Overview
The SN74LVC138APWT, produced by Texas Instruments, is a high-performance decoder/demultiplexer designed for applications requiring very short propagation delay times. This device is particularly suited for high-performance memory-decoding or data-routing applications. It minimizes the effects of system decoding in high-performance memory systems and can be used with fast enable circuits to ensure that the delay times are negligible compared to the typical access time of the memory.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-pin TSSOP (PW) |
| Operating Temperature Range | -40°C to 85°C |
| Supply Voltage Range | 1.65 V to 3.6 V |
| Input Voltage Range | Up to 5.5 V |
| Maximum Propagation Delay | 5.8 ns at 3.3 V |
| Output Drive (IOL/IOH) | 24/-24 mA |
| Latch-Up Performance | Exceeds 250 mA per JESD 17 |
Key Features
- Operate from 1.65 V to 3.6 V
- Inputs accept voltages up to 5.5 V
- Maximum propagation delay of 5.8 ns at 3.3 V
- Typical output ground bounce < 0.8 V at VCC = 3.3 V, TA = 25°C
- Typical output overshoot > 2 V at VCC = 3.3 V, TA = 25°C
- Latch-up performance exceeds 250 mA per JESD 17
Applications
The SN74LVC138APWT is ideal for high-performance memory-decoding or data-routing applications. It is particularly useful in high-speed memory systems where minimizing system decoding delays is crucial. Other applications include fast enable circuits and any system requiring short propagation delay times.
Q & A
- What is the primary function of the SN74LVC138APWT?
The SN74LVC138APWT is a decoder/demultiplexer designed for high-performance memory-decoding or data-routing applications. - What is the operating temperature range of the SN74LVC138APWT?
The operating temperature range is -40°C to 85°C. - What is the supply voltage range for the SN74LVC138APWT?
The supply voltage range is from 1.65 V to 3.6 V. - What is the maximum propagation delay of the SN74LVC138APWT at 3.3 V?
The maximum propagation delay is 5.8 ns at 3.3 V. - What is the latch-up performance of the SN74LVC138APWT?
The latch-up performance exceeds 250 mA per JESD 17. - What type of package does the SN74LVC138APWT come in?
The device comes in a 16-pin TSSOP (PW) package. - What is the output drive capability of the SN74LVC138APWT?
The output drive capability is 24/-24 mA. - Can the inputs of the SN74LVC138APWT handle voltages higher than the supply voltage?
Yes, the inputs can accept voltages up to 5.5 V. - What are typical applications for the SN74LVC138APWT?
Typical applications include high-performance memory systems and fast enable circuits. - How does the SN74LVC138APWT minimize system decoding delays?
The device minimizes system decoding delays by ensuring that the delay times of the decoders and the enable time of the memory are less than the typical access time of the memory.
