SN74ALS166DBR Allicdata Electronics
Allicdata Part #:

296-5027-2-ND

Manufacturer Part#:

SN74ALS166DBR

Price: $ 2.00
Product Category:

Integrated Circuits (ICs)

Manufacturer: Texas Instruments
Short Description: IC PAR-LOAD SHIFT REGIST 16-SSOP
More Detail: N/A
DataSheet: SN74ALS166DBR datasheetSN74ALS166DBR Datasheet/PDF
Quantity: 1000
2000 +: $ 1.81322
Stock 1000Can Ship Immediately
$ 2
Specifications
Series: 74ALS
Packaging: Tape & Reel (TR) 
Part Status: Active
Logic Type: Shift Register
Output Type: Push-Pull
Number of Elements: 1
Number of Bits per Element: 8
Function: Parallel or Serial to Serial
Voltage - Supply: 4.5 V ~ 5.5 V
Operating Temperature: 0°C ~ 70°C
Mounting Type: Surface Mount
Package / Case: 16-SSOP (0.209", 5.30mm Width)
Supplier Device Package: 16-SSOP
Base Part Number: 74ALS166
Description

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Introduction
The SN74ALS166DBR is a high-performance 4-bit shift register integrated circuit that is used in computers and other digital devices as a mediator between the processor and the large storage arrays. It combines a dual 4-bit shift register and a low-power clock driver in one package. It is fabricated using BiCMOS (BiCMOS Integrated circuit) technology and is specified to operate from -55°C to 125°C. It is an arm of the Texas Instruments company, a technology leader in the development of logic and linear integrated circuits for the past several decades.

Functional description
The SN74ALS166DBR is a dual 4-bit register capable of data transfer between two separate memories and the processor. The device consists of four registers that allow data to be moved serially or in parallel with four different clock speeds selectable by the user. It has two independent master shift clocks with independent 4-bit registers. The four registers are partitioned into two separate 4-bit registers. The serial data input terminal (SDI) enables easy serial data loading and a data output terminal (DO) for serial data output.

Application Field
The SN74ALS166DBR is primarily used for data transfer between two separate memories. This shift register is suitable for memory mapped applications and is ideal for applications requiring fast data transfer between systems. With its independently selectable master shift clocks, it is also suitable for logic signals that require high speed operation and synchronization. Its high performance makes it suitable for use in both low and high end computers, such as data processing, computing, and audio-visual equipment.

Working Principle
The SN74ALS166DBR operates in four distinct modes. As data is shifted to the right, an output signal is generated on the Q output, and data can then be shifted to the left on the Q’ output. As the data shifts in each direction, the shift register can be clocked at different speeds. The SN74ALS166DBR is capable of both parallel and serial operations, allowing for the device to be used for both large and small transfers between two separate memories. It has two modes of operation: clocking mode and latch mode. In clocking mode, the device continuously shifts data between the two memories as the clock is pulsed. In latch mode, the device holds the data and only shifts when the register is triggered.

The SN74ALS166DBR has four selectable shift speeds, with a maximum speed of 40 MHz for clocking mode, and 25 MHz for the latch mode. Additionally, the device has two independent master shift clocks, allowing for two separate data transfers between memories. The shift register also has two enable pins, which allow the user to enable or disable data transfer according to their needs. Finally, it has a power-down mode which saves power when the device is not in use.

The specific data is subject to PDF, and the above content is for reference

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