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SN74AHC540PWRG4 Datasheet(PDF) 5 Page - Texas Instruments |
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SN74AHC540PWRG4 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 27 page SN54AHC540, SN74AHC540 www.ti.com SCLS260L – DECEMBER 1995 – REVISED OCTOBER 2015 6.4 Thermal Information SN74AHC540 DB DGV DW N NS PW THERMAL METRIC(1) UNIT (SSOP) (TVSOP) (SOIC) (PDIP) (PDIP) (TSSOP) 20 PINS 20 PINS 20 PINS 20 PINS 20 PINS 20 PINS RθJA Junction-to-ambient thermal resistance 99.9 119.2 83.0 54.9 80.4 105.4 °C/W RθJC(top) Junction-to-case (top) thermal resistance 61.7 34.5 48.9 41.7 46.9 39.5 °C/W RθJB Junction-to-board thermal resistance 55.2 60.7 50.5 35.8 47.9 56.4 °C/W Junction-to-top characterization ψJT 22.6 1.2 21.1 27.9 19.9 3.1 °C/W parameter Junction-to-board characterization ψJB 54.8 60.0 50.1 35.7 47.5 55.8 °C/W parameter (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report (SPRA953). 6.5 Electrical Characteristics over operating free-air temperature range (unless otherwise noted) –40°C to 125°C TA = 25°C SN54AHC540 SN74AHC540 SN74AHC540 PARAMETER TEST CONDITIONS VCC UNIT MIN TYP MAX MIN MAX MIN MAX MIN MAX 2 V 1.9 2 1.9 1.9 1.9 IOH = –50 µA 3 V 2.9 3 2.9 2.9 2.9 VOH 4.5 V 4.4 4.5 4.4 4.4 4.4 V IOH = –4 mA 3 V 2.58 2.48 2.48 2.48 IOH = –8 mA 4.5 V 3.94 3.8 3.8 3.8 2 V 0.1 0.1 0.1 0.1 IOL = 50 µA 3 V 0.1 0.1 0.1 0.1 VOL 4.5 V 0.1 0.1 0.1 0.1 V IOH = 4 mA 3 V 0.36 0.5 0.44 0.44 IOH = 8 mA 4.5 V 0.36 0.5 0.44 0.44 0 V to 5.5 II VI = 5.5 V or GND ±0.1 ±1(1) ±1 ±1 µA V VO = VCC or GND ±0.2 IOZ (2) 5.5 V ±2.5 ±2.5 ±2.5 µA VI (OE) = VIL or VIH 5 VI = VCC or IO = ICC 5.5 V 4 40 40 40 µA GND 0 Ci VI = VCC or GND 5 V 2 10 10 pF CO VO = VCC or GND 5 V 4 pF (1) On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V. (2) For input and output pins, IOZ includes the input leakage current. Copyright © 1995–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: SN54AHC540 SN74AHC540 |
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