed data transfer in 25 MHz+ synchronous buses. |
| Enable time (ten) | 5.1 ns typ @ 5 V/50 pF - Supports rapid bus arbitration and dynamic peripheral activation. |
| Disable time (tdis) | 6.1 ns typ @ 5 V/50 pF - Minimizes bus turnaround dead time in bidirectional shared-data applications. |
| Output drive strength | ±8 mA @ VOH/VOL - Sufficient to drive 10 LSTTL loads or 15 pF–50 pF PCB traces without signal degradation. |
| Input voltage tolerance | Up to 5.5 V independent of VCC - Permits direct connection to 5 V signals even when powered from 4.5 V. |
| Operating temperature | –40 °C to +125 °C - Qualified for under-hood automotive modules, industrial PLCs, and high-reliability embedded controllers. |
Pinout & Package
TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-lead, 1.25 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low output enable | Drives Y to high-impedance state when HIGH; enables buffered pass-through of A→Y when LOW. |
| 2 - A | Data input | TTL-compatible input accepting 0–5.5 V; no external pull-up required for open-drain host interfaces. |
| 3 - GND | Ground reference | 0 V return path for all internal circuitry and output current; must be low-inductance for noise immunity. |
| 4 - Y | 3-state output | Non-inverting buffered output with symmetrical rise/fall times; drives bus or load only when OE = LOW. |
| 5 - VCC | Power supply | Primary 4.5–5.5 V supply rail; decoupling capacitor (100 nF) recommended within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-input compatibility | VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V - Directly interfaces legacy 5 V TTL outputs without level shifters. |
| Overvoltage-tolerant inputs | Withstands 5.5 V on A/OE pins regardless of VCC (down to 4.5 V) - Eliminates need for external protection in mixed-rail designs. |
| Low dynamic power | CPD = 11 pF - Limits switching power to <1 μW/MHz at 5 V, critical for battery-backed or thermally constrained modules. |
| High noise immunity | Typical HNM = 0.9 V, LNM = 0.7 V at VCC = 5 V - Resists EMI-induced glitches on shared PCB traces or noisy industrial environments. |
| Industrial temperature grade | Specified from –40 °C to +125 °C - Validated for continuous operation in engine control units, motor drives, and outdoor telecom equipment. |
Applications
| Microcontroller I/O Expansion | FPGA Peripheral Interface |
|---|---|
Use Scenario: Expanding limited GPIO count of an ARM Cortex-M0+ MCU to drive multiple SPI peripherals and status LEDs. IC Role / Device Role / Timing Role: Unidirectional buffer isolating MCU pins from capacitive bus loading; OE controlled by GPIO to gate peripheral access. Use Value: Prevents signal integrity collapse on 30 cm ribbon cables carrying clock/data to remote sensors, leveraging 8 ns tpd and 5.1 ns ten for tight timing budgets. |
Use Scenario: Interfacing Xilinx Artix-7 FPGA bank (3.3 V LVCMOS) to legacy 5 V industrial DAC and ADC modules. IC Role / Device Role / Timing Role: Level-translating buffer with TTL input thresholds, enabling reliable recognition of FPGA's 3.3 V HIGH as valid logic HIGH. Use Value: Overvoltage-tolerant A/OE pins accept 5 V control signals directly, avoiding external resistive dividers and reducing BOM count by one component per channel. |
| Legacy System Bus Isolation | Automotive Body Control Module |
Use Scenario: Isolating aging 74LS138 decoder outputs from modern 5 V microcontroller inputs in retro-computing restoration projects. IC Role / Device Role / Timing Role: 3-state buffer acting as bidirectional-enabling switch; OE tied to system reset to force high-Z during boot. Use Value: Symmetrical output impedance ensures matched rise/fall edges (<1 ns skew), preserving setup/hold margins for 10 MHz address decoding clocks. |
Use Scenario: Driving LIN transceiver enable lines and sensor bias voltages in a vehicle door module exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: Robust interface buffer between MCU and external analog front-end ICs, surviving repeated thermal shock from –40 °C to +125 °C. Use Value: –40 °C to +125 °C qualification and 100 mA latch-up immunity prevent field failures due to ESD events during assembly or service. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHC1G125GW,165 | CMOS-input version; VIH = 3.85 V min at VCC = 5.5 V - requires ≥3.85 V to guarantee HIGH recognition. | Suitable for pure CMOS systems (e.g., 3.3 V MCU driving 5 V bus); not compatible with 5 V TTL outputs. | Select when interfacing with 3.3 V logic families or when lowest ICC (<1 μA) is critical; avoid for TTL source connections. |
| SN74LVC1G125DBVR | 3.3 V only supply (1.65–5.5 V); VIH = 2.0 V min at VCC = 3.3 V; tpd = 3.7 ns @ 3.3 V/50 pF. | Better suited for 3.3 V domains with tighter timing; lacks –40 °C to +125 °C rating (only –40 °C to +125 °C for some variants, but not guaranteed). | Prefer for cost-sensitive consumer electronics with 3.3 V rails; verify temperature spec per batch - not qualified for extended automotive use. |
Compared with 74AHC1G125GW,165 and SN74LVC1G125DBVR, the 74AHCT1G125GW,165 uniquely combines TTL input compatibility, full industrial temperature range, and overvoltage tolerance - making it the only choice for robust 5 V legacy interfacing in harsh environments without redesigning the signal chain.
Availability
74AHCT1G125GW,165 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, FPGA peripheral interface, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT1G125GW,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 optimized for efficiency, reliability, and miniaturization in industrial, automotive, and computing applications.
The 74AHCT series targets robust 5 V digital interfacing, emphasizing TTL compatibility, wide temperature operation, and overvoltage resilience for legacy system integration and high-reliability embedded control.
FAQ
Can 74AHCT1G125GW,165 operate with a 3.3 V supply?
No. The 74AHCT1G125GW,165 is specified only for 4.5 V to 5.5 V supply operation. At 3.3 V, its TTL input thresholds (VIH ≥ 2.0 V) may not be met reliably, and output drive strength degrades significantly below 4.5 V. Use 74AHC1G125GW,165 or 74LVC1G125 for 3.3 V systems.
What is the maximum capacitive load this buffer can drive?
The device is characterized up to 50 pF load capacitance with guaranteed timing (tpd ≤ 9.5 ns, ten ≤ 9.5 ns). Driving >50 pF increases propagation and enable/disable delays nonlinearly and may cause ringing; for >50 pF, add series termination or use a higher-drive buffer like 74AHCT244.
Is the OE pin 5.5 V tolerant when VCC = 4.5 V?
Yes. All inputs-including OE-are overvoltage tolerant to 5.5 V independent of VCC level. This allows OE to be driven directly from a 5 V controller signal even when VCC is 4.5 V, eliminating level-shifter components in mixed-rail enable control paths.
Does this part have built-in ESD protection?
Yes. It meets HBM ESD rating >2000 V (ANSI/ESDA/JEDEC JS-001 Class 2) and CDM rating >1000 V (JS-002 Class C3), providing robust handling protection during PCB assembly and field service without requiring external TVS diodes on input pins.
74AHCT1G125GW,165 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- 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:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSSOP
74AHCT1G125GW,165 FAQ
1.How can I place an order for 74AHCT1G125GW,165 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G125GW,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 74AHCT1G125GW,165 reliable?
The price and inventory of 74AHCT1G125GW,165 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G125GW,165 is usually 5 days.
3.What payment methods are accepted for 74AHCT1G125GW,165?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G125GW,165 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G125GW,165?
74AHCT1G125GW,165 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G125GW,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 74AHCT1G125GW,165?
For technical support, including 74AHCT1G125GW,165 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G125GW,165 requirements.
6.How does Aetrix verify that 74AHCT1G125GW,165 is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G125GW,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 74AHCT1G125GW,165 meets industry standards.
7.What is the process for return or replacement of 74AHCT1G125GW,165?
All 74AHCT1G125GW,165 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G125GW,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 74AHCT1G125GW,165 part is unused and in its original packaging.
Return procedure for 74AHCT1G125GW,165:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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