Overview
The SN74HC74NG4, produced by Texas Instruments, is a dual D-type positive-edge-triggered flip-flop integrated circuit. This device contains two independent flip-flops, each with asynchronous preset and clear pins. It is part of the HC74 series, known for its high-speed CMOS logic and wide operating voltage range.
The SN74HC74NG4 is designed to operate within a broad temperature range and is suitable for various digital logic applications, including signal processing, clock division, and toggle switch implementations.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V |
| VIH High-Level Input Voltage (VCC = 2 V) | 1.5 | V | ||
| VIH High-Level Input Voltage (VCC = 4.5 V) | 3.15 | V | ||
| VIH High-Level Input Voltage (VCC = 6 V) | 4.2 | V | ||
| VIL Low-Level Input Voltage (VCC = 2 V) | 0.5 | V | ||
| VIL Low-Level Input Voltage (VCC = 4.5 V) | 1.35 | V | ||
| VIL Low-Level Input Voltage (VCC = 6 V) | 1.8 | V | ||
| TA Operating Free-Air Temperature | -40 | 85 | °C | |
| fmax Clock Frequency (VCC = 2 V) | 6 | 10 | MHz | |
| fmax Clock Frequency (VCC = 4.5 V) | 31 | 50 | MHz | |
| fmax Clock Frequency (VCC = 6 V) | 36 | 60 | MHz | |
| tpd Propagation Delay (VCC = 6 V, CL = 50 pF) | 30 | ns | ||
| Pins | 14 | |||
| Package | PDIP, SOIC, SSOP, TSSOP |
Key Features
- Buffered Inputs: Ensures stable input signals.
- Wide Operating Voltage Range: From 2 V to 6 V, making it versatile for various applications.
- Wide Operating Temperature Range: From -40°C to +85°C, suitable for a broad range of environmental conditions.
- High Fanout Capability: Supports up to 10 LSTTL loads.
- Power Reduction: Significant power reduction compared to LSTTL logic ICs.
- Asynchronous Preset and Clear Pins: Each flip-flop has asynchronous preset and clear pins for flexible control.
Applications
- Convert a Momentary Switch to a Toggle Switch: Useful in applications requiring a toggle function from a momentary input.
- Divide a Clock Signal: Can be used to divide clock signals by 2 or 4, which is common in digital timing circuits.
- General Digital Logic Applications: Suitable for various digital logic circuits requiring flip-flop functionality.
Q & A
- What is the SN74HC74NG4?
The SN74HC74NG4 is a dual D-type positive-edge-triggered flip-flop integrated circuit produced by Texas Instruments.
- What is the operating voltage range of the SN74HC74NG4?
The operating voltage range is from 2 V to 6 V.
- What is the operating temperature range of the SN74HC74NG4?
The operating temperature range is from -40°C to +85°C.
- How many flip-flops does the SN74HC74NG4 contain?
The device contains two independent D-type positive-edge-triggered flip-flops.
- What is the maximum clock frequency of the SN74HC74NG4 at 6 V?
The maximum clock frequency at 6 V is 60 MHz.
- What is the propagation delay of the SN74HC74NG4 at 6 V with a 50 pF load?
The propagation delay is approximately 30 ns.
- What types of packages are available for the SN74HC74NG4?
The device is available in PDIP, SOIC, SSOP, and TSSOP packages.
- What are some common applications of the SN74HC74NG4?
Common applications include converting a momentary switch to a toggle switch and dividing clock signals.
- Does the SN74HC74NG4 support fanout to LSTTL loads?
Yes, it supports fanout up to 10 LSTTL loads.
- Is the SN74HC74NG4 RoHS compliant?
Yes, the device is RoHS compliant and free from Sb/Br.
