SN74HCS125QBQARQ1: Quad Buffer Gate with 3-State Outputs

The SN74HCS125QBQARQ1 from Texas Instruments is a high-performance, quadruple buffer gate that features 3-state outputs and is designed specifically for driving highly capacitive or relatively low-impedance loads. This integrated circuit is part of the advanced high-speed CMOS family and is fabricated with silicon gate CMOS technology to achieve operating speeds similar to LSTTL gates with the low power consumption of standard CMOS integrated circuits.

This device is optimized for use in automotive applications and is fully compliant with the demanding automotive industry requirements. Its robust design ensures reliable operation in the challenging conditions often found in automotive environments. The SN74HCS125QBQARQ1 is characterized for operation from -40°C to 125°C, making it suitable for various applications that require a wide operating temperature range.

Each of the four independent buffers has a 3-state output stage. The 3-state outputs allow the device to be used in bus-oriented applications. The output state is controlled by an output enable (OE) input for each gate. When OE is low, the output is in the active state; when OE is high, the output is in the high-impedance state. This feature allows the designer to implement complex signal routing and sharing on a common bus without risking bus contention.

The device is housed in a compact, automotive-grade package that is designed to save space on printed circuit boards. It also features inputs and outputs on opposite sides of the package to facilitate easier routing of PCB traces. This makes the SN74HCS125QBQARQ1 an excellent choice for space-constrained automotive applications.

Key features of the SN74HCS125QBQARQ1 include:

• 3-state outputs drive bus lines or buffer memory address registers
• Operating voltage range of 2 V to 6 V
• Maximum output current of ±8 mA at 5 V
• ESD protection exceeds JESD 22
• Inputs accept voltages up to 5.5 V
• Low power consumption, ICC of 20 µA max at TA = 25°C
• Latch-up performance exceeds 100 mA per JESDG 78, Class II

Overall, the SN74HCS125QBQARQ1 is a versatile and reliable choice for automotive and other high-reliability applications where a quad buffer with 3-state outputs is required.