Datasheet Details
Part number:
SN74LS569A, SN74LS569DW
Manufacturer:
Motorola
File Size:
260.06 KB
Description:
Four-bit up/down counter.
Note:
This datasheet PDF includes multiple part numbers: SN74LS569A, SN74LS569DW.
Please refer to the document for exact specifications by model.
SN74LS569A, SN74LS569DW, FOUR-BIT UP/DOWN COUNTER
FOUR-BIT UP/DOWN COUNTER WITH THREE-STATE OUTPUTS The SN54 / 74LS569A is designed as programmable up/down BCD and Binary counters respectively.
These devices have 3-state outputs for use in bus organized systems.
With the exception of output enable (OE) and asynchronous clear (ACLR), all functions occur on the positive edge of the clock pulse (CP).
When the LOAD input is LOW, the outputs will be programmed by the parallel data inputs (A, B, C, D) on the next clock edge.
Enabling of the counters
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