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ZHCSOD2E December 1982 – June 2021 SN54HC27 , SN74HC27

PRODUCTION DATA

请参考 PDF 数据表获取器件具体的封装图。

6.3 Thermal Information

THERMAL METRIC⁽¹⁾		SN74HC27				UNIT
		D (SOIC)	DB (SSOP)	N (PDIP)	NS (SOP)
		14 PINS	14 PINS	14 PINS	14 PINS
R_θJA	Junction-to-ambient thermal resistance	133.6	111.8	67.3	122.6	°C/W
R_θJC(top)	Junction-to-case (top) thermal resistance	89.0	61.6	55.3	81.8	°C/W
R_θJB	Junction-to-board thermal resistance	89.5	62.0	47.0	83.8	°C/W
Ψ_JT	Junction-to-top characterization parameter	45.5	21.1	35.4	45.4	°C/W
Ψ_JB	Junction-to-board characterization parameter	89.1	61.3	46.8	83.4	°C/W
R_θJC(bot)	Junction-to-case (bottom) thermal resistance	N/A	N/A	N/A	N/A	°C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.