Overview
The SN74AHC138DGVR is a 3-line to 8-line decoder/demultiplexer integrated circuit produced by Texas Instruments. This device is specifically designed for high-performance memory-decoding and data-routing applications that require very short propagation delay times. It is particularly useful in high-speed memory systems where it can minimize the effects of system decoding, ensuring that the delay times introduced by the decoders are negligible when used with fast enable circuits and high-speed memories.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | TVSOP-16 | |
| Operating Voltage Range | 2 V to 5.5 V | V |
| Operating Temperature Range | -40 to 85 °C | °C |
| Propagation Delay Time (tpd) | Typical 15 ns (at VCC = 5 V) | ns |
| Output Drive Current | ±4 mA (at VCC = 5 V) | mA |
| Input Current | Maximum 1 µA | µA |
| Power Consumption (ICC) | Maximum 80 µA | µA |
| Output Load Capability | Up to 10 LSTTL loads | |
| ESD Protection | 2000V Human-Body Model, 1000V Charged-Device Model | V |
Key Features
- Targeted specifically for high-speed memory decoders and data-transmission systems.
- Wide operating voltage range (2 V to 5.5 V).
- Outputs can drive up to 10 LSTTL loads.
- Low power consumption, with a maximum ICC of 80 µA.
- Typical propagation delay time of 15 ns.
- ±4-mA output drive at 5 V.
- Low input current of 1-µA maximum.
- Active low outputs (selected output is low).
- Incorporate three enable inputs to simplify cascading or data reception.
- ESD protection exceeds 2000V Human-Body Model and 1000V Charged-Device Model.
Applications
- LED Displays
- Servers
- White Goods
- Power Infrastructure
- Building Automation
- Factory Automation
The SN74AHC138DGVR is versatile and can be used in various high-performance memory and data-routing applications where fast decoding and minimal system delay are critical.
Q & A
- What is the primary function of the SN74AHC138DGVR?
The SN74AHC138DGVR is a 3-line to 8-line decoder/demultiplexer designed for high-performance memory-decoding and data-routing applications.
- What is the operating voltage range of the SN74AHC138DGVR?
The operating voltage range is 2 V to 5.5 V.
- What is the typical propagation delay time of the SN74AHC138DGVR?
The typical propagation delay time is 15 ns at VCC = 5 V.
- How many LSTTL loads can the outputs of the SN74AHC138DGVR drive?
The outputs can drive up to 10 LSTTL loads.
- What is the maximum power consumption of the SN74AHC138DGVR?
The maximum power consumption is 80 µA.
- Does the SN74AHC138DGVR have ESD protection?
Yes, it exceeds 2000V Human-Body Model and 1000V Charged-Device Model.
- What are the key applications of the SN74AHC138DGVR?
Key applications include LED displays, servers, white goods, power infrastructure, building automation, and factory automation.
- How many enable inputs does the SN74AHC138DGVR have?
The device incorporates three enable inputs to simplify cascading or data reception.
- What is the package type of the SN74AHC138DGVR?
The package type is TVSOP-16.
- What is the operating temperature range of the SN74AHC138DGVR?
The operating temperature range is -40 to 85 °C.
