Overview
The SN74HC112D, 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 SN74HC112D is part of the HC series, known for its wide operating voltage range and low power consumption, making it suitable for a broad range of electronic systems.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| VCC Supply Voltage | V | 2 | 5 | 6 |
| VIH High-Level Input Voltage | V | 1.5 (VCC=2V) | 3.15 (VCC=4.5V) | 4.2 (VCC=6V) |
| VIL Low-Level Input Voltage | V | 0.8 (VCC=2V) | 1.35 (VCC=4.5V) | 1.5 (VCC=6V) |
| IOH Output Current | mA | -20 | -4 | -5.2 |
| IOL Output Current | mA | 20 | 4 | 5.2 |
| ICC Quiescent Current | μA | 4 | 40 | 80 |
| tpd Propagation Delay | ns | 13 (VCC=6V) | 25 (VCC=4.5V) | 56 (VCC=2V) |
| fmax Clock Frequency | MHz | 5 (VCC=2V) | 25 (VCC=4.5V) | 29 (VCC=6V) |
| TJ Junction Temperature | °C | - | - | 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 SN74HC112D?
The SN74HC112D operates over a voltage range of 2V to 6V.
- How many flip-flops are contained in the SN74HC112D?
The SN74HC112D contains two independent J-K negative-edge-triggered flip-flops.
- What is the maximum propagation delay of the SN74HC112D at VCC = 6V?
The typical propagation delay at VCC = 6V is 13ns.
- What is the maximum output current of the SN74HC112D?
The maximum output current is ±25 mA.
- What are the recommended operating conditions for the power supply voltage?
The power supply voltage should be between 2V and 6V, with a recommended bypass capacitor of 0.1μF.
- What are some common applications of the SN74HC112D?
Common applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- What is the junction temperature range for the SN74HC112D?
The junction temperature range is up to 150°C.
- How many LSTTL loads can the outputs of the SN74HC112D drive?
The outputs can drive up to 10 LSTTL loads.
- What is the typical power consumption of the SN74HC112D?
The typical power consumption is 40μA max ICC.
- What is the setup time before the clock edge for the SN74HC112D?
The setup time before the clock edge is typically 20ns at VCC = 4.5V.
