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Texas Instruments CD74HC125QM96Q1
- Part No.:
- CD74HC125QM96Q1
- Manufacturer:
- Texas Instruments
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CD74HC125QM96Q1.pdf
- Description:
- IC BUFFER NON-INVERT 6V 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,633
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Product details
Overview
CD74HC125QM96Q1 from Texas Instruments is an automotive-grade quadruple 3-state buffer IC performing Y = A logic per channel, operating from 2 V to 6 V supply, with ±25 mA output drive capability and –40°C to +125°C temperature range, used for bidirectional bus isolation and signal enable control in vehicle infotainment and body control modules.
For engineers reviewing the CD74HC125QM96Q1 datasheet, CD74HC125QM96Q1 pinout, CD74HC125QM96Q1 application, or CD74HC125QM96Q1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification, SOIC-14 package, active-low 3-state enable inputs, propagation delay ≤26 ns at 6 V, and balanced CMOS output drive for noise-immune digital interfacing.
Technical Context
This device implements four independent non-inverting buffers, each with a dedicated active-low 3-state output enable (OE) input. Each channel operates as a transparent gate: when OE is low, Y follows A; when OE is high, Y enters high-impedance state. All inputs are standard CMOS with clamp diodes and ≤10 pF input capacitance.
It uses silicon-gate CMOS technology with balanced output structure enabling symmetrical sourcing/sinking (±25 mA), supports fanout of up to 10 LSTTL loads, and features input transition rate requirements (≤400 ns/V at 6 V) to prevent shoot-through current and oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2 V to 6 V - Enables direct interface with 3.3 V and 5 V logic systems without level shifters. |
| Operating Temperature | –40°C to +125°C - Qualified per AEC-Q100 Grade 1 for under-hood and cabin electronics. |
| Propagation Delay | 17 ns max at 6 V, CL = 50 pF - Ensures timing-critical signal routing in real-time control paths. |
| Output Drive | ±25 mA - Sustains robust drive into moderate capacitive loads (≤70 pF) without external buffering. |
| Input Leakage | ±1 µA max at 6 V - Minimizes static power draw and enables reliable pull-up/pull-down termination. |
| Power Dissipation Cap. | 29 pF per gate at 5 V - Used to calculate dynamic power consumption in high-frequency switching applications. |
| ESD Rating | HBM ±2000 V, CDM ±1000 V - Meets automotive ESD immunity requirements per AEC-Q100-002/011. |
Pinout & Package
CD74HC125QM96Q1 is housed in a 14-pin SOIC (D) package measuring 8.70 mm × 3.90 mm, with 1.27 mm lead pitch and 1.75 mm max height, RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable (4×) | Each independently controls 3-state output of corresponding buffer; pulled high disables output. |
| 1A–4A | Buffer input (4×) | Standard CMOS input with clamp diodes; must be terminated to VCC or GND if unused. |
| 1Y–4Y | Buffer output (4×) | 3-state CMOS output capable of sourcing/sinking ±25 mA; floats when OE is high. |
| VCC | Positive supply | Single rail powering all four buffers; requires local 0.1 µF bypass capacitor. |
| GND | Ground reference | Common return path for all I/O and supply currents; critical for noise suppression and thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across –40°C to +125°C ambient, supporting safety-critical ECUs. |
| Balanced CMOS 3-state outputs | Enables bidirectional bus sharing without contention; eliminates need for external bus transceivers. |
| Wide 2 V–6 V supply range | Permits interoperability across legacy 5 V and modern 3.3 V subsystems within same vehicle architecture. |
| Input clamp diodes (±) | Protects against transient overvoltage events common in automotive 12 V battery environments. |
| Low ICC (160 µA max) | Reduces quiescent power in always-on modules such as gateway controllers and sensor hubs. |
Applications
| Automotive Body Control Module | Infotainment System Bus Isolation |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from door lock actuators and window motor drivers. IC Role / Device Role / Timing Role: Quad buffer provides independent enable-controlled signal routing between MCU and peripheral drivers. Use Value: Prevents back-driving during power sequencing and enables safe hot-swap of modules without bus contention. |
Use Scenario: Enabling/disabling audio data lines between DSP and codec in head unit design. IC Role / Device Role / Timing Role: 3-state outputs isolate I²S or SPDIF paths during system sleep or error recovery. Use Value: Eliminates signal leakage and ground bounce during state transitions, improving audio SNR. |
| Instrument Cluster Display Interface | ADAS Camera Data Multiplexing |
|
Use Scenario: Driving segment-select signals to multiplexed LCD driver ICs in digital dashboards. IC Role / Device Role / Timing Role: Buffers amplify and time-align parallel address/data lines to display controller. Use Value: Maintains signal integrity across PCB traces up to 10 cm, reducing bit errors at 1 MHz update rates. |
Use Scenario: Selectively routing MIPI CSI-2 clock or control signals between multiple camera sensors and SoC. IC Role / Device Role / Timing Role: Enables time-multiplexed sensor arbitration using synchronized OE control. Use Value: Avoids simultaneous clock injection into shared lanes, preventing jitter accumulation in image capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC125AQPWRQ1 | Lower 1.65–5.5 V supply range; 3.3 V optimized; faster tpd (5.5 ns @ 3.3 V); higher IOZ (±5 µA). | Better suited for 3.3 V-only domains; not recommended for mixed-voltage 5 V legacy interfaces. | Select when targeting lower power and tighter timing margins in 3.3 V automotive subsystems. |
| CD74HC244QM96Q1 | Octal (8-channel) version; identical voltage/temp specs; same SOIC-20 package; higher pin count. | Used where more buffering channels are needed per package; requires PCB redesign due to different footprint. | Choose for space-constrained designs needing >4 buffers without increasing component count. |
Compared with SN74LVC125AQPWRQ1 and CD74HC244QM96Q1, the CD74HC125QM96Q1 offers optimal voltage flexibility (2–6 V) and pin-compatible upgrade path from legacy HC logic, while maintaining AEC-Q100 compliance without requiring layout changes for SOIC-14 footprints.
Availability
CD74HC125QM96Q1 is available at Aetrix Electronics and suitable for automotive body control, infotainment interface, instrument cluster display, ADAS sensor arbitration, and gateway controller applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74HC125QM96Q1 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
Texas Instruments is a global semiconductor company designing analog, embedded processing, and logic solutions for automotive, industrial, and communications markets.
The CD74HC125QM96Q1 belongs to TI's automotive-qualified HC logic family, engineered specifically for robust signal conditioning and bus management in harsh-temperature vehicle subsystems.
FAQ
What is the maximum capacitive load the CD74HC125QM96Q1 can drive while meeting datasheet timing specifications?
The CD74HC125QM96Q1 is specified for CL ≤ 50 pF in switching characteristics tables. While it can drive up to 70 pF per output, exceeding 50 pF increases propagation delay and transition time beyond guaranteed limits. For reliable operation at full speed, keep total load (including trace and input capacitance) at or below 50 pF. The CD74HC125QM96Q1 datasheet explicitly recommends this limit for guaranteed timing compliance.
How should unused inputs on the CD74HC125QM96Q1 be handled in an automotive design?
Unused inputs on the CD74HC125QM96Q1 must be terminated to a defined logic level-either VCC or GND-to prevent floating states that cause excessive current draw, oscillation, or EMI. A 10-kΩ pull-up or pull-down resistor is recommended for unused 1A–4A or OE pins. This practice ensures stable operation across –40°C to +125°C and meets AEC-Q100 reliability requirements for the CD74HC125QM96Q1.
Does the CD74HC125QM96Q1 support hot insertion or live bus connection?
The CD74HC125QM96Q1 is not designed for hot insertion. Its inputs and outputs feature clamp diodes, but the device lacks bus-hold or powered-off protection circuitry. Connecting or disconnecting while powered risks violating absolute maximum ratings (e.g., VI > VCC + 0.5 V). For live bus applications, external protection (e.g., series resistors, TVS diodes) and controlled enable sequencing are required. The CD74HC125QM96Q1 specification does not guarantee safe hot-plug behavior.
What is the purpose of the "Q1" suffix in CD74HC125QM96Q1?
"Q1" denotes AEC-Q100 qualification per automotive reliability standards. Specifically, CD74HC125QM96Q1 is certified to Grade 1 (–40°C to +125°C ambient), with additional stress testing including HTOL, temperature cycling, and ESD per AEC-Q100-002 and -011. This suffix distinguishes it from commercial-grade variants like CD74HC125M96 and confirms suitability for automotive production use. The "Q1" is part of the official TI orderable number for the CD74HC125QM96Q1.
Can the CD74HC125QM96Q1 be used with a 2.5 V supply voltage?
Yes, the CD74HC125QM96Q1 supports 2 V to 6 V operation, so 2.5 V is within its recommended range. At 2.5 V, VOH is guaranteed ≥2.4 V (IOH = –20 µA), VOL ≤0.1 V (IOL = 20 µA), and propagation delay increases to ≤150 ns (CL = 50 pF). Input thresholds scale proportionally (VIH ≈ 1.7 V, VIL ≈ 0.7 V). System-level validation is advised for timing-critical 2.5 V interfaces, but the CD74HC125QM96Q1 electrical characteristics fully cover this voltage.
CD74HC125QM96Q1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
CD74HC125QM96Q1 FAQ
1.How can I place an order for CD74HC125QM96Q1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC125QM96Q1 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 CD74HC125QM96Q1 reliable?
The price and inventory of CD74HC125QM96Q1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC125QM96Q1 is usually 5 days.
3.What payment methods are accepted for CD74HC125QM96Q1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC125QM96Q1 transactions.
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4.How is shipping managed for CD74HC125QM96Q1?
CD74HC125QM96Q1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC125QM96Q1 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 CD74HC125QM96Q1?
For technical support, including CD74HC125QM96Q1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC125QM96Q1 requirements.
6.How does Aetrix verify that CD74HC125QM96Q1 is sourced from the original manufacturer or authorized distributors?
All CD74HC125QM96Q1 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 CD74HC125QM96Q1 meets industry standards.
7.What is the process for return or replacement of CD74HC125QM96Q1?
All CD74HC125QM96Q1 units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC125QM96Q1, 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 CD74HC125QM96Q1 part is unused and in its original packaging.
Return procedure for CD74HC125QM96Q1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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