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SN74AHC273PWRG4 数据表(PDF) 5 Page - Texas Instruments |
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SN74AHC273PWRG4 数据表(HTML) 5 Page - Texas Instruments |
5 / 30 page SN54AHC273, SN74AHC273 www.ti.com SCLS376I – JUNE 1997 – REVISED MARCH 2015 7.4 Thermal Information SN74AHC273 THERMAL METRIC(1) N DW NS DB PW DGV UNIT 20 PINS RθJA Junction-to-ambient thermal resistance 53.9 81.8 79.4 98.7 104.7 118.1 Junction-to-case (top) thermal RθJC(top) 38.8 47.8 45.9 60.4 38.8 33.4 resistance RθJB Junction-to-board thermal resistance 34.7 49.4 46.9 56.9 55.7 59.6 Junction-to-top characterization °C/W ψJT 26.9 20.1 19.1 21.6 2.9 1.1 parameter Junction-to-board characterization ψJB 34.7 49.0 46.5 53.5 55.1 58.9 parameter Junction-to-case (bottom) thermal RθJC(bot) n/a n/a n/a n/a n/a n/a resistance (1) For more information about traditional and new thermal metrics, see the TI application report IC Package Thermal Metrics (SPRA953). 7.5 Electrical Characteristics over recommended operating free-air temperature range (unless otherwise noted) TA = 25°C SN54AHC273 SN74AHC273 PARAMETER TEST CONDITIONS VCC UNIT MIN TYP MAX MIN MAX MIN MAX 2 V 1.9 1.9 1.9 IOH = –50 µA 3 V 2.9 2.9 2.9 VOH 4.5 V 4.4 4.4 4.4 V IOH = –4 mA 3 V 2.58 2.48 2.48 IOH = –8 mA 4.5 V 3.94 3.8 3.8 2 V 0.1 0.1 0.1 IOL = 50 µA 3 V 0.1 0.1 0.1 VOL 4.5 V 0.1 0.1 0.1 V IOL = 4 mA 3 V 0.36 0.5 0.44 IOL = 8 mA 4.5 V 0.36 0.5 0.44 0 to 5.5 II VI = 5.5 V or GND ±0.1 ±1(1) ±1 µA V ICC VI = VCC or GND IO = 0 5.5 V 4 40 40 µA Ci VI = VCC or GND 5 V 2.5 10 10 pF (1) On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V. 7.6 Timing Requirements, VCC = 3.3 V ± 0.3 V over recommended operating free-air temperature range (unless otherwise noted) (see Figure 3) SN54AHC273 SN74AHC273 TA = 25°C TA = 25°C UNIT MIN MAX MIN MAX MIN MAX MIN MAX CLR low 5 6 5 6 tw Pulse Duration ns CLK high or low 5 6.5 5 6.5 Data before CLK ↑ 5.5 6.5 5.5 6.5 tsu Setup time ns CLR before CLK ↑ 2.5 2.5 2.5 2.5 th Hold time, data after CLK ↑ 1.5 2 1 1 ns Copyright © 1997–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: SN54AHC273 SN74AHC273 |
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类似说明 - SN74AHC273PWRG4 |
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