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SN74ALS561A Datasheet(PDF) 5 Page - Texas Instruments |
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SN74ALS561A Datasheet(HTML) 5 Page - Texas Instruments |
5 / 13 page SN54ALS561A, SN74ALS561A SYNCHRONOUS 4-BIT COUNTERS WITH 3-STATE OUTPUTS SDAS225A – DECEMBER 1982 – REVISED JANUARY 1995 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA: SN54ALS561A – 55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74ALS561A 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. recommended operating conditions SN54ALS561A SN74ALS561A 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 VIL Low-level input voltage 0.7 0.8 V IOH High level output current Q outputs –1 – 2.6 mA IOH High-level output current CCO and RCO – 0.4 – 0.4 mA IOL Low level output current Q outputs 12 24 mA IOL Low-level output current CCO and RCO 4 8 mA fclock Clock frequency 0 20 0 30 MHz ACLR or ALOAD low 20 15 tw Pulse duration CLK high 20 16.5 ns CLK low 25 16.5 ↑ ENP ENT High 25 20 ↑ ENP, ENT Low 25 20 ↑ Data at A, B, C, D 25 20 t Setup time before CLK ↑ SCLR Low 21 15 ns tsu Setup time before CLK ↑ SCLR High (inactive) 35 30 ns SLOAD Low 20 15 SLOAD High (inactive) 35 30 ACLR or ALOAD inactive 12 10 th Hold time after CLK ↑ for data, ENP, ENT, SCLR, or SLOAD 0 0 ns TA Operating free-air temperature –55 125 0 70 °C |
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