Original Part
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-SSOP
Alternative Part
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
1. 74FCT162H245ATPACT Substitution Conclusion
As a direct replacement, functional equivalence is achievable, but careful verification of the "H" series performance and package compatibility is required. Core functional parameters (logic type, bit width, supply voltage, drive strength) are fully matched. The differences are as follows: First, the "H" designation in the part number typically indicates enhanced AC performance (e.g., faster edge rates or shorter propagation delays), which may lead to discrepancies in system timing or signal integrity compared to the original design and must be validated within the target circuit. Second, the package has changed from a 48-BSSOP (7.50mm wide) to a 48-TSSOP (6.10mm wide). Although the pinout is identical, the narrower package body necessitates re-evaluation or confirmation of compatibility for pad dimensions and PCB layout.
2. 74FCT162H245CTPACT Substitution Conclusion
As a direct replacement, this substitution carries clear risks and is generally not recommended. The primary obstacle is the operating temperature range. Beyond the "H" series performance variations and TSSOP package differences shared with the "ATPACT" variant, the key distinction lies in the suffix. The "C" typically denotes a commercial temperature range (e.g., 0°C to +70°C), whereas the original part and the "ATPACT" variant with the "A" suffix are typically specified for an industrial temperature range (-40°C to +85°C). In environments with wider or lower temperature extremes, the "CTPACT" may fail to meet reliability requirements. This constitutes a critical downgrade replacement, suitable only for applications definitively confined within the commercial temperature range.
Analysis ID: C84F-A5FA000
Based on part parameters and for reference only. Not to be used for procurement or production.
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