Texas Instruments Octal D Type Flip-Flop PDIP-20
Texas Instruments octal D-type flip-flop in a 20-pin PDIP package with positive-edge triggering and clock-enable. 12 ns typical propagation delay.
The Texas Instruments Octal D Type Flip-Flop PDIP-20 is a high-speed, low-power integrated circuit containing eight positive-edge-triggered D-type flip-flops in a 20-pin PDIP (Plastic Dual In-line Package). It offers a typical propagation delay of 12 ns and a maximum frequency of up to 23 MHz, making it suitable for a wide range of digital logic applications.
Overview
This device contains eight flip-flops with single-rail outputs and a latched clock-enable (CLKEN, active low) input. Information at the data (D) inputs is transferred to the Q outputs on the positive-going edge of the clock pulse, but only when CLKEN is held low. The clock-enable function is engineered to prevent false clocking by transitions, which helps to maintain data integrity. Clock triggering occurs at a specific voltage level rather than being directly related to the transition time of the pulse, supporting stable operation.
Key Features
- Eight positive-edge-triggered D-type flip-flops (octal)
- Latched clock-enable (CLKEN, active low) input
- Typical propagation delay of 12 ns
- Maximum frequency of 23 MHz
- Outputs capable of driving up to 10 LSTTL loads
- Output drive of ±4 mA at 5 V
- Maximum low-power consumption of 80 µA
- Maximum input current of 1 µA
- Supply voltage range of 2 V to 6 V
- Operating temperature range of -40 °C to 85 °C
Applications
Designed for digital logic applications, this integrated circuit is suited to designers who require reliable data storage. Its 74HC logic family and 20-pin PDIP package provide a standard format for digital logic designs, and its low power consumption and low input current contribute to efficient operation. The device measures 33 mm in width, 15 mm in depth and 43 mm in height, and weighs 2.041 grams.
- Logic Family: 74HC
- Flip-Flop Type: D Type, Positive Edge-Triggered
- Number of Flip-Flops: 8 (Octal)
- IC Package: PDIP (DIP) 20-Pin
- Typical Propagation Delay: 12 ns
- Maximum Frequency: 23 MHz
- Output Current: 5.2 mA
- Output Drive: ±4 mA at 5 V
- Low Power Consumption: 80 µA Maximum
- Low Input Current: 1 µA Maximum
- Supply Voltage Range: 2 V to 6 V
- Operating Temperature Range: -40 °C to 85 °C
- Width: 33 mm
- Depth: 15 mm
- Height: 43 mm
- Weight: 2.041 grams
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