General description
The 74LVC169 is a synchronous presettable 4-bit binary counter which features an internal look-ahead carry circuitry for cascading in high-speed counting applications. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs (pins Q0 to Q3) change simultaneously with each other when so instructed by the count-enable (pins CEP and CET) inputs and internal gating. This mode of operation eliminates the output counting spikes that are normally associated with asynchronous (ripple clock) counters. A buffered clock (pin CP) input triggers the four flip-flops on the LOW-to-HIGH transition of the clock.

FEATUREs
■ 5 V tolerant inputs for interfacing with 5 V logic
■ Wide supply voltage range from 1.2 V to 3.6 V
■ CMOS low power consumption
■ Direct interface with TTL levels
■ Up/down counting
■ Two count enable inputs for n-bit cascading
■ Built-in look-ahead carry capability
■ Presettable for programmable operation
■ Complies with JEDEC standard JESD8-B / JESD36
■ ESD protection:
    ◆ HBM JESD22-A114D exceeds 2000 V
    ◆ CDM JESD22-C101C exceeds 1000 V
■ Multiple package options
■ Specified from −40 °C to +85 °C and from −40 °C to +125 °C.