Overview
The 74HC125D is a high-speed CMOS quad bus buffer integrated circuit produced by Toshiba Semiconductor and Storage. This device is part of the 74HC series, known for its high speed and low power dissipation, making it suitable for a variety of digital logic applications. The 74HC125D features non-inverted 3-state outputs and is fabricated using silicon gate C2MOS technology, which ensures high speed operation similar to LSTTL while maintaining the low power characteristics of CMOS technology.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Operating Voltage Range | 2.0 to 6.0 | V | |
| Propagation Delay (tpd) | 10 ns (typ.) | ns | VCC = 6.0 V |
| Quiescent Supply Current (ICC) | 4.0 µA (max) | µA | Ta = 25 °C |
| High-Level Input Voltage (VIH) | 0.7 * VCC | V | |
| Low-Level Input Voltage (VIL) | 0.3 * VCC | V | |
| High-Level Output Voltage (VOH) | 0.8 * VCC (min) | V | IOH = -20 µA |
| Low-Level Output Voltage (VOL) | 0.2 * VCC (max) | V | IOH = 6 mA |
| Operating Temperature Range | -40 to 125 | °C | |
| Package Type | SOIC14 | ||
| Mounting Type | Surface Mount |
Key Features
- High speed operation: tpd = 10 ns (typ.) at VCC = 6.0 V
- Low power dissipation: ICC = 4.0 µA (max) at Ta = 25 °C
- Balanced propagation delays: tPLH ≈ tPHL
- Wide operating voltage range: VCC(opr) = 2.0 to 6.0 V
- 3-state output control: Output can be placed in a high impedance state
- Protection circuits against static discharge or transient excess voltage
- Lead-free and RoHS compliant
Applications
The 74HC125D is versatile and can be used in various digital logic applications, including:
- Buffering and driving long lines or large capacitive loads
- Level shifting and voltage translation
- General-purpose logic circuits requiring high speed and low power
- Automotive and industrial control systems
- Consumer electronics and communication devices
Q & A
- What is the operating voltage range of the 74HC125D?
The operating voltage range of the 74HC125D is from 2.0 V to 6.0 V.
- What is the typical propagation delay of the 74HC125D?
The typical propagation delay (tpd) is 10 ns at VCC = 6.0 V.
- How does the 3-state output control work on the 74HC125D?
The output can be placed in a high impedance state by setting the control input G high for the 74HC125D.
- What is the package type of the 74HC125D?
The 74HC125D is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) package.
- Is the 74HC125D RoHS compliant?
- What is the operating temperature range of the 74HC125D?
The operating temperature range is from -40 °C to 125 °C.
- What kind of protection does the 74HC125D have against static discharge?
The 74HC125D is equipped with protection circuits against static discharge or transient excess voltage.
- What are some common applications of the 74HC125D?
Common applications include buffering and driving long lines, level shifting, general-purpose logic circuits, automotive and industrial control systems, and consumer electronics.
- How does the 74HC125D achieve balanced propagation delays?
The 74HC125D achieves balanced propagation delays with tPLH ≈ tPHL.
- What is the quiescent supply current of the 74HC125D at room temperature?
The quiescent supply current (ICC) is 4.0 µA (max) at Ta = 25 °C.
