SN74HC166PWR

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SN74HC166PWR

IC SHIFT REGISTER 8BIT 16-TSSOP

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Spezifikationen

Supplier Texas Instruments
Package Tape & Reel (TR),Cut Tape (CT)
Series 74HC
ProductStatus Active
LogicType Shift Register
OutputType Push-Pull
NumberofElements 1
NumberofBitsperElement 8
Function Parallel or Serial to Serial
Voltage-Supply 2V ~ 6V
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 16-TSSOP (0.173, 4.40mm Width)

Übersicht

Description

SN74HC166PWR is an 8-bit shift register from the 74HC family with parallel load capability. Key aspects:
- Architecture: D0–D7 parallel data inputs, SER serial data input, Q0–Q7 outputs, CP clock input, SH/LD mode control.
- Modes:
- Load: when SH/LD is low, on a clock edge the D inputs are loaded into Q0–Q7.
- Shift: when SH/LD is high, data shifts in serially from SER on each clock edge.
- Package: 14-pin DIP (PWR variant) with standard Vcc and GND pins.
- Supply and levels: operates from about 2–6 V CMOS levels; compatible with standard TTL/CMOS logic.
- Applications: serial-to-parallel conversion, data buffering, display driving, keyboard/scanner, and other shift-register tasks.
- Notes: no dedicated asynchronous reset; performance depends on supply voltage.
In short, the SN74HC166PWR is a versatile 8-bit register that can either load 8 bits in parallel or shift in data serially, controlled by SH/LD, with parallel outputs Q0–Q7.

Features

Key features of SN74HC166PWR (8-bit shift register):
- Serial-in, parallel-out 8-bit shift register (one serial input, eight parallel outputs Q0–Q7).
- Data shifts on the rising edge of the clock.
- Asynchronous clear (reset) to force all outputs to 0.
- CMOS, high-speed 74HC family: low power consumption and fast operation.
- Wide supply range: typically 2V to 6V (5V common operation).
- Industrial temperature range: -40°C to +125°C.
- Available in standard 14-pin packages (e.g., DIP, SOIC); PWR variant denotes power-packaged option.
Notes: No internal latches; straightforward serial-in to parallel-out operation suitable for simple shift-register tasks.

Package

SN74HC166PWR is a 16-pin TSSOP (Thin Shrink Small Outline Package) surface-mount device. "PW" denotes the TSSOP package; the trailing "R" indicates tape-and-reel packaging for automated assembly.

Pinout

Pin count: 16 pins (TSSOP-16 for the PWR package).
Function: The SN74HC166 is an 8-bit parallel-load/serial-shift shift register. It accepts eight parallel inputs (P0–P7) that can be loaded into the register (active-low parallel load), then shifts the data right on clock edges to produce a serial output (Q7/Q7’) while supporting a serial serial-in and clock inhibit. Common use: parallel-to-serial conversion and cascaded shift-register chains.

Manufacturer

Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational semiconductor company (headquartered in Dallas, Texas) that designs and manufactures analog and embedded processing integrated circuits, microcontrollers, logic devices and related semiconductor products; it is one of the world’s largest semiconductor firms.

Equivalent

Equivalent devices are any 74HC166-family 8‑bit parallel‑load/serial‑shift registers. Examples: CD74HC166, MC74HC166, Nexperia (74HC166D/74HC166PW), ST/Micro (M74HC166), and ON Semiconductor variants. For TTL‑level compatibility use 74HCT166 equivalents. Check package (TSSOP/SOIC) and timing/power specs for drop‑in replacement.

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