HomedatasheetSN74HC166AIDRQ1

SN74HC166AIDRQ1 Datasheet

Counter Shift Registers
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Description

This SN74HC166AIDRQ1 is parallel-in or serial-in, serial-out register features gated clock (CLK, CLK INH) inputs and an overriding clear (CLR) input. The parallel-in or serial-in modes are established by the shift /load (SH/LD) input. When high, SH/LD enables the serial (SER) data input and couples the eight flip-flops for serial shifting with each clock (CLK) pulse. When low, the parallel (broadside) data inputs are enabled, and synchronous loading occurs on the next clock pulse. During parallel loading, serial data flow is inhibited.Clocking is accomplished on the low-to-high-level edge of CLK through a 2-input positive-NOR gate, permitting one input to be used as a clock-enable or clock-inhibit function. Holding either CLK or CLK INH high inhibits clocking; holding either low enables the other clock input. This allows the system clock to be free running, and the register can be stopped on command with the other clock input. CLK INH should be changed to the high level only when CLK is high. CLR overrides all other inputs, including CLK, and resets all flip-flops to zero. SN74HC166AIDRQ1 Features • Qualified for Automotive Applications• ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)• Wide Operating Voltage Range of 2 V to 6 V• Outputs Can Drive Up To 10 LSTTL Loads• Low Power Consumption, 80-μA Max ICC• Typical tpd = 13 ns• ±4-mA Output Drive at 5 V
Features

Parameters

[{"Name":"Counting Sequence","Value":"Serial/Parallel to Serial "},{"Name":"Number of Circuits","Value":"1"},{"Name":"Package / Case","Value":"SOIC-16 "},{"Name":"Logic Family","Value":"74HC "},{"Name":"Logic Type","Value":"CMOS "},{"Name":"Number of Input Lines","Value":"5"},{"Name":"Output Type","Value":"Parallel / Serial "},{"Name":"Propagation Delay Time","Value":"150 ns, 30 ns, 26 ns "},{"Name":"Packaging","Value":"Reel "}]

Manufacturer information

SIEMENS [SIEMENS SEMICONDUCTOR GROUP]
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