Overview
The CD74HC4514M96 is a high-speed silicon gate device produced by Texas Instruments. It combines a 4-bit strobed latch and a 4-to-16 line decoder/demultiplexer. This device is part of the HC (High-Speed CMOS) logic family, known for its balanced propagation delay and transition times, as well as significant power reduction compared to LSTTL logic ICs. The CD74HC4514M96 operates over a wide temperature range of -55°C to 125°C, making it suitable for various environmental conditions.
Key Specifications
| Parameter | Symbol | Test Conditions | Units | Min | Max | |
|---|---|---|---|---|---|---|
| DC Supply Voltage | VCC | - | V | -0.5 | - | 7 |
| Input Diode Current | IIK | VI < -0.5V or VI > VCC + 0.5V | mA | -20 | - | 20 |
| High Level Output Voltage (CMOS Loads) | VOH | VCC = 2V, 4.5V, 6V | V | 1.9, 4.4, 5.9 | - | - |
| Low Level Output Voltage (CMOS Loads) | VOL | VCC = 2V, 4.5V, 6V | V | 0.1, 0.1, 0.1 | - | - |
| Propagation Delay (Select to Outputs) | tPHL, tPLH | VCC = 2V, 4.5V, 6V; CL = 50pF | ns | 275, 55, 47 | - | 345, 69, 71 |
| Latch Enable Pulse Width | tW | VCC = 2V, 4.5V, 6V | ns | 75, 30, 35 | - | 110, 22, 19 |
| Select to Latch Enable Set-Up Time | tSU | VCC = 2V, 4.5V, 6V | ns | 100, 20, 17 | - | 125, 25, 21 |
| Select to Latch Enable Hold Time | tH | VCC = 2V, 4.5V, 6V | ns | 0, 0, 0 | - | 0, 0, 0 |
| Operating Temperature Range | - | - | °C | -55 | - | 125 |
Key Features
- Multifunction Capability: The device functions as both a binary to 1-of-16 decoder and a 1-to-16 line demultiplexer.
- High-Speed Operation: Part of the HC logic family, offering balanced propagation delay and transition times.
- Wide Operating Temperature Range: Operates from -55°C to 125°C, making it suitable for a variety of environmental conditions.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs.
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V.
- Latch Enable Functionality: The output follows changes in the inputs when Latch Enable (LE) is high, and remains isolated from input changes when LE is low.
- Cascading Capability: The enable input (E) can also serve as a chip select when these devices are cascaded.
Applications
- Decoder and Demultiplexer Circuits: Ideal for applications requiring the decoding of binary data into one of sixteen possible outputs or demultiplexing data to one of sixteen lines.
- Digital Switching Systems: Suitable for use in digital switching systems where high-speed and low power consumption are critical.
- Embedded Systems: Can be used in embedded systems that require efficient and reliable decoding and demultiplexing functions.
- Industrial Control Systems: Applicable in industrial control systems due to its wide operating temperature range and high noise immunity.
Q & A
- What is the primary function of the CD74HC4514M96?
The primary function is to act as a 4-bit strobed latch and a 4-to-16 line decoder/demultiplexer.
- What is the operating temperature range of the CD74HC4514M96?
The device operates from -55°C to 125°C.
- What are the typical propagation delays for the CD74HC4514M96?
The propagation delays are approximately 275ns at VCC=2V, 55ns at VCC=4.5V, and 47ns at VCC=6V for select to outputs with CL=50pF load.
- How does the Latch Enable (LE) input affect the output?
When LE is high, the output follows changes in the inputs. When LE is low, the output is isolated from changes in the input and remains at its previous level.
- What is the significance of the enable input (E) in cascading devices?
The enable input (E) serves as a chip select when these devices are cascaded.
- What is the fanout capability of the CD74HC4514M96?
The device can drive up to 10 LSTTL loads.
- What are the package options available for the CD74HC4514M96?
The device is available in SOIC (Small Outline Integrated Circuit) packages.
- Is the CD74HC4514M96 RoHS compliant?
Yes, the CD74HC4514M96 is RoHS compliant.
- What is the typical quiescent device current for the CD74HC4514M96?
The typical quiescent device current is around 8µA at VCC=5V.
- How does the device handle noise immunity?
The device has high noise immunity with NIL = 30%, NIH = 30% of VCC at VCC = 5V.
