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HD74121 from HIT

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HD74121

Manufacturer: HIT

TTL HD74/HD74S Series

Partnumber Manufacturer Quantity Availability
HD74121 HIT 501 In Stock

Description and Introduction

TTL HD74/HD74S Series The HD74121 is a monostable multivibrator (one-shot) IC manufactured by Hitachi (HIT). Here are its key specifications:

1. **Function**: Monostable multivibrator with Schmitt-trigger inputs.
2. **Supply Voltage**: Operates at **5V** (standard TTL logic levels).
3. **Inputs**: Features **A1, A2** (active-low) and **B** (active-high) trigger inputs.
4. **Output**: Provides complementary outputs (**Q** and **Q̅**).
5. **Pulse Width**: Adjustable via external timing components (resistor and capacitor).
6. **Propagation Delay**: Typically **30 ns**.
7. **Temperature Range**: **0°C to +70°C** (commercial grade).
8. **Package**: Available in **14-pin DIP** (Dual In-line Package).
9. **Compatibility**: TTL-compatible inputs and outputs.

Note: Timing accuracy depends on external components. Always refer to the official Hitachi datasheet for precise values.

Partnumber Manufacturer Quantity Availability
HD74121 173 In Stock

Description and Introduction

TTL HD74/HD74S Series The HD74121 is a monostable multivibrator (one-shot) manufactured by Hitachi. Key specifications include:

- Supply voltage range: 4.5V to 16V
- Output current: 20mA (sink or source)
- Propagation delay: 35ns (typical)
- Power dissipation: 500mW
- Operating temperature range: -55°C to +125°C
- Available in 14-pin DIP package
- Trigger inputs: A1, A2 (active LOW) and B (active HIGH)
- Retriggerable: No
- Output pulse width adjustable via external resistor and capacitor
- TTL compatible inputs

The device provides both Q and Q̅ (complementary) outputs and features Schmitt trigger input circuitry for noise immunity.

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