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Микросхема CD4029BE (КР1561ИЕ14), Счетчик 4-бит двоично-десятичный …

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Характеристики

CD4029BE (КР1561ИЕ14), Счетчик 4-бит двоично-десятичный …The CD4029BE is a CMOS presettable Up/Down Counter consists of a four-stage binary or BCD-decade up/down counter with provisions for look-ahead carry in both counting modes. The inputs consist of a single Clock, Carry-In (Clock Enable), Binary/Decade, Up/Down, Preset Enable and four individual JAN signals, Q1, Q2, Q3, Q4 and a carry out signal are provided as outputs. A high preset enable signal allows information on the jam inputs to preset the counter to any state asynchronously with the clock. A low on each JAM line, when the preset-enable signal is high, resets the counter to its zero count. The counter is advanced one count at the positive transition of the clock when the carry-in and preset enable signals are low. Advancement is inhibited when the carry-in or preset enable signals are high. The CARRY-OUT signal is normally high and goes low when the counter reaches its maximum count in the UP mode or the minimum count in the down mode provided the carry-in signal is low.

• Medium-speed operation
• Multi-package parallel clocking for synchronous high speed output
• Preset Enable and individual Jam inputs provided
• Binary or decade up/down counting
• BCD outputs in decade mode
• 100% Tested for quiescent current at 20V
• Standardized, symmetrical output characteristics
• Maximum input current of 1µA at 18V
• Green product