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SN28837 Datasheet(PDF) 6 Page - Texas Instruments |
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SN28837 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 18 page SN28837 1/2-INCH PAL TIMER SOCS031B – JULY 1991 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VDD (see Note 1) – 0.3 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range, VI – 0.3 V to VDD + 0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output voltage range, VO – 0.3 V to VDD + 0.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous total power dissipation at (or below) TA = 25°C 300 mW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA –20 °C to 45°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, TSTG –55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 in) from case for 10 seconds 260 °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. NOTE 1: All voltage values are with respect to GND. recommended operating conditions MIN NOM MAX UNIT Supply voltage, VDD 4.5 5 5.5 V High-level input voltage, VIH VDD x 0.7 V Low-level input voltage, VIL 0.8 V Operating frequency 13.375 MHz Power-up time 300 µs Operating free-air temperature, TA –20 45 °C electrical characteristics over recommended operating ranges of supply voltage and free-air temperature (unless otherwise noted) ‡ PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VOH GT3/SH2 and GT1/SH3 VDD = 4.5 V, IOH = – 4 mA 3.5 V VOH All other outputs VDD = 4.5 V, IOH = – 2 mA 3.5 V VOL GT3/SH2 and GT1/SH3 VDD = 4.5 V, IOL = 4 mA 0.5 V VOL All other outputs VDD = 4.5 V, IOL = 2 mA 0.5 V IIH§ VIH = 5 V 1 µA IIL VIL = 0 –30 – 200 – 500 µA IDD(AV) Average supply current 10 30 mA IDD(S) Standby supply current 1 mA ‡ The HCR, SB, and VCR inputs are Schmitt-trigger inputs with 0.1-V to 1-V hysteresis. § All inputs except X1 have pullup-current sources. switching characteristics over recommended operating free-air temperature range, VDD = 5 V PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fclock Frequency S1, S2, S3, SH1, GT2, GT1/SH3, GT3/SH2 CL =50 pF 4.458333 MHz tw Pulse duration S1, S2, S3, SH1, GT2, GT1/SH3, GT3/SH2 CL = 50 pF 75 ns t Rise time GT1/SH3 and GT3/SH2 10 ns tr Rise time All other outputs CL =50 pF 50 ns tf Fall time GT1/SH3 and GT3/SH2 CL = 50 pF 10 ns tf Fall time All other outputs 50 ns |
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