# SNJ54121J - Texas Instruments Monostable Multivibrator

## Product Summary

The Texas Instruments SNJ54121J is a TTL monostable multivibrator with Schmitt-trigger inputs. It offers a programmable output pulse width and operates over a wide temperature range.

## Product Information

| Field | Value |
| --- | --- |
| Part Number | SNJ54121J |
| Manufacturer | Texas Instruments |
| Product Type | Monostable Multivibrator |
| Category | Uncategorized |
| Subcategory | Pulse & Delay Generators |
| Package | CFP |
| Mounting Type | Through Hole |

## Description

The SNJ54121J from Texas Instruments is a versatile monostable multivibrator designed for TTL applications. It features dual negative-transition-triggered inputs and a single positive-transition-triggered input that can function as an inhibit.

This device provides complementary output pulses with a programmable pulse width that can be adjusted from 40 nanoseconds to 28 seconds using external timing components. For applications requiring a fixed short pulse, an internal Rint can provide a pulse width of approximately 35 ns. The Schmitt-trigger input circuitry on the B input enhances noise immunity, allowing for jitter-free triggering even with slow input transition rates.

With an operating temperature range of -55°C to 125°C, the SNJ54121J is suitable for military-grade applications. Its output rise and fall times are TTL compatible and independent of the output pulse length. The pulse width stability is maintained through internal compensation, making it virtually independent of VCC and temperature variations.

Available in CFP and CDIP packages, this component is designed for through-hole mounting. Its features make it suitable for various timing and pulse generation circuits where reliable and stable pulse widths are critical.

## Availability and Pricing

| Field | Value |
| --- | --- |
| Stock Status | In Stock |
| Distributor Count | 1 |
| Total Stock | 3 |
| Price | $11.32 |
| Pricing Available | Yes |

## Estimated Pricing

| Quantity | Price Range |
| ---: | ---: |
| 1+ | $11.32 |

Estimated pricing is for guidance only and is not a live distributor offer.

## Distributor Offers

| Distributor | Stock | Unit Price | MOQ | Lead Time | Last Updated |
| --- | --- | --- | --- | --- | --- |
| Partservice | 3 |  |  |  |  |

## Features

- Monostable multivibrator with Schmitt-trigger inputs.
- Programmable output pulse width up to 28 seconds.
- Standard speed with tpd greater than 50ns.
- Wide operating temperature range of -55 to 125°C.
- Military rating suitable for demanding environments.

## Applications

- Pulse generation and shaping circuits.
- Timing control in digital systems.
- Event detection and triggering.
- Delay generation applications.

## Compliance

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

## Documents and Media

- Image: https://static.distyparts.com/disty-files/images/a2/7d/eb/j0014a.png
- Product Page: https://distyparts.com/product/snj54121j
- RFQ URL: https://distyparts.com/product/snj54121j#rfq

## FAQs

### What is the operating temperature range for the SNJ54121J?

The operating temperature range is -55 to 125°C.

### What type of input does the SNJ54121J feature?

The SNJ54121J features Schmitt-trigger input.

### What is the output type of the SNJ54121J?

The output type is Push-Pull.

### What is the supply current for the SNJ54121J?

The supply current is 36000 µA.

### What is the maximum IOL for the SNJ54121J?

The maximum IOL is 16 mA.

### What is the maximum IOH for the SNJ54121J?

The maximum IOH is -0.8 mA.

### Does the SNJ54121J have inhibit capability?

Yes, the SNJ54121J has inhibit capability.

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