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SN74LS244N 数据表(PDF) 6 Page - Texas Instruments |
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SN74LS244N 数据表(HTML) 6 Page - Texas Instruments |
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6 / 31 page  SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244 SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SDLS144C − APRIL 1985 − REVISED MAY 2010 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI: ’LS 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ’S 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Off-state output voltage 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): DB package 70 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DW package 58 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N package 69 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NS package 60 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. Voltage values are with respect to network ground terminal. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions SN54LS’ SN74LS’ UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage (see Note 1) 4.5 5 5.5 4.75 5 5.25 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.7 0.8 V IOH High-level output current −12 −15 mA IOL Low-level output current 12 24 mA TA Operating free-air temperature −55 125 0 70 °C NOTE 1: Voltage values are with respect to network ground terminal. |
类似零件编号 - SN74LS244N |
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类似说明 - SN74LS244N |
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