A6B595KA Equivalent & Substitute Parts

Part Overview

The A6B595KA is an 18-DIP power switch/driver IC manufactured by Allegro MicroSystems, designed for 1:8 N-Channel low-side switching applications with 150mA output current capability. This component operates within a 4.5V to 5.5V supply voltage range and supports strobe and serial interface control. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

A6B595KA

Allegro MicroSystemsIn Stock: 2099A6B595KA Datasheet

Current PartRFQ

TPIC6B595N

Texas InstrumentsIn Stock: 26716TPIC6B595N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The TPIC6B595N from Texas Instruments qualifies as a functional equivalent based on the following critical parameters:

Matching Criteria:

• 8-bit output configuration (1:8 input-to-output ratio equivalent)
• Serial interface capability for control signal transmission
• 4.5V to 5.5V supply voltage compatibility
• Through-hole mounting technology (DIP package family)
• Open-drain output type compatible with N-channel switching applications
• Low-side driver functionality

Substitution Logic: The TPIC6B595N operates as a shift register with 8-bit parallel output capability, providing the same 1:8 expansion ratio as the A6B595KA. Both devices accept serial input data and convert it to parallel outputs suitable for driving external loads. The supply voltage range is identical, ensuring direct compatibility in existing power distribution networks. Package family alignment (DIP technology) permits direct socket replacement in through-hole PCB designs.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The A6B595KA is classified as obsolete, while the TPIC6B595N maintains active production status with 26,700 units in current inventory. This availability differential is significant for long-term supply chain planning and design continuity.

Compliance Alignment: The TPIC6B595N achieves ROHS3 compliance, whereas the A6B595KA is RoHS non-compliant. Organizations operating under RoHS regulatory requirements must account for this distinction when selecting components for new designs or system upgrades.

Package Consideration: The TPIC6B595N utilizes a 20-DIP package compared to the A6B595KA's 18-DIP package. Both maintain 0.300" (7.62mm) pitch spacing and through-hole mounting technology. PCB layout modifications may be required to accommodate the additional two pins, necessitating design review prior to implementation.

Temperature Operating Range: The TPIC6B595N supports -40°C to 125°C operation, extending 40°C above the A6B595KA's maximum rating of 85°C. This expanded range provides additional thermal margin for applications operating in elevated ambient conditions.

Frequently Asked Questions (FAQ)

Q: Can the TPIC6B595N directly replace the A6B595KA without PCB modification?

A: Direct socket replacement is not possible due to package pin count differences (20-DIP versus 18-DIP). PCB layout redesign is required to accommodate the additional pins. Pin function mapping must be verified against device datasheets before implementation.

Q: What is the primary functional difference between these devices?

A: The A6B595KA is a dedicated power driver IC, while the TPIC6B595N is a shift register with open-drain outputs. Both provide 8-bit parallel output expansion from serial input, but the TPIC6B595N requires external load-switching circuitry for power management applications.

Q: Are the supply voltage requirements identical?

A: Yes. Both devices operate within the 4.5V to 5.5V supply voltage range, permitting direct compatibility in existing power distribution designs.

Q: Does the TPIC6B595N meet current RoHS requirements?

A: Yes. The TPIC6B595N is ROHS3 compliant, suitable for applications requiring RoHS certification. The A6B595KA is RoHS non-compliant and may not meet current regulatory requirements for new product designs.

Q: What is the impact of the extended operating temperature range on the TPIC6B595N?

A: The TPIC6B595N supports operation to 125°C, compared to the A6B595KA's 85°C maximum. This 40°C extension provides additional thermal margin for high-temperature environments but does not affect electrical performance within the overlapping temperature range.

Q: How should pin mapping be handled during substitution?

A: Detailed pin-to-pin comparison using manufacturer datasheets is mandatory. The 20-DIP package of the TPIC6B595N contains additional pins not present in the 18-DIP A6B595KA. Functional signal mapping must be verified to ensure correct circuit operation.