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SN74LS373DWR
IC D-TYPE TRANSP 8:8 20-SOIC
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- Mfr。パート #SN74LS373DWR
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- データシート SN74LS373DWR DataSheet
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仕様
| Series | 74LS |
| Part Status | Active |
| Logic Type | D-Type Transparent Latch |
| Circuit | 8:8 |
| Output Type | Tri-State |
| Voltage - Supply | 4.75V ~ 5.25V |
| Independent Circuits | 1 |
| Delay Time - Propagation | 12ns |
| Current - Output High, Low | 2.6mA, 24mA |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SOIC |
| Base Product Number | 74LS373 |
概要
Description
The SN74LS373DWR is an octal transparent latch designed for use in digital circuits. It features eight data inputs, eight outputs, and control inputs for enabling or disabling the latching function. The device operates on a low-power TTL (Transistor-Transistor Logic) architecture, making it suitable for high-speed applications.
When the latch enable (LE) input is high, data present on the inputs (A0-A7) is continuously transferred to the outputs (Y0-Y7). When LE is low, the outputs hold the last latched state. This functionality allows for temporary data storage and is often used in data buffering, temporary holding, and in applications requiring controlled data flow.
The SN74LS373DWR is available in a 20-pin dual in-line package (DIP) and is compatible with various TTL logic families. It is commonly used in microcontroller and FPGA interfacing, as well as in bus systems and digital signal processing applications.
When the latch enable (LE) input is high, data present on the inputs (A0-A7) is continuously transferred to the outputs (Y0-Y7). When LE is low, the outputs hold the last latched state. This functionality allows for temporary data storage and is often used in data buffering, temporary holding, and in applications requiring controlled data flow.
The SN74LS373DWR is available in a 20-pin dual in-line package (DIP) and is compatible with various TTL logic families. It is commonly used in microcontroller and FPGA interfacing, as well as in bus systems and digital signal processing applications.
Features
The SN74LS373DWR is an octal transparent latch designed for use in digital circuits. Key features include:
1. Octal Latch: Contains eight latches that can store data.
2. Transparent Operation: The latch is transparent when the enable (E) input is high, allowing data to pass from input (D) to output (Q).
3. Control Inputs: Has an active-low enable input, which controls the latch operation.
4. Low Power Consumption: Operates with low power dissipation typical of LS (Low Power Schottky) technology.
5. High-Speed Operation: Typically provides fast switching times, suitable for high-speed digital applications.
6. TTL Compatible: Compatible with TTL (Transistor-Transistor Logic) levels, making it suitable for interfacing with other TTL devices.
7. Multiple Supply Voltages: Can operate within a specified range of supply voltages.
8. Wide Temperature Range: Designed for reliable operation in various temperature ranges.
These features make the SN74LS373DWR ideal for applications in data buffering, temporary data storage, and digital signal processing.
1. Octal Latch: Contains eight latches that can store data.
2. Transparent Operation: The latch is transparent when the enable (E) input is high, allowing data to pass from input (D) to output (Q).
3. Control Inputs: Has an active-low enable input, which controls the latch operation.
4. Low Power Consumption: Operates with low power dissipation typical of LS (Low Power Schottky) technology.
5. High-Speed Operation: Typically provides fast switching times, suitable for high-speed digital applications.
6. TTL Compatible: Compatible with TTL (Transistor-Transistor Logic) levels, making it suitable for interfacing with other TTL devices.
7. Multiple Supply Voltages: Can operate within a specified range of supply voltages.
8. Wide Temperature Range: Designed for reliable operation in various temperature ranges.
These features make the SN74LS373DWR ideal for applications in data buffering, temporary data storage, and digital signal processing.
Package
The SN74LS373DWR is packaged in a TSSOP (Thin Shrink Small Outline Package) with 20 pins.
Pinout
The SN74LS373DWR is an octal transparent latch with 3-state outputs, designed for use in digital circuits. It has a total of 20 pins.
Pin Count and Functions:
- Pins 1-8 (A1-A8): Inputs for the data to be latched.
- Pins 9-10 (GND, VCC): Ground and power supply pins.
- Pin 11 (LE): Latch Enable input; when high, data is latched.
- Pin 12 (CLR): Clear input; when activated, it resets all outputs to low.
- Pins 13-20 (O1-O8): Outputs corresponding to the data inputs.
The device operates in transparent mode when the latch enable (LE) is high, allowing data to pass through from inputs to outputs. When LE goes low, the current input data is latched and held at the outputs until LE is activated again or the clear (CLR) function is used. The 3-state outputs allow multiple devices to connect to a common bus without interference.
Pin Count and Functions:
- Pins 1-8 (A1-A8): Inputs for the data to be latched.
- Pins 9-10 (GND, VCC): Ground and power supply pins.
- Pin 11 (LE): Latch Enable input; when high, data is latched.
- Pin 12 (CLR): Clear input; when activated, it resets all outputs to low.
- Pins 13-20 (O1-O8): Outputs corresponding to the data inputs.
The device operates in transparent mode when the latch enable (LE) is high, allowing data to pass through from inputs to outputs. When LE goes low, the current input data is latched and held at the outputs until LE is activated again or the clear (CLR) function is used. The 3-state outputs allow multiple devices to connect to a common bus without interference.
Manufacturer
The SN74LS373DWR is manufactured by Texas Instruments (TI), a prominent American technology company. Founded in 1930, Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits. The company is known for its innovations in analog, digital signal processing, and embedded processing, catering to diverse markets, including automotive, industrial, communications, and consumer electronics. TI is regarded as a leader in the semiconductor industry, providing a wide range of products, including microcontrollers, processors, and sensors, alongside its well-known educational tools like graphing calculators. Their commitment to research and development has positioned them as a key player in advancing technology solutions globally.
Application
The SN74LS373DWR is a quad latch device primarily used in digital circuits for temporary data storage and control. It finds applications in data buffering, temporary data holding in microprocessor interfacing, and as part of memory management systems. Additionally, it is used in various logic circuit designs, including address decoding and signal processing, where it helps manage and synchronize data flow between components.
Equivalent
The SN74LS373DWR is a low-power TTL octal transparent latch. Equivalent products include:
1. SN74HC373 - High-speed CMOS version.
2. SN74HCT373 - High-speed CMOS with TTL-compatible inputs.
3. MC74HC373 - Motorola equivalent.
4. 74LS373 - Standard LS version without "DWR" packaging.
Ensure to check specifications for compatibility with your application.
1. SN74HC373 - High-speed CMOS version.
2. SN74HCT373 - High-speed CMOS with TTL-compatible inputs.
3. MC74HC373 - Motorola equivalent.
4. 74LS373 - Standard LS version without "DWR" packaging.
Ensure to check specifications for compatibility with your application.
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