Key facts
- Brand
- Fairchild
- Model
- 74F109
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-08-07
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National Semiconductor 54F/74F109 Dual JK Flip-Flop Datasheet
This document provides a comprehensive technical overview of the National Semiconductor 54F/74F109, a high-speed dual JK positive edge-triggered flip-flop. It details the device's logic operations, including its ability to function as a D flip-flop, and lists various ordering codes for different package types such as DIP, SOIC, and ceramic carriers.
The datasheet includes absolute maximum ratings, DC and AC electrical characteristics for both commercial and military temperature ranges, and detailed physical dimensions for all available packages. It also presents truth tables and connection diagrams to assist in circuit design and implementation.
Fairchild 74F109 specifications
| Device Type | Dual JK Positive Edge-Triggered Flip-Flop |
|---|---|
| ESD Protection | 4000V minimum |
| Supply Voltage (Commercial) | +4.5V to +5.5V |
| Supply Voltage (Military) | +4.5V to +5.5V |
Source: National Semiconductor 54F/74F109 Dual JK Flip-Flop Datasheet
All Fairchild 74F109 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
Can the 54F/74F109 operate as a D flip-flop?
Yes, it can operate as a D flip-flop by connecting the J and K inputs.
From: National Semiconductor 54F/74F109 Dual JK Flip-Flop Datasheet
Are the Clear and Set inputs dependent on the clock?
No, the Clear and Set inputs are independent of the clock.
From: National Semiconductor 54F/74F109 Dual JK Flip-Flop Datasheet
Can the 74F109 operate as a D-type flip-flop?
Yes, it can operate as a D-type flip-flop by connecting the J and K inputs.
From: Fairchild Semiconductor 74F109 Dual JK Flip-Flop Datasheet
Are the clear and set inputs dependent on the clock?
No, the Clear and Set inputs are independent of the clock.
From: Fairchild Semiconductor 74F109 Dual JK Flip-Flop Datasheet
What are the asynchronous inputs of the 74F109?
The SD input sets Q high when low, and the CD input sets Q low when low; both low simultaneously force both Q and Q̅ high.
From: Fairchild 74F109 Dual JK Positive Edge-Triggered Flip-Flop Datasheet
What supply voltage range is recommended for the 74F109?
The recommended supply voltage is between +4.5 V and +5.5 V.
From: Fairchild 74F109 Dual JK Positive Edge-Triggered Flip-Flop Datasheet