74F244PC Equivalent & Substitute Parts

Part Overview

The 74F244PC is a non-inverting buffer IC manufactured by onsemi, designed for logic signal buffering applications. This device features 2 elements with 4 bits per element and 3-state output capability, operating within a 4.5V to 5.5V supply voltage range. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

74F244PC

onsemiIn Stock: 1941774F244PC Datasheet

Current PartRFQ

SN74F244N

Texas InstrumentsIn Stock: 50291SN74F244N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F244PC is determined by strict equivalence across the following critical parameters:

• Logic function: Non-inverting buffer configuration
• Element and bit architecture: 2 elements × 4 bits per element
• Output control: 3-state output capability
• Supply voltage range: 4.5V to 5.5V compatibility
• Package form factor: 20-DIP through-hole mounting
• Operating temperature range: 0°C to 70°C

The SN74F244N from Texas Instruments meets all these criteria, maintaining functional and pin-level compatibility with the 74F244PC despite differences in output current specifications and product status.

Parameter Comparison

Engineering Selection Recommendations

The SN74F244N serves as the direct functional equivalent for the obsolete 74F244PC. Both devices share identical logic architecture, pin configuration, and electrical operating parameters within the specified supply voltage and temperature ranges. The SN74F244N is currently in active production status, ensuring availability for replacement and new applications.

The output high current specification differs between the two parts (3mA versus 15mA), which represents an improvement in the Texas Instruments device. This higher output current capability does not create incompatibility; it provides enhanced drive capability for downstream logic circuits.

The SN74F244N carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements for component procurement and system integration.

Frequently Asked Questions (FAQ)

Q: Can the SN74F244N directly replace the 74F244PC in existing designs?

A: Yes. Both devices are pin-compatible 20-DIP packages with identical logic function, element count, bit configuration, and 3-state output architecture. Supply voltage and operating temperature ranges are equivalent.

Q: What is the significance of the output current difference between these parts?

A: The SN74F244N provides 15mA output high current compared to the 74F244PC's 3mA. This represents increased drive capability and does not create functional incompatibility. Circuits designed for the lower current specification will operate correctly with the higher-current device.

Q: Why is the 74F244PC classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by onsemi. The SN74F244N from Texas Instruments provides continued access to this logic function in an active production part.

Q: Are there package or mounting considerations for substitution?

A: Both parts use identical 20-DIP through-hole packaging with 0.300" (7.62mm) spacing. No PCB layout or mounting modifications are required for substitution.

Q: Does the ROHS3 compliance of the SN74F244N affect compatibility?

A: No. ROHS3 compliance indicates the SN74F244N meets environmental standards for hazardous substance restrictions. This certification does not alter electrical function or pin compatibility.