PI49FCT32803LEX Equivalent & Substitute Parts

Part Overview

The PI49FCT32803LEX is an active Clock/Timing fanout buffer (distribution) IC manufactured by Diodes Incorporated. This 1:7 clock buffer operates at a maximum frequency of 133 MHz and is designed for CMOS and TTL input/output compatibility. The device is housed in a 16-TSSOP surface mount package and maintains an operating temperature range of -40°C to 85°C with a supply voltage of 2.97V to 3.63V. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when design requirements allow for reduced output fanout ratios while maintaining core electrical and mechanical compatibility.

Substiute Parts

PI49FCT32803LEX

Diodes IncorporatedIn Stock: 7748PI49FCT32803LEX Datasheet

Current PartRFQ

PI49FCT32802LEX

Diodes IncorporatedIn Stock: 1752PI49FCT32802LEX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PI49FCT32803LEX is permissible when the following conditions are met:

The substitute part must maintain identical electrical characteristics across the following parameters: maximum frequency (133 MHz), input/output signal type (CMOS/TTL), supply voltage range (2.97V ~ 3.63V), operating temperature range (-40°C ~ 85°C), and physical package specification (16-TSSOP surface mount).

The PI49FCT32802LEX qualifies as a parametric equivalent substitute when circuit design allows for a reduced output fanout ratio. The PI49FCT32802LEX provides a 1:5 output configuration instead of the 1:7 configuration of the PI49FCT32803LEX. All other electrical and mechanical parameters remain identical, including frequency response, voltage specifications, temperature range, and package form factor.

Substitution is valid only when the application requires five or fewer clock distribution outputs. If seven outputs are required, the PI49FCT32803LEX must be used.

Parameter Comparison

Engineering Selection Recommendations

Both the PI49FCT32803LEX and PI49FCT32802LEX are active production devices with identical compliance certifications (ROHS3, REACH Unaffected, EAR99 classification). Selection between these parts is determined solely by the required number of clock distribution outputs in the circuit design.

The PI49FCT32803LEX is the primary selection when seven clock outputs are required. The PI49FCT32802LEX serves as a direct substitute only when the circuit design accommodates five or fewer clock outputs. Both devices share identical electrical performance characteristics, thermal specifications, and package footprints, ensuring pin-compatible board layouts when output count requirements permit substitution.

Frequently Asked Questions (FAQ)

Q: Can the PI49FCT32802LEX replace the PI49FCT32803LEX in all applications?

A: No. The PI49FCT32802LEX provides only five outputs compared to the seven outputs of the PI49FCT32803LEX. Substitution is valid only when the circuit design requires five or fewer clock distribution outputs.

Q: Are the package footprints identical between these parts?

A: Yes. Both parts use the 16-TSSOP (0.173", 4.40mm Width) surface mount package. PCB layouts are compatible without modification.

Q: Do these parts have identical electrical performance?

A: Yes. Both parts operate at 133 MHz maximum frequency, support CMOS and TTL input/output, maintain the same supply voltage range (2.97V ~ 3.63V), and operate across the same temperature range (-40°C ~ 85°C).

Q: What is the difference between these substitute parts?

A: The only functional difference is the output fanout ratio. The PI49FCT32803LEX provides 1:7 fanout, while the PI49FCT32802LEX provides 1:5 fanout. All other specifications are identical.

Q: Are both parts currently available?

A: Yes. Both parts maintain active production status with current inventory availability.

Q: Do compliance certifications differ between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry the same EAR99 export classification.