Overview
The 74HC137DB118 is a 3-to-8 line decoder and demultiplexer integrated circuit produced by NXP Semiconductors, now part of Nexperia. This device is designed to decode three binary weighted address inputs (A0, A1, and A2) into eight mutually exclusive outputs (Y0 to Y7). It features a latch enable (LE) and two output enable inputs (E1 and E2), allowing for flexible control over the output states.
The 74HC137DB118 is packaged in a 16-lead Small Outline Package (SO16) and is suitable for a wide range of applications requiring decoding and demultiplexing functions.
Key Specifications
| Parameter | Conditions | Min | Typ | Max |
|---|---|---|---|---|
| VCC Supply Voltage | 2.0 V | 6.0 V | ||
| VI Input Voltage | 0 V | VCC | ||
| VO Output Voltage | 0 V | VCC | ||
| Tamb Ambient Temperature | -40 °C | +125 °C | ||
| VIH HIGH-level Input Voltage | VCC = 2.0 V | 1.5 V | 1.2 V | 1.5 V |
| VIH HIGH-level Input Voltage | VCC = 4.5 V | 3.15 V | 2.4 V | 3.15 V |
| VIH HIGH-level Input Voltage | VCC = 6.0 V | 4.2 V | 3.2 V | 4.2 V |
| VIL LOW-level Input Voltage | VCC = 2.0 V | 0.8 V | 0.5 V | 0.5 V |
| VIL LOW-level Input Voltage | VCC = 4.5 V | 2.1 V | 1.35 V | 1.35 V |
| VIL LOW-level Input Voltage | VCC = 6.0 V | 2.8 V | 1.8 V | 1.8 V |
| ICC Supply Current | VI = VCC or GND; IO = 0 A; VCC = 6.0 V | 8.0 μA | ||
| CI Input Capacitance | 3.5 pF |
Key Features
- Combines 3-to-8 decoder with 3-bit latch: Allows for both decoding and latching functions in a single device.
- Multiple input enable for easy expansion or independent controls: Features a latch enable (LE) and two output enable inputs (E1 and E2) for flexible control.
- Active LOW mutually exclusive outputs: Ensures that only one output is active at a time.
- Wide supply voltage range from 2.0 to 6.0 V: Compatible with various voltage levels.
- CMOS low power dissipation: Minimizes power consumption.
- High noise immunity: Provides robust performance in noisy environments.
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B: Ensures reliable operation.
- ESD protection: Complies with ANSI/ESDA/JEDEC JS-001 class 2 (exceeds 2000 V) and ANSI/ESDA/JEDEC JS-002 class C3 (exceeds 1000 V).
- Specified from -40 °C to +125 °C: Operates across a wide temperature range.
Applications
- Digital Systems: Used in various digital systems requiring decoding and demultiplexing functions.
- Embedded Systems: Suitable for embedded systems where space and power efficiency are crucial.
- Industrial Automation: Applied in industrial automation for controlling and monitoring systems.
- Consumer Electronics: Found in consumer electronics such as TVs, audio equipment, and other digital devices.
- Automotive Systems: Used in automotive systems for control and monitoring functions.
Q & A
- What is the primary function of the 74HC137DB118?
The primary function is to decode three binary weighted address inputs into eight mutually exclusive outputs and to act as a demultiplexer with address latches.
- What is the supply voltage range for the 74HC137DB118?
The supply voltage range is from 2.0 V to 6.0 V.
- What are the key enable inputs on the 74HC137DB118?
The key enable inputs include a latch enable (LE) and two output enable inputs (E1 and E2).
- How does the latch function work on the 74HC137DB118?
A LOW on LE causes the device to act as an active LOW decoder, and a LOW-to-HIGH transition on LE stores the data present before the transition in the latches.
- What is the operating temperature range for the 74HC137DB118?
The operating temperature range is from -40 °C to +125 °C.
- Does the 74HC137DB118 have ESD protection?
Yes, it complies with ANSI/ESDA/JEDEC JS-001 class 2 (exceeds 2000 V) and ANSI/ESDA/JEDEC JS-002 class C3 (exceeds 1000 V).
- What is the input capacitance of the 74HC137DB118?
The input capacitance is 3.5 pF.
- Can the 74HC137DB118 be used in industrial automation?
Yes, it is suitable for industrial automation due to its robust performance and wide operating temperature range.
- How many outputs does the 74HC137DB118 have?
The device has eight mutually exclusive outputs (Y0 to Y7).
- What package type is the 74HC137DB118 available in?
The 74HC137DB118 is available in a 16-lead Small Outline Package (SO16).
