MM74C373WM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data storage and retrieval
• Characteristics: High-speed, latch-based, octal transparent latch with 3-state outputs
• Package: 20-pin wide SOIC (Small Outline Integrated Circuit)
• Essence: The MM74C373WM is a versatile latch IC that can store and retrieve data in various applications.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Latch Type: Transparent
• Number of Latches: 8
• Output Type: 3-state
• Output Current: ±6mA
• Propagation Delay Time: 10ns (max)
• Input Capacitance: 5pF (typ)
• Output Capacitance: 15pF (typ)

Detailed Pin Configuration

The MM74C373WM has a total of 20 pins, each serving a specific purpose:

1. GND: Ground
2. D0: Data input for latch 0
3. D1: Data input for latch 1
4. D2: Data input for latch 2
5. D3: Data input for latch 3
6. D4: Data input for latch 4
7. D5: Data input for latch 5
8. D6: Data input for latch 6
9. D7: Data input for latch 7
10. LE: Latch enable input
11. OE: Output enable input
12. Q0: Output for latch 0
13. Q1: Output for latch 1
14. Q2: Output for latch 2
15. Q3: Output for latch 3
16. Q4: Output for latch 4
17. Q5: Output for latch 5
18. Q6: Output for latch 6
19. Q7: Output for latch 7
20. VCC: Supply voltage

Functional Features

• Octal transparent latches allow data to be stored and retrieved simultaneously on all eight latches.
• Latch enable (LE) input controls the storage of data into the latches.
• Output enable (OE) input enables or disables the outputs, allowing for three-state operation.
• High-speed operation with a propagation delay time of up to 10ns.

Advantages and Disadvantages

Advantages

• Versatile and widely used in various applications requiring data storage and retrieval.
• High-speed operation allows for efficient data handling.
• Three-state outputs provide flexibility in controlling output signals.

Disadvantages

• Limited number of latches (8) compared to other ICs with higher latch counts.
• Requires external control signals (LE and OE) for proper operation.

Working Principles

The MM74C373WM is based on transparent latch technology. When the latch enable (LE) input is high, the data inputs (D0-D7) are transferred to the corresponding latch outputs (Q0-Q7). The output enable (OE) input controls whether the latch outputs are active or in a high-impedance state.

Detailed Application Field Plans

The MM74C373WM finds applications in various fields, including:

1. Data storage systems
2. Address decoding circuits
3. Register banks
4. Memory modules
5. Microprocessor-based systems

Alternative Models

Here are some alternative models that can be considered as replacements for the MM74C373WM:

1. SN74LS373: Octal D-type transparent latch with 3-state outputs
2. CD74HC373: High-speed CMOS logic octal transparent latch
3. 74HCT373: Octal D-type transparent latch with 3-state outputs

These alternative models offer similar functionality and can be used as drop-in replacements in many applications.

In conclusion, the MM74C373WM is a versatile latch IC that provides high-speed data storage and retrieval capabilities. Its octal design, three-state outputs, and wide operating temperature range make it suitable for various applications. However, its limited latch count and dependence on external control signals should be considered when selecting this IC for specific projects.