Overview
The SN74HC374N is an octal edge-triggered D-type flip-flop integrated circuit produced by Texas Instruments. This component is part of the HC series and is designed for a wide range of digital logic applications. It features eight D-type flip-flops in a single package, making it suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The device operates with 3-state outputs, which can drive highly capacitive or relatively low-impedance loads, and includes an output-enable (OE) input to control the output states.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| Operating Temperature | -40 | 85 | °C | |
| Clock Frequency (fclock) at VCC = 2 V | 6 | MHz | ||
| Clock Frequency (fclock) at VCC = 4.5 V | 30 | MHz | ||
| Clock Frequency (fclock) at VCC = 6 V | 35 | MHz | ||
| Propagation Delay (tpd) | 80 | 230 | 345 | ns |
| Output Enable Time (ten) | 70 | 200 | 300 | ns |
| Power Supply Current (ICC) | 80 | µA | ||
| Input Current (II) | 1 | µA | ||
| Output Drive Current | ±6 | mA | ||
| Package Type | PDIP-20 |
Key Features
- Wide operating voltage range of 2 V to 6 V
- High-current 3-state true outputs can drive up to 15 LSTTL loads
- Eight D-type flip-flops in a single package
- Full parallel access for loading
- Low power consumption, with a maximum ICC of 80 µA
- Typical propagation delay (tpd) of 14 ns
- ±6-mA output drive at 5 V
- Low input current of 1 µA max
- Output-enable (OE) input for controlling output states
Applications
The SN74HC374N is particularly suitable for various digital logic applications, including:
- Implementing buffer registers
- I/O ports
- Bidirectional bus drivers
- Working registers
Q & A
- What is the operating voltage range of the SN74HC374N?
The operating voltage range is from 2 V to 6 V.
- How many D-type flip-flops are included in the SN74HC374N?
The device includes eight D-type flip-flops in a single package.
- What is the maximum clock frequency at VCC = 6 V?
The maximum clock frequency at VCC = 6 V is 35 MHz.
- What is the typical propagation delay (tpd) of the SN74HC374N?
The typical propagation delay is around 14 ns.
- How much current can the outputs drive at 5 V?
The outputs can drive up to ±6 mA at 5 V.
- What is the purpose of the output-enable (OE) input?
The OE input controls the output states, placing them in either a normal logic state or the high-impedance state.
- What is the maximum power supply current (ICC) of the SN74HC374N?
The maximum ICC is 80 µA.
- What is the input current (II) of the SN74HC374N?
The input current is a maximum of 1 µA.
- What are the common applications of the SN74HC374N?
Common applications include buffer registers, I/O ports, bidirectional bus drivers, and working registers.
- What type of package does the SN74HC374N come in?
The SN74HC374N comes in a PDIP-20 package.
