SN74LS373N

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SN74LS373N

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IC OCT D-TYPE LATCH 20-DIP

  • ManufacturerTexas Instruments

  • Mfr. Part #SN74LS373N

  • Package PDIP (N)-20

  • In Stock2721

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Specifications

Attribute Value
Package Tube
Series 74LS
ProductStatus Active
LogicType D-Type Transparent Latch
Circuit 8:8
OutputType Tri-State
Voltage-Supply 4.75V ~ 5.25V
IndependentCircuits 1
DelayTime-Propagation 12ns
Current-OutputHighLow 2.6mA, 24mA
OperatingTemperature 0°C ~ 70°C
MountingType Through Hole
Package/Case 20-DIP (0.300, 7.62mm)

Overview

Description

The SN74LS373N is an octal transparent D-type latch integrated circuit, commonly used in digital electronics. It features eight latches, each capable of storing a single bit of data. The latch is transparent, meaning that when the enable pin (typically labeled as G) is active, the data inputs are directly transferred to the outputs. When the enable pin is deactivated, the last state of the data is retained at the outputs, effectively "latching" the data.
Key specifications include:
- Power Supply: Operates with a typical voltage of 5V.
- Inputs/Outputs: Consists of 8 inputs and 8 outputs, accommodating octal data storage.
- Control: Includes an active-low output enable pin (OE) which, when activated, forces the outputs into a high-impedance state.
- Package: Available in a 20-pin dual in-line package (DIP).
Applications of the SN74LS373N span from data buffering and storage to driving LEDs or other display devices in microcontrollers and microprocessor systems. Its reliable performance and ease of use make it popular in educational and industrial projects.

Equivalent

The SN74LS373N is an octal transparent D-type latch with 3-state outputs. Equivalent products include:
1. Fairchild's DM74LS373N
2. ON Semiconductor's MC74HC373N
3. NXP's 74HC373N
4. STMicroelectronics' M74HC373B1
5. Microchip's TC74HC373AP
These products offer similar functionality, but it's essential to verify specifications and performance characteristics to ensure compatibility for specific applications.

Features

The SN74LS373N is an octal D-type transparent latch with 3-state outputs. Key features include:
1. High-Performance: It features Schottky-clamped TTL circuitry for high-speed operation.
2. 8-Bit Latch: Contains eight latches to provide data storage.
3. Transparent Operation: When the latch-enable (LE) input is high, the device operates in transparent mode, allowing data inputs to flow through to outputs.
4. 3-State Outputs: Outputs can be in one of three states: high, low, or high-impedance, controlled by the output-enable (OE) input.
5. Latch Enable and Output Control: The device has independent latch enable and output enable controls for flexible data handling.
6. Wide Operating Voltage: Operates typically around 5V.
7. Package Type: Available in a 20-pin Dual In-line Package (DIP).
These features make the SN74LS373N suitable for a variety of applications requiring data storage and bus interfacing.

Pinout

The SN74LS373N is an octal transparent D-type latch with three-state outputs. It has a total of 20 pins. The functions of the pins are as follows:
- Pins 1-8 (D0-D7): Data inputs for the 8-bit latch. These are the data lines that the latch will capture when enabled.
- Pin 9 (GND): Ground connection.
- Pin 11 (Q7): The output corresponding to data input D7.
- Pins 12-19 (Q6-Q0): Outputs corresponding to data inputs D6-D0 respectively.
- Pin 10 (LE): Latch Enable input. When high, the data at the inputs (D0-D7) are latched into the device.
- Pin 20 (VCC): Supply voltage.
The three-state outputs (Q0-Q7) allow for bus interfacing by enabling multiple devices to connect to the same bus line without interference, provided only one device drives the bus at a time. This is controlled by the Output Enable (OE) pin, which is typically found on pin 11 in similar devices but is not explicitly listed in the above description, possibly indicating a variation in labeling or packaging.

Manufacturer

The SN74LS373N is manufactured by Texas Instruments (TI). Texas Instruments is an American technology company that designs and manufactures semiconductors and various integrated circuits, which are used in a wide array of electronic devices. TI is known for its innovation and leadership in the semiconductor industry, providing solutions that range from analog and embedded processing to digital light processing (DLP) technology. The company serves a diverse customer base across numerous sectors such as automotive, industrial, consumer electronics, and communications. Texas Instruments is highly regarded for its research and development efforts and its influence on the electronics and technology landscape.

Application

The SN74LS373N is an octal D-type transparent latch used in digital circuits for temporary data storage and management. Its primary applications include buffering of data to alleviate bus contention, interfacing between different logic levels, and holding data for processing in microcontrollers or microprocessors. It is commonly used in applications such as memory address latching, flip-flop replacement, and in control systems where stable data storage is crucial. The device is also suitable for use in LED displays, communication systems, and data acquisition systems where synchronization and data integrity are important. Its ability to latch data ensures that systems maintain accurate data flow and timing.

Package

The SN74LS373N is a type of octal D-type transparent latch IC with tri-state outputs. The "N" in its part number typically refers to its dual in-line package (DIP) configuration. It is commonly used in applications requiring temporary data storage and isolation.

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