SN74ALS323 Series

8-Bit Universal Shift/Storage Registers With Synchronous Clear And 3-State Outputs

Catalog

8-Bit Universal Shift/Storage Registers With Synchronous Clear And 3-State Outputs

Part	Logic Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Output Type	Number of Elements	Supplier Device Package	Package / Case	Package / Case [y]	Package / Case [y]	Mounting Type	Number of Bits per Element	Function	Package / Case	Package / Case
Texas Instruments SN74ALS323DW	Multiplexed Register	70 °C	0 °C	4.5 V	5.5 V	Tri-State	1	20-SOIC	20-SOIC	0.295 in	7.5 mm	Surface Mount	8	Universal
Texas Instruments SN74ALS323N	Multiplexed Register	70 °C	0 °C	4.5 V	5.5 V	Tri-State	1	20-PDIP	20-DIP			Through Hole	8	Universal	7.62 mm	0.3 in
Texas Instruments SN74ALS323N3

Catalog

8-Bit Universal Shift/Storage Registers With Synchronous Clear And 3-State Outputs

Key Features

• Multiplexed I/O Ports Provide Improved Bit DensityFour Modes of Operation:Hold (Store)Shift RightShift LeftLoad DataOperate With Outputs Enabled or at High Impedance3-State Outputs Drive Bus Lines DirectlyCan Be Cascaded for n-Bit Word LengthsSynchronous ClearApplications:Stacked or Push-Down RegistersBuffer StorageAccumulator RegistersPackage Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPsMultiplexed I/O Ports Provide Improved Bit DensityFour Modes of Operation:Hold (Store)Shift RightShift LeftLoad DataOperate With Outputs Enabled or at High Impedance3-State Outputs Drive Bus Lines DirectlyCan Be Cascaded for n-Bit Word LengthsSynchronous ClearApplications:Stacked or Push-Down RegistersBuffer StorageAccumulator RegistersPackage Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

Description

These 8-bit universal shift/storage registers feature multiplexed input/output (I/O) ports to achieve full 8-bit data handling in a 20-pin package. Two function-select (S0, S1) inputs and two output-enable (OE1\, OE2\) inputs can be used to choose the modes of operation listed in the function table. Synchronous parallel loading is accomplished by taking both S0 and S1 high. This places the 3-state outputs in the high-impedance state and permits data applied on the I/O ports to be clocked into the register. Reading out of the register can be accomplished while the outputs are enabled in any mode. Clearing occurs synchronously when the clear (CLR\) input is low. Taking either OE1\ or OE2\ high disables the outputs but has no effect on clearing, shifting, or storing data. The SN54ALS323 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS323 is characterized for operation from 0°C to 70°C. These 8-bit universal shift/storage registers feature multiplexed input/output (I/O) ports to achieve full 8-bit data handling in a 20-pin package. Two function-select (S0, S1) inputs and two output-enable (OE1\, OE2\) inputs can be used to choose the modes of operation listed in the function table. Synchronous parallel loading is accomplished by taking both S0 and S1 high. This places the 3-state outputs in the high-impedance state and permits data applied on the I/O ports to be clocked into the register. Reading out of the register can be accomplished while the outputs are enabled in any mode. Clearing occurs synchronously when the clear (CLR\) input is low. Taking either OE1\ or OE2\ high disables the outputs but has no effect on clearing, shifting, or storing data. The SN54ALS323 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS323 is characterized for operation from 0°C to 70°C.