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SN74ALS244B Folha de dados(PDF) 2 Page - Texas Instruments |
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SN74ALS244B Folha de dados(HTML) 2 Page - Texas Instruments |
2 / 6 page SN54ALS244B, SN74ALS244B OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDAS142 – D2661, DECEMBER 1982 – REVISED JULY 1987 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage applied to a disabled 3-state output 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range: SN54ALS244B – 55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74ALS244B 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range – 65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . recommended operating conditions SN54ALS244B SN74ALS244B UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V 0.8 VIL Low-level input voltage 0.8† V IL g 0.7‡ IOH High-level output current –12 –15 mA I Low level output current 12 24 mA IOL Low-level output current 48§ mA TA Operating free-air temperature –55 125 0 70 °C † Tested at – 55 °C to 70°C. ‡ Tested at 70 °C to 125°C, per MIL-STD-883, method 5005, sub-group 1, 2, and 3. Static tests are performed at 25°C, 125°C, and 55°C. § The extended limits apply only if VCC is maintained between 4.75 V and 5.25 V. The 48-mA limit applies for the SN74ALS244B-1 only. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54ALS244B SN74ALS244B UNIT PARAMETER TEST CONDITIONS MIN TYP¶ MAX MIN TYP¶ MAX UNIT VIK VCC = 4.5 V, II = – 18 mA – 1.5 – 1.5 V VCC = 4.5 V to 5.5 V, IOH = – 0.4 mA VCC –2 VCC –2 V VCC = 4.5 V to 5.5 V, IOH = – 3 mA 2.4 3.2 2.4 3.2 V VOH VCC = 4.5 V, IOH = – 12 mA 2 V VCC = 4.5 V, IOH = – 15 mA 2 VCC = 4.5 V, IOL = 12 mA 0.25 0.4 0.25 0.4 VOL VCC = 4.75 V, IOL = 24 mA V OL (IOL = 48 mA for –1 version) IOZH VCC = 5.5 V, VO = 2.7 V 20 20 µA IOZL VCC = 5.5 V, VO = 0.4 V –20 –20 µA II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL VCC = 5.5 V, VI = 0.4 V – 0.1 – 0.1 mA IO# VCC = 5.5 V, VO = 2.25 V –30 –112 –30 –112 mA Outputs high 9 15 9 15 ICC VCC = 5.5 V Outputs low 15 24 15 24 mA Outputs disabled 17 27 17 27 ¶ All typical values are at VCC = 5 V, TA = 25°C. # The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. |
Nº de peça semelhante - SN74ALS244B |
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Descrição semelhante - SN74ALS244B |
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