onsemi MC14013BDR2G Dual D-Type Flip-Flop: Datasheet, Pinout, and Application Circuits

The onsemi MC14013BDR2G is a highly reliable, industry-standard integrated circuit belonging to the 4000-series CMOS logic family. This IC contains two independent positive-edge-triggered D-type flip-flops, each featuring complementary outputs (Q and Q̅), as well as Set and Reset inputs for direct control of the output state. Its ability to operate over a wide voltage range and its low power consumption make it a versatile choice for numerous digital applications, from simple data storage to complex sequential logic systems.

Datasheet Overview and Key Specifications

A thorough review of the datasheet is essential for proper circuit design. Key absolute maximum ratings and electrical characteristics include:

Supply Voltage Range (VDD): The device supports a wide operating voltage from 3V to 18V, making it compatible with both TTL levels and higher voltage systems.

Low Power Consumption: A standout feature of CMOS technology, it draws very little current in static conditions, typically in the nanoampere range.

High Noise Immunity: Characteristic of the 4000 series, it offers excellent noise immunity, typically 45% of the supply voltage.

Operating Temperature Range: The MC14013BDR2G is specified for operation from -55°C to +125°C, ensuring performance in industrial and automotive environments.

Output Drive Capability: It can source or sink current sufficient to drive two low-power TTL loads or one standard TTL load over the entire voltage range.

Pinout Configuration

The MC14013BDR2G is packaged in a 14-pin SOIC package. The pinout is standardized as follows:

Pin 1 (Q1): Output of the first flip-flop.

Pin 2 (Q̅1): Complementary output of the first flip-flop.

Pin 3 (CP1): Clock input for the first flip-flop.

Pin 4 (R1): Reset input (active HIGH) for the first flip-flop.

Pin 5 (D1): Data input for the first flip-flop.

Pin 6 (S1): Set input (active HIGH) for the first flip-flop.

Pin 7 (VSS): Ground (0V reference).

Pin 8 (S2): Set input for the second flip-flop.

Pin 9 (D2): Data input for the second flip-flop.

Pin 10 (R2): Reset input for the second flip-flop.

Pin 11 (CP2): Clock input for the second flip-flop.

Pin 12 (Q̅2): Complementary output of the second flip-flop.

Pin 13 (Q2): Output of the second flip-flop.

Pin 14 (VDD): Positive supply voltage.

Application Circuits

The MC14013BDR2G's functionality enables its use in a vast array of circuits.

1. Basic Data Latch/Register: The fundamental application is a single-bit data storage or delay element. The logic level present at the D input is transferred to the Q output only on the rising edge of the clock pulse. This is crucial for synchronizing data in digital systems.

2. Divide-by-2 Counter: A single flip-flop can be configured as a frequency divider. By connecting the Q̅ output directly back to the D input, the output toggles state on every positive clock edge, resulting in an output frequency that is exactly half of the clock frequency.

3. Shift Register: By cascading multiple flip-flops (e.g., connecting Q1 to D2), the IC can form a shift register. Data is shifted from one stage to the next with each clock pulse, enabling serial-to-parallel or parallel-to-serial data conversion.

4. Debounce Circuit: Mechanical switches generate noisy, bouncing signals when toggled. A D-type flip-flop can be wired as a debounce circuit, providing a clean, single transition output. The switch signal is connected to the clock input, with the D input tied to VDD. The first clock edge sets the output, and subsequent bounces are ignored until the switch is released and pressed again.

ICGOODFIND Summary

The onsemi MC14013BDR2G is a fundamental and robust building block for digital design. Its dual, independent flip-flop design offers excellent flexibility for creating registers, counters, and memory elements. Key advantages like wide operating voltage, very low power consumption, and high noise immunity ensure its continued relevance in both modern and legacy designs. For engineers and hobbyists alike, understanding this IC is a crucial step in mastering sequential logic.

Keywords:

1. D-Type Flip-Flop

2. CMOS Logic

3. Data Storage

4. Positive-Edge-Triggered

5. Set-Reset