# MM74HC221AM - Texas Instruments Monostable Multivibrator

## Product Summary

The Texas Instruments MM74HC221AM is a dual non-retriggerable monostable multivibrator. It offers a wide power supply range and fast propagation delay.

## Product Information

| Field | Value |
| --- | --- |
| Part Number | MM74HC221AM |
| Manufacturer | Texas Instruments |
| Product Type | Monostable Multivibrator |
| Series | 74HC |
| Category | Uncategorized |
| Subcategory | Logic |
| Mounting Type | Through Hole |

## Description

The MM74HC221AM from Texas Instruments is a high-speed dual non-retriggerable monostable multivibrator utilizing advanced silicon-gate CMOS technology. It provides speeds comparable to low power Schottky TTL while retaining the benefits of CMOS, such as low power consumption and high noise immunity.

Key features include a typical propagation delay of 40 ns and a wide power supply range from 2V to 6V. The device has a low quiescent current of 80 µA maximum and a low input current of 1 µA maximum. It offers a fanout of 10 LS-TTL loads and a simple pulse width formula of T = RC, with a wide pulse range from 400 ns to infinity.

Each multivibrator has both a negative (A) and a positive (B) transition triggered input, which can also serve as inhibit inputs. A clear input, when taken low, resets the one-shot. The non-retriggerable nature ensures that the output pulse must time out before a new trigger is accepted. All inputs are protected against static discharge damage.

Available in a 16-Lead Plastic Dual-In-Line Package (PDIP), the MM74HC221AM is suitable for various digital logic applications requiring precise pulse generation.

## Key Specifications

| Specification | Value |
| --- | --- |
| Direction | Up, Down |
| Lead Style | Gull Wing |
| Logic Type | Binary Counter |
| Mounting Type | Through Hole |
| Operating Temperature | -40 °C to 85 °C |
| Package / Case | 16-CDIP (0.300", 7.62 mm) |
| Propagation Delay | 40 ns |
| Quiescent Current | 80 µA maximum |

## Availability and Pricing

| Field | Value |
| --- | --- |
| Stock Status | In Stock |
| Distributor Count | 1 |
| Total Stock | 95 |
| Pricing Available | No |

## Distributor Offers

| Distributor | Stock | Unit Price | MOQ | Lead Time | Last Updated |
| --- | --- | --- | --- | --- | --- |
| Chanetech | 95 |  |  |  |  |

## Features

- Dual non-retriggerable monostable multivibrator.
- Wide 2V to 6V power supply range.
- Fast 40 ns typical propagation delay.
- Low 80 µA maximum quiescent current.
- Fanout of 10 LS-TTL loads.

## Applications

- Precise pulse generation circuits.
- Timing control applications.
- Digital logic systems.
- Signal conditioning.

## Compliance

| Field | Value |
| --- | --- |
| RoHS Status | RoHS3 Compliant |
| REACH Status | REACH Unaffected |
| Moisture Sensitivity Level | 1 Unlimited |

## Documents and Media

- Datasheet: https://static.distyparts.com/disty-files/datasheets/f9/42/e5/10419521-MM74HC221AN-ND.pdf
- Product Page: https://distyparts.com/product/mm74hc221am-3
- RFQ URL: https://distyparts.com/product/mm74hc221am-3#rfq

## FAQs

### What is the typical propagation delay for the MM74HC221AM?

The typical propagation delay for the MM74HC221AM is 40 ns.

### What is the operating voltage range for the MM74HC221AM?

The MM74HC221AM operates over a wide power supply range of 2V to 6V.

### What is the maximum quiescent current of the MM74HC221AM?

The maximum quiescent current for the MM74HC221AM is 80 µA.

### What is the fanout capability of the MM74HC221AM?

The MM74HC221AM has a fanout of 10 LS-TTL loads.

### How is the pulse width determined for the MM74HC221AM?

The pulse width for the MM74HC221AM is determined by the formula T = RC, using external timing components.

### What is the operating temperature range for the MM74HC221AM?

The MM74HC221AM operates within a temperature range of -40°C to 85°C.

### What package type is the MM74HC221AM available in?

The MM74HC221AM is available in a 16-Lead Plastic Dual-In-Line Package (PDIP).

## Related Pages

- Manufacturer: https://distyparts.com/manufacturer/texas-instruments
- Category: https://distyparts.com/category/uncategorized/new-products
- Product Page: https://distyparts.com/product/mm74hc221am-3
- Markdown File: https://distyparts.com/product/mm74hc221am-3.md
- TXT File: https://distyparts.com/product/mm74hc221am-3.txt