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HEF4541B Datasheet(PDF) 7 Page - NXP Semiconductors |
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HEF4541B Datasheet(HTML) 7 Page - NXP Semiconductors |
7 / 8 page January 1995 7 Philips Semiconductors Product specification Programmable timer HEF4541B MSI DC CHARACTERISTICS VSS =0 V Note 1. All inputs at 0 V or VDD; except input AR = input MR = 0 V (power-on reset active). AC CHARACTERISTICS VSS = 0 V; Tamb =25 °C; input transition times ≤ 20 ns Notes 1. where: fi = input frequency (MHz) fo = output frequency (MHz) CL = load capacitance (pF) VDD = supply voltage (V) Ct = timing capacitance (pF) fosc = oscillator frequency (MHz) VDD V VOL V VOH V SYMBOL Tamb (°C) −40 + 25 + 85 MIN. MAX. MIN. TYP. MAX. MIN. MAX. Supply current 5 − 80 − 20 80 − 230 µA power-on reset 10 ID − 750 − 250 600 − 700 µA enabled (note) 15 − 1600 − 500 1300 − 1500 µA Supply voltage for automatic reset initialization (note) VDD −− 8,5 5 −− − V Output current 5 4,6 0,5 − 0,4 −− 0,3 − mA HIGH; CTC,RTC 10 9,5 −IOH 1,4 − 1,2 −− 0,95 − mA 15 13,5 4,8 − 4,0 −− 3,2 − mA 5 2,5 −IOH 1,4 − 1,2 −− 0,95 − mA Output current 5 0,4 0,33 − 0,27 −− 0,20 − mA LOW; CTC,RTC 10 0,5 IOL 1,00 − 0,85 −− 0,68 − mA 15 1,5 3,20 − 2,70 −− 2,30 − mA VDD V TYPICAL FORMULA FOR P ( µW)(1) Dynamic power dissipation 5 1 300 fi + foCLVDD2 per package 10 5 300 fi + foCLVDD2 (P) 15 12 000 fi + foCLVDD2 Total power dissipation 5 1 300 fosc + foCLVDD2 + 2CtVDD2 fosc + 10 VDD when using the 10 5 300 fosc + foCLVDD2 + 2CtVDD2 fosc + 100 VDD on-chip oscillator (P) 15 12 000 fosc + foCLVDD2 + 2CtVDD2 fosc + 400 VDD |
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