Overview
The SN74S373N is an octal D-type transparent latch produced by Texas Instruments. This component is part of the 74S series and is packaged in a 20-pin PDIP (N) package. It is designed to operate within an operating temperature range of 0°C to 70°C. The device features 3-state outputs, making it suitable for driving highly capacitive or relatively low-impedance loads in bus-organized systems without the need for interface or pullup components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | PDIP (N) | - |
| Pins | 20 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage (VCC) | 4.75 to 5.25 | V |
| High-Level Output Voltage (VOH) | 5.5 | V |
| High-Level Output Current (IOH) | -2 to -6.5 | mA |
| Data Setup Time (tsu) | 0 to 5 | ns |
| Data Hold Time (th) | 10 to 20 | ns |
| Storage Temperature Range (Tstg) | -65 to 150 | °C |
Key Features
- Choice of eight latches or eight D-type flip-flops in a single package.
- 3-State bus-driving outputs.
- Full parallel access for loading.
- Buffered control inputs.
- Clock-enable input has hysteresis to improve noise rejection.
- P-N-P inputs reduce DC loading on data lines.
- Schmitt-trigger buffered inputs at the enable/clock lines for improved noise rejection.
- Buffered output-control (OC) input to place outputs in normal logic state or high-impedance state.
Applications
The SN74S373N is particularly attractive for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. Its 3-state outputs make it suitable for driving bus lines in bus-organized systems without additional interface components.
Q & A
- What is the SN74S373N?
The SN74S373N is an octal D-type transparent latch with 3-state outputs, produced by Texas Instruments.
- What package type does the SN74S373N come in?
The SN74S373N comes in a 20-pin PDIP (N) package.
- What is the operating temperature range of the SN74S373N?
The operating temperature range is from 0°C to 70°C.
- What are the key features of the SN74S373N?
Key features include 3-state bus-driving outputs, full parallel access for loading, buffered control inputs, and Schmitt-trigger buffered inputs for noise rejection.
- How does the clock-enable input improve system design?
The clock-enable input has hysteresis, which improves noise rejection by typically 400 mV.
- What is the purpose of the buffered output-control (OC) input?
The OC input can place the eight outputs in either a normal logic state or the high-impedance state, where the outputs neither load nor drive the bus lines.
- What are some common applications of the SN74S373N?
Common applications include implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
- What is the supply voltage range for the SN74S373N?
The supply voltage range is from 4.75 V to 5.25 V.
- What is the storage temperature range for the SN74S373N?
The storage temperature range is from -65°C to 150°C.
- How does the P-N-P input structure benefit the device?
The P-N-P inputs reduce DC loading on data lines.
- What is the significance of the 3-state outputs in the SN74S373N?
The 3-state outputs are designed to drive highly capacitive or relatively low-impedance loads without the need for additional interface components.
