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SN74ABT244ADWRG4 Datasheet(PDF) 3 Page - Texas Instruments |
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SN74ABT244ADWRG4 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 35 page SN54ABT244, SN74ABT244A OCTAL BUFFERS/DRIVERS WITH 3STATE OUTPUTS SCBS099J − JANUARY 1991 − REVISED APRIL 2005 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, VI (see Note 1) −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range applied to any output in the high or power-off state, VO −0.5 V to 5.5 V . . . . . . . . . . . . . . . . . . . Current into any output in the low state, IO: SN54ABT244 96 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74ABT244A 128 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK (VI < 0) −18 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output clamp current, IOK (VO < 0) −50 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): DB package 115 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DW package 97 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N package 67 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PW package 128 °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. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51, except for through-hole packages, which use a trace length of zero. recommended operating conditions (see Note 3) SN54ABT244 SN74ABT244A UNIT MIN MAX MIN MAX UNIT VCC Supply voltage 4.5 5.5 4.5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V VI Input voltage 0 VCC 0 VCC V IOH High-level output current −24 −32 mA IOL Low-level output current 48 64 mA ∆t/∆v Input transition rise or fall rate Outputs enabled 5 5 ns/V TA Operating free-air temperature −55 125 −40 85 °C NOTE 3: Unused inputs must be held high or low to prevent them from floating. |
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