Overview
The SN74HC112DT, produced by Texas Instruments, is a dual J-K negative-edge-triggered flip-flop integrated circuit. This device contains two independent flip-flops, each capable of operating independently. The flip-flops are triggered on the negative edge of the clock pulse, making them versatile for various digital circuit applications. The SN74HC112DT is part of the HC logic family, known for its wide operating voltage range and low power consumption, making it suitable for a broad range of electronic systems.
Key Specifications
| Parameter | Min | Nom | 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 | 0.8 (VCC=2V) | 1.35 (VCC=4.5V) | 1.8 (VCC=6V) | V |
| IOH Output Current | -20μA | -4mA | -5.2mA | A |
| IOL Output Current | 20μA | 4mA | 5.2mA | A |
| ICC Quiescent Current | 4 | 80 | 40 | μA |
| tpd Propagation Delay | 13ns (VCC=6V) | 25ns (VCC=4.5V) | 125ns (VCC=2V) | ns |
| fmax Clock Frequency | 5MHz (VCC=2V) | 25MHz (VCC=4.5V) | 29MHz (VCC=6V) | MHz |
| TJ Junction Temperature | - | - | 150 | ℃ |
Key Features
- Wide operating voltage range of 2V to 6V
- Outputs can drive up to 10 LSTTL loads
- Low power consumption, with a maximum ICC of 40μA
- Typical propagation delay of 13ns at VCC = 6V
- ±4mA output drive at 5V
- 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 SN74HC112DT?
The operating voltage range is from 2V to 6V. - How many flip-flops are contained in the SN74HC112DT?
The device contains two independent J-K negative-edge-triggered flip-flops. - What is the maximum propagation delay at VCC = 6V?
The typical propagation delay at VCC = 6V is 13ns. - What is the maximum output current of the SN74HC112DT?
The maximum output current is ±5.2mA. - What are the recommended operating conditions for the power supply?
The power supply can be any voltage between the minimum and maximum supply voltage rating, and each VCC terminal should have a good bypass capacitor. - What is the junction temperature range for the SN74HC112DT?
The junction temperature range is up to 150℃. - Can the SN74HC112DT be used in high-frequency applications?
Yes, it can operate at clock frequencies up to 29MHz at VCC = 6V. - What are the typical applications of the SN74HC112DT?
Typical applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders. - How many LSTTL loads can the outputs of the SN74HC112DT drive?
The outputs can drive up to 10 LSTTL loads. - What is the quiescent current consumption of the SN74HC112DT?
The maximum quiescent current consumption is 40μA.
