Overview
The SN74HC112N is a dual J-K negative-edge-triggered flip-flop integrated circuit designed by Texas Instruments. This device is part of the 74HC series, known for its high-speed operation and wide operating voltage range. It contains two independent J-K flip-flops, each with clear, set-direct, and reset-direct inputs, making it versatile for various digital circuit applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V |
| VIH High-Level Input Voltage | 1.5 (VCC=2V) | 3.15 (VCC=4.5V) | 4.2 (VCC=6V) | V |
| VIL Low-Level Input Voltage | 0.1 | 0.1 | 0.1 | V |
| ICC Power Consumption | 4 | 40 | 40 | μA |
| tpd Propagation Delay | 13 (VCC=6V) | 25 (VCC=4.5V) | 185 (VCC=2V) | ns |
| fmax Clock Frequency | 5 (VCC=2V) | 25 (VCC=4.5V) | 29 (VCC=6V) | MHz |
| Output Drive | ±4mA (VCC=5V) | mA |
Key Features
- Wide operating voltage range of 2V to 6V
- High-speed operation with typical propagation delay of 13ns at 6V
- Outputs can drive up to 10 LSTTL loads
- Low power consumption, with a maximum ICC of 40μA
- Independent set-direct (SD) and reset-direct (RD) inputs for each flip-flop
- Clear inputs for resetting the flip-flop outputs
- Low input current of 1μA max
Applications
- Servers
- LED displays
- Network switches
- Telecom infrastructure
- Motor drivers
- I/O expanders
Q & A
- What is the operating voltage range of the SN74HC112N?
The SN74HC112N operates over a voltage range of 2V to 6V.
- How many flip-flops does the SN74HC112N contain?
The SN74HC112N contains two independent J-K flip-flops.
- What are the types of inputs available on the SN74HC112N?
The device has J-K inputs, clear inputs, set-direct inputs, and reset-direct inputs.
- What is the maximum propagation delay of the SN74HC112N at 6V?
The maximum propagation delay at 6V is approximately 42ns.
- What is the maximum output drive current of the SN74HC112N at 5V?
The maximum output drive current at 5V is ±4mA.
- What are some common applications of the SN74HC112N?
Common applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- What is the typical power consumption of the SN74HC112N?
The typical power consumption is 40μA.
- What is the recommended bypass capacitor for the power supply of the SN74HC112N?
A 0.1μF capacitor is recommended, and it is acceptable to parallel multiple bypass capacitors to reject different frequencies of noise.
- What are the package options available for the SN74HC112N?
The device is available in several package options including SOIC, PDIP, CDIP, LCCC, and CFP.
- What is the junction temperature range for the SN74HC112N?
The junction temperature range is from -40°C to 125°C for different package types.
