PI74FCT244TLE Equivalent & Substitute Parts

Part Overview

The PI74FCT244TLE is a non-inverting buffer logic IC manufactured by Diodes Incorporated, designed for 5V CMOS applications. This component features 2 elements with 4 bits per element and 3-state output capability in a 20-TSSOP surface mount package. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

PI74FCT244TLE

Diodes IncorporatedIn Stock: 2187PI74FCT244TLE Datasheet

Current PartRFQ

74FCT244ATQG

IDT, Integrated Device Technology IncIn Stock: 240074FCT244ATQG Datasheet

MFR RecommendedRFQ

74FCT244CTQG

IDT, Integrated Device Technology IncIn Stock: 865474FCT244CTQG Datasheet

MFR RecommendedRFQ

CY74FCT2244ATQCT

Texas InstrumentsIn Stock: 5061CY74FCT2244ATQCT Datasheet

MFR RecommendedRFQ

CY74FCT2244CTQCT

Texas InstrumentsIn Stock: 1304CY74FCT2244CTQCT Datasheet

MFR RecommendedRFQ

CY74FCT2244TQCT

Texas InstrumentsIn Stock: 3190CY74FCT2244TQCT Datasheet

MFR RecommendedRFQ

CY74FCT244ATQCT

Texas InstrumentsIn Stock: 2067CY74FCT244ATQCT Datasheet

MFR RecommendedRFQ

CY74FCT244CTQCT

Texas InstrumentsIn Stock: 4122CY74FCT244CTQCT Datasheet

MFR RecommendedRFQ

CY74FCT244TQCT

Texas InstrumentsIn Stock: 1905CY74FCT244TQCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI74FCT244TLE are selected based on strict electrical and mechanical compatibility criteria. The following parameters determine valid substitution:

Core Electrical Parameters:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 2
• Number of Bits per Element: 4
• Output Type: 3-State
• Voltage - Supply: 4.75V ~ 5.25V
• Operating Temperature: -40°C ~ 85°C (TA)
• Series: 74FCT

Mechanical Parameters:

• Mounting Type: Surface Mount
• Package compatibility: 20-pin configurations (TSSOP, SSOP, QSOP)

Compliance Parameters:

• RoHS3 Compliant
• REACH Unaffected
• ECCN: EAR99

Substitute parts are grouped into two categories based on output current specifications and package form factor variations. All listed substitutes maintain electrical equivalence within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status with manufacturers, ensuring long-term availability and supply chain stability. The PI74FCT244TLE obsolescence necessitates migration to one of the active alternatives.

IDT 74FCT244 Series (74FCT244ATQG, 74FCT244CTQG): These parts provide direct electrical equivalence with output current specifications matching the original PI74FCT244TLE (15mA high, 64mA low). Both parts are manufactured by Integrated Device Technology Inc and carry active product status. Package form factor is 20-SSOP, which differs from the original 20-TSSOP but maintains surface mount compatibility.

Texas Instruments CY74FCT244 Series (CY74FCT244ATQCT, CY74FCT244CTQCT, CY74FCT244TQCT): These parts feature higher output current capability (32mA high, 64mA low) compared to the original specification. All three variants are active products available in 20-SSOP packaging with Cut Tape (CT) or Tape & Reel (TR) options. These parts are suitable for applications requiring enhanced drive capability.

Texas Instruments CY74FCT2244 Series (CY74FCT2244ATQCT, CY74FCT2244CTQCT, CY74FCT2244TQCT): These parts feature reduced output current on the low side (15mA high, 12mA low) and are available in 20-SSOP packaging. All variants carry active product status with Tape & Reel or Cut Tape packaging options.

All substitute parts comply with RoHS3 requirements and REACH regulations. Selection should be based on output current requirements, packaging preference (Cut Tape vs. Tape & Reel), and manufacturer availability in your supply chain.

Frequently Asked Questions (FAQ)

Q: Can I directly replace PI74FCT244TLE with any of the listed substitutes?

A: Yes, all listed parts maintain electrical equivalence in logic function, element count, bit configuration, output type, supply voltage range, and operating temperature. However, package form factor differs: the original uses 20-TSSOP while substitutes use 20-SSOP or 20-QSOP. PCB layout modifications may be required to accommodate the different pin pitch and body dimensions.

Q: What is the difference between the IDT and Texas Instruments substitutes?

A: IDT parts (74FCT244ATQG, 74FCT244CTQG) provide output current specifications identical to the original (15mA high, 64mA low). Texas Instruments CY74FCT244 variants offer higher output current (32mA high, 64mA low), while CY74FCT2244 variants feature lower output current on the low side (15mA high, 12mA low). Selection depends on your circuit's current drive requirements.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all listed substitute parts are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What packaging options are available?

A: IDT parts are available in bulk packaging. Texas Instruments parts are available in Cut Tape (CT) or Tape & Reel (TR) configurations. All use 20-pin surface mount packages (SSOP or QSOP form factors).

Q: Does the package change from TSSOP to SSOP affect functionality?

A: No. Both TSSOP and SSOP are 20-pin surface mount packages with identical electrical functionality. The primary difference is physical dimensions and pin pitch. SSOP has a narrower body width (0.154" vs. 0.173") and different pin spacing, requiring PCB layout adjustment but maintaining full electrical compatibility.

Q: Which substitute should I choose for new designs?

A: For new designs, select from the active product status parts based on your specific output current requirements and preferred packaging format. IDT 74FCT244 series provides direct current specification matching. Texas Instruments CY74FCT244 series offers enhanced drive capability. All are suitable for production use.