A6273KA Equivalent & Substitute Parts

Part Overview

The A6273KA is an Allegro MicroSystems power management IC designed as a PWR DRIVER N-CHAN 1:1 in a 20-DIP package. This latched driver features 8 outputs with N-channel configuration, rated for 50V maximum load voltage and 250mA output current per channel. The device operates across the industrial temperature range of -40°C to 125°C and is designed for applications requiring low-side switching control with parallel strobe interface.

The A6273KA is classified as obsolete. Locating equivalent or substitute components is necessary to support legacy system maintenance, board redesigns, or production continuity when original inventory becomes unavailable.

Substiute Parts

A6273KA

Allegro MicroSystemsIn Stock: 1098A6273KA Datasheet

Current PartRFQ

TPIC6273N

Texas InstrumentsIn Stock: 1124TPIC6273N Datasheet

DirectRFQ

TPIC6B273N

Texas InstrumentsIn Stock: 6077TPIC6B273N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the A6273KA is based on the following critical parameters that must align across candidate parts:

• Package compatibility: 20-DIP (0.300", 7.62mm) through-hole mounting
• Output configuration: 8-output, low-side switching topology
• Supply voltage range: 4.5V ~ 5.5V operation
• Operating temperature range: -40°C ~ 125°C
• Interface type: Parallel control with strobe capability
• Load voltage rating: Minimum 50V capability

The substitute parts identified—TPIC6273N and TPIC6B273N from Texas Instruments—share the identical 20-DIP package footprint, 8-output configuration, supply voltage specification, and operating temperature range. Both devices are manufactured as D-type latch logic ICs with 8:8 circuit configuration, providing functional equivalence for latched output control applications. These parts are currently in active production status with RoHS3 compliance, addressing the obsolescence of the original A6273KA.

Parameter Comparison

Engineering Selection Recommendations

Both TPIC6273N and TPIC6B273N are suitable substitutes for the obsolete A6273KA based on package compatibility, electrical specifications, and operating conditions. Selection between the two Texas Instruments alternatives depends on timing requirements:

TPIC6273N provides a propagation delay of 625ns and represents a direct functional equivalent with transparent latch operation. This part is appropriate for applications where the original A6273KA timing characteristics are acceptable.

TPIC6B273N offers improved performance with a propagation delay of 150ns, providing faster response in latched output control. This part is recommended as the primary substitute due to its superior timing performance and higher inventory availability (6022 units in stock versus 1103 units for TPIC6273N).

Both substitute parts carry ROHS3 compliance certification, addressing regulatory requirements that may supersede the non-compliant status of the original A6273KA. Pin-to-pin compatibility with the 20-DIP package ensures direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can TPIC6273N and TPIC6B273N be used interchangeably with A6273KA?

A: Both Texas Instruments parts are pin-compatible substitutes in the 20-DIP package. The primary difference is propagation delay: TPIC6273N at 625ns and TPIC6B273N at 150ns. Verify that your application timing requirements are met by the selected substitute before implementation.

Q: What is the difference between TPIC6273N and TPIC6B273N?

A: Both devices provide 8-output latched control in identical 20-DIP packages with matching supply voltage (4.5V ~ 5.5V) and operating temperature ranges (-40°C ~ 125°C). The TPIC6B273N features faster propagation delay (150ns versus 625ns), making it suitable for timing-critical applications. TPIC6B273N is recommended as the primary choice due to performance and availability.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both TPIC6273N and TPIC6B273N carry ROHS3 compliance certification. The original A6273KA is RoHS non-compliant. If your application or supply chain requires RoHS compliance, the Texas Instruments substitutes satisfy this requirement.

Q: Will the substitutes work in existing PCB layouts designed for A6273KA?

A: Yes. Both TPIC6273N and TPIC6B273N use the standard 20-DIP (0.300", 7.62mm) package with identical pin assignments for through-hole mounting. No PCB layout modifications are required for direct substitution.

Q: What is the inventory status of these substitutes?

A: TPIC6B273N has 6022 units in stock (recommended primary choice). TPIC6273N has 1103 units in stock. Both are active production parts from Texas Instruments with ongoing availability.