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SN74ABT646DWRE4 bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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SN74ABT646DWRE4 bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 16 page SN54ABT646, SN74ABT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS SCBS068E – JULY 1991 – REVISED JULY 1994 2–5 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 (except I/O ports) (see Note 1) – 0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range applied to any output in the high state or power-off state, VO – 0.5 V to 5.5 V . . . . . . . . . . . . . Current into any output in the low state, IO: SN54ABT646 96 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74ABT646 128 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK (VI < 0) –18 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output clamp current, IOK (VO < 0) – 50 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum power dissipation at TA = 55°C (in still air) (see Note 2): DB package 0.65 W . . . . . . . . . . . . . . . . . . . DW package 1.7 W . . . . . . . . . . . . . . . . . . . NT package 1.3 W . . . . . . . . . . . . . . . . . . . . PW package 0.7 W . . . . . . . . . . . . . . . . . . . Storage temperature range – 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 maximum package power dissipation is calculated using a junction temperature of 150 °C and a board trace length of 750 mils, except for the NT package, which has a trace length of zero. For more information, refer to the Package Thermal Considerations application note in the 1994 ABT Advanced BiCMOS Technology Data Book, literature number SCBD002B. recommended operating conditions (see Note 3) SN54ABT646 SN74ABT646 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 5 5 ns / V TA Operating free-air temperature –55 125 –40 85 °C NOTE 3: Unused or floating pins (input or I/O) must be held high or low. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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