DECADE COUNTER; 4-BIT BINARY COUNTER
The SN54/74LS290 and SN54/74LS293 are high-speed 4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two section and either a divide-by-five (LS290) or divide-by-eight (LS293) section which are triggered by a HIGH-to-LOW transition on the clock inputs. Each section can be used separately or tied together (Q to CP)to form BCD, Bi-quinary, or Modulo-16 counters. Both of the counters have a 2-input gated Master Reset (Clear), and the LS290 also has a 2-input gated Master Set (Preset 9). • Corner Power Pin Versions of the LS90 and LS93 • Low Power Consumption . . . Typically 45 mW • High Count Rates . . . Typically 42 MHz • Choice of Counting Modes . . . BCD, Bi-Quinary, Binary • Input Clamp Diodes Limit High Speed Termination Effects
µ¥ÀÌÅͽÃÆ® º¸±â
* º» Á¦Ç°Àº °æ¿ì¿¡ µû¶ó ȣȯµÇ´Â Ÿ»ç Á¦Ç°À¸·Î º¯°æµÉ ¼ö ÀÖÀ½À» ¾Ë·Á µå¸³´Ï´Ù.
ÁÖ¹®½Ã Âü°í Çϼ¼¿ä~~ |