Overview
The 74HC4514DB118, produced by NXP USA Inc., is a 4-to-16 line decoder/demultiplexer integrated circuit. This device features four binary weighted address inputs (A0 to A3), input latches, a latch enable input (LE), an enable input (E), and 16 outputs (Q0 to Q15). It is designed to decode 4 binary-coded inputs into 16 mutually-exclusive outputs, making it versatile for various digital applications. The device can operate in both decoder and demultiplexer modes, with the enable input E controlling the output states. The 74HC4514DB118 is part of the 74HC series, known for its CMOS low power dissipation and high noise immunity.
Key Specifications
| Parameter | Conditions | Min | Typ | Max |
|---|---|---|---|---|
| VCC Supply Voltage | 2.0 V | 6.0 V | ||
| VIH HIGH-level input voltage | VCC = 2.0 V | 1.5 V | 1.5 V | |
| VIH HIGH-level input voltage | VCC = 4.5 V | 3.15 V | 3.15 V | |
| VIL LOW-level input voltage | VCC = 2.0 V | 0.5 V | 0.8 V | |
| VIL LOW-level input voltage | VCC = 4.5 V | 1.35 V | 2.1 V | |
| VOH HIGH-level output voltage | IO = -20 μA; VCC = 4.5 V | 4.4 V | 4.5 V | |
| Operating Temperature | -40 °C | +125 °C | ||
| ESD Protection | HBM | > 2000 V | ||
| ESD Protection | CDM | > 1000 V |
Key Features
- Wide supply voltage range from 2.0 V to 6.0 V
- CMOS low power dissipation
- High noise immunity
- Input levels: CMOS level for 74HC4514 and TTL level for 74HCT4514
- 16-line demultiplexing capability
- Decodes 4 binary-coded inputs into 16 mutually-exclusive outputs
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
- Complies with JEDEC standards (JESD8C and JESD7A)
- ESD protection: HBM exceeds 2000 V and CDM exceeds 1000 V
Applications
- Digital multiplexing
- Address decoding
- Hexadecimal/BCD decoding
Q & A
- What is the primary function of the 74HC4514DB118?
The primary function of the 74HC4514DB118 is to act as a 4-to-16 line decoder/demultiplexer with input latches.
- What is the voltage range for the VCC supply?
The VCC supply voltage range is from 2.0 V to 6.0 V.
- What types of input levels does the 74HC4514DB118 support?
The 74HC4514 supports CMOS input levels, while the 74HCT4514 supports TTL input levels.
- How many outputs does the 74HC4514DB118 have?
The device has 16 outputs (Q0 to Q15).
- What is the purpose of the latch enable input (LE) and the enable input (E)?
The latch enable input (LE) controls the latching of the input data, and the enable input (E) controls the output states, with E LOW enabling the selected output and E HIGH disabling all outputs.
- What are the ESD protection levels for the 74HC4514DB118?
The device has ESD protection exceeding 2000 V for HBM and 1000 V for CDM.
- What are the operating temperature ranges for the 74HC4514DB118?
The device operates from -40 °C to +125 °C.
- What are some common applications of the 74HC4514DB118?
Common applications include digital multiplexing, address decoding, and hexadecimal/BCD decoding.
- Does the 74HC4514DB118 comply with any industry standards?
Yes, it complies with JEDEC standards (JESD8C and JESD7A).
- What is the significance of the input clamp diodes in the 74HC4514DB118?
The input clamp diodes allow the use of current limiting resistors to interface inputs to voltages in excess of VCC.
