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74HCT4060D 데이터시트(PDF) 2 Page - NXP Semiconductors |
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2 / 12 page December 1990 2 Philips Semiconductors Product specification 14-stage binary ripple counter with oscillator 74HC/HCT4060 FEATURES • All active components on chip • RC or crystal oscillator configuration • Output capability: standard (except for RTC and CTC) • ICC category: MSI GENERAL DESCRIPTION The 74HC/HCT4060 are high-speed Si-gate CMOS devices and are pin compatible with “4060” of the “4000B” series. They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT4060 are 14-stage ripple-carry counter/dividers and oscillators with three oscillator terminals (RS, RTC and CTC), ten buffered outputs (Q3 to Q9 and Q11 to Q13) and an overriding asynchronous master reset (MR). The oscillator configuration allows design of either RC or crystal oscillator circuits. The oscillator may be replaced by an external clock signal at input RS. In this case keep the other oscillator pins (RTC and CTC) floating. The counter advances on the negative-going transition of RS. A HIGH level on MR resets the counter (Q3 to Q9 and Q11 to Q13 = LOW), independent of other input conditions. In the HCT version, the MR input is TTL compatible, but the RS input has CMOS input switching levels and can be driven by a TTL output by using a pull-up resistor to VCC. QUICK REFERENCE DATA GND = 0 V; Tamb =25 °C; tr =tf = 6 ns Notes 1. CPD is used to determine the dynamic power dissipation (PD in µW): PD =CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where: fi = input frequency in MHz fo = output frequency in MHz ∑ (CL × VCC2 × fo) = sum of outputs CL = output load capacitance in pF VCC = supply voltage in V 2. For HC the condition is VI = GND to VCC For HCT the condition is VI = GND to VCC − 1.5 V 3. For formula on dynamic power dissipation see next pages. ORDERING INFORMATION See “74HC/HCT/HCU/HCMOS Logic Package Information”. SYMBOL PARAMETER CONDITIONS TYPICAL UNIT HC HCT tPHL/ tPLH propagation delay CL = 15 pF; VCC =5 V RS to Q3 31 31 ns Qn to Qn+1 66ns tPHL MR to Qn 17 18 ns fmax maximum clock frequency 87 88 MHz CI input capacitance 3.5 3.5 pF CPD power dissipation capacitance per package notes 1, 2 and 3 40 40 pF |
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