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SN74HC244 Datasheet(PDF) 5 Page - Texas Instruments |
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SN74HC244 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 32 page 5 SN54HC244, SN74HC244 www.ti.com SCLS130E – DECEMBER 1982 – REVISED MAY 2016 Product Folder Links: SN54HC244 SN74HC244 Submit Documentation Feedback Copyright © 1982–2016, Texas Instruments Incorporated (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. 6.4 Thermal Information THERMAL METRIC(1) SN54HC244, SN74HC244 UNIT DB (SSOP) DW (SOIC) N (PDIP) NS (SOP) PW (TSSOP) 20 PINS 20 PINS 20 PINS 20 PINS 20 PINS RθJA Junction-to-ambient thermal resistance 89.5 76.8 44.9 71.9 97.5 °C/W RθJC(top) Junction-to-case (top) thermal resistance 50.9 42.2 30.9 38.2 32.6 °C/W RθJB Junction-to-board thermal resistance 44.6 44.6 25.8 39.3 48.4 °C/W ψJT Junction-to-top characterization parameter 17 15.6 16.4 14.9 1.7 °C/W ψJB Junction-to-board characterization parameter 44.2 44.1 25.7 39 47.9 °C/W 6.5 Electrical Characteristics TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOH VI = VIH or VIL IOH = –20 µA VCC = 2 V 1.9 1.998 V VCC = 4.5 V 4.4 4.499 VCC = 6 V 5.9 5.999 IOH = –6 mA, VCC = 4.5 V 3.98 4.3 IOH = –7.8 mA, VCC = 6 V 5.48 5.8 VOL VI = VIH or VIL IOL = 20 µA VCC = 2 V 0.002 0.1 V VCC = 4.5 V 0.001 0.1 VCC = 6 V 0.001 0.1 IOL = 6 mA, VCC = 4.5 V 0.17 0.26 IOL = 7.8 mA, VCC = 6 V 0.15 0.26 II VI = VCC or 0, VCC = 6 V ±0.1 ±100 nA IOZ VO = VCC or 0, VI = VIH or VIL, VCC = 6 V ±0.01 ±0.5 µA ICC VI = VCC or 0, IO = 0, VCC = 6 V 8 µA Ci VCC = 2 V to 6 V 3 10 pF 6.6 Electrical Characteristics – SN54HC244 over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOH VI = VIH or VIL IOH = –20 µA VCC = 2 V 1.9 V VCC = 4.5 V 4.4 VCC = 6 V 5.9 IOH = –6 mA, VCC = 4.5 V 3.7 IOH = –7.8 mA, VCC = 6 V 5.2 VOL VI = VIH or VIL IOL = 20 µA VCC = 2 V 0.1 V VCC = 4.5 V 0.1 VCC = 6 V 0.1 IOL = 6 mA, VCC = 4.5 V 0.4 IOL = 7.8 mA, VCC = 6 V 0.4 II VI = VCC or 0, VCC = 6 V ±1000 nA IOZ VO = VCC or 0, VI = VIH or VIL, VCC = 6 V ±10 µA ICC VI = VCC or 0, IO = 0, VCC = 6 V 160 µA Ci VCC = 2 V to 6 V 10 pF |
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