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54LS169LMQB Datasheet PDF - Fairchild Semiconductor

Part NameDescriptionManufacturer
54LS169LMQB Synchronous 4-Bit Up/Down Binary Counter Fairchild
Fairchild Semiconductor Fairchild
54LS169LMQB Datasheet PDF : 54LS169LMQB pdf   
DM74LS169A image

General Description
This synchronous presettable counter features an internal carry look-ahead for cascading in high-speed counting applications. Synchronous operation is provided by having all flip-flops clocked simultaneously, so that the outputs all change at the same time when so instructed by the count-enable inputs and internal gating. This mode of operation helps eliminate the output counting spikes that are normally associated with asynchronous (ripple clock) counters. A buffered clock input triggers the four master-slave flip-flops on the rising edge of the clock waveform.

Features
Fully synchronous operation for counting and programming.
Internal look-ahead for fast counting.
Carry output for n-bit cascading.
Fully independent clock circuit

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