Overview
The CD74HC112PWR is a high-speed CMOS logic dual negative-edge-triggered J-K flip-flop with set and reset, manufactured by Texas Instruments. This component utilizes silicon-gate CMOS technology to achieve operating speeds equivalent to LSTTL parts while maintaining the low power consumption characteristic of standard CMOS integrated circuits. It is capable of driving 10 LSTTL loads and features independent J, K, PRE, CLR, and Clock inputs along with Q and Q outputs. The flip-flops change state on the negative-going transition of the clock pulse, and the PRE and CLR functions are accomplished asynchronously by low-level inputs.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC Supply Voltage | -0.5 | 7 | V | ||
| Input Diode Current (VI < -0.5 V or VI > VCC + 0.5 V) | ±20 | mA | |||
| Output Source or Sink Current per Output Pin | ±25 | mA | |||
| Junction Temperature | 150 | °C | |||
| Storage Temperature Range | -65 | 150 | °C | ||
| High Level Input Voltage (VCC = 4.5 V to 5.5 V) | 3.15 | 4.5 | V | ||
| Low Level Input Voltage (VCC = 4.5 V to 5.5 V) | 0.1 | 0.4 | V | ||
| Propagation Delay, CLK to Q, Q (VCC = 5 V, CL = 15 pF) | 175 | 220 | 265 | ns | |
| Clock Frequency (VCC = 5 V) | 6 | 30 | MHz |
Key Features
- Hysteresis on clock inputs for improved noise immunity and increased input rise and fall times.
- Asynchronous set and reset functions accomplished by low-level inputs.
- Independent J, K, PRE, CLR, and Clock inputs and Q and Q outputs.
- Change state on the negative-going transition of the clock pulse.
- Utilize silicon-gate CMOS technology for operating speeds equivalent to LSTTL parts.
- Low power consumption of standard CMOS integrated circuits.
- Able to drive 10 LSTTL loads.
- Functionally and pin-compatible with the standard LS logic family (for HCT types).
Applications
- Digital logic circuits requiring flip-flops with set and reset capabilities.
- Sequential logic designs where state changes are triggered by negative clock edges.
- Systems needing low power consumption and high noise immunity.
- Compatibility with both CMOS and TTL logic families, especially in mixed-signal designs.
- Automated control systems, digital counters, and other sequential logic applications.
Q & A
- What is the CD74HC112PWR used for?
The CD74HC112PWR is a dual negative-edge-triggered J-K flip-flop with set and reset, used in digital logic circuits and sequential logic designs.
- What technology does the CD74HC112PWR use?
The CD74HC112PWR utilizes silicon-gate CMOS technology.
- How does the CD74HC112PWR change state?
The flip-flops change state on the negative-going transition of the clock pulse.
- What are the asynchronous functions of the CD74HC112PWR?
The PRE and CLR functions are accomplished asynchronously by low-level inputs.
- What is the maximum clock frequency of the CD74HC112PWR?
The maximum clock frequency is approximately 30 MHz at VCC = 5 V.
- What is the power consumption of the CD74HC112PWR?
The CD74HC112PWR exhibits low power consumption characteristic of standard CMOS integrated circuits.
- How many LSTTL loads can the CD74HC112PWR drive?
The CD74HC112PWR can drive 10 LSTTL loads.
- Is the CD74HC112PWR compatible with other logic families?
Yes, the HCT types are functionally and pin-compatible with the standard LS logic family.
- What are the package options for the CD74HC112PWR?
The CD74HC112PWR is available in TSSOP (PW) package among others.
- What is the junction temperature range for the CD74HC112PWR?
The junction temperature range is up to 150°C.
