器件名称:
MC100E136FNG
功能描述:
5V ECL 6-Bit Universal Up/Down Counter
文件大小:
158.64KB 共12页
简 介:
MC10E136, MC100E136 5V ECL 6-Bit Universal Up/Down Counter Description The MC10E/100E136 is a 6-bit synchronous, presettable, cascadable universal counter. The device generates a look-ahead-carry output and accepts a look-ahead-carry input. These two features allow for the cascading of multiple E136’s for wider bit width counters that operate at very nearly the same frequency as the stand alone counter. The CLOUT output will pulse LOW for one clock cycle one count before the E136 reaches terminal count. The COUT output will pulse LOW for one clock cycle when the counter reaches terminal count. For more information on utilizing the look-ahead-carry features of the device please refer to the applications section of this data sheet. The differential COUT output facilitates the E136’s use in programmable divider and self-stopping counter applications. Unlike the H136 and other similar universal counter designs, the E136 carryout and look-ahead-carryout signals are registered on chip. This design alleviates the glitch problem seen on many counters where the carry out signals are merely gated. Because of this architecture there are some minor functional differences between the E136 and H136 counters. The user, regardless of familiarity with the H136, should read this data sheet carefully. Note specifically (see logic diagram) the operation of the carry out outputs and the look-ahead-carry in input when utilizing the master reset. When left open all of the input pins will be pulled……
