Overview
The 74LVC138APW is a 3-to-8 line decoder/demultiplexer integrated circuit produced by Nexperia USA Inc. This device decodes three binary weighted address inputs (A0, A1, and A2) to eight mutually exclusive outputs (Y0 to Y7). It features three enable inputs (E1, E2, and E3), allowing for easy parallel expansion and use as a demultiplexer. The 74LVC138APW is designed for low power consumption and can operate in a wide supply voltage range from 1.2 V to 3.6 V, making it suitable for various electronic designs, including mixed 3.3 V and 5 V environments.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC138APW | 1.2 - 3.6 | CMOS/LVTTL | ± 24 | 2.7 | Low | -40 ~ 125 | 126 | 4.8 | 55.9 | TSSOP16 |
Key Features
- Decodes three binary weighted address inputs to eight mutually exclusive outputs
- Three enable inputs (E1, E2, and E3) for easy parallel expansion and demultiplexing capability
- Wide supply voltage range from 1.2 V to 3.6 V
- CMOS low power consumption
- Direct interface with TTL levels
- Schmitt-trigger action at all inputs for tolerance of slower input rise and fall times
- Overvoltage tolerant inputs to 5.5 V
- Output drive capability suitable for 50 Ω transmission lines at 125 °C
- Complies with JEDEC standards (JESD8-7A, JESD8-5A, JESD8-C/JESD36)
- ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Applications
- Memory chip select decoding
- Mixed 3.3 V and 5 V environments as a translator
- Automotive and industrial applications
- Power, computing, consumer, mobile, and wearable devices
Q & A
- What is the primary function of the 74LVC138APW?
The primary function is to decode three binary weighted address inputs to eight mutually exclusive outputs.
- What is the supply voltage range for the 74LVC138APW?
The supply voltage range is from 1.2 V to 3.6 V.
- How many enable inputs does the 74LVC138APW have?
The device has three enable inputs (E1, E2, and E3).
- What is the output drive capability of the 74LVC138APW?
The output drive capability is ± 24 mA, suitable for 50 Ω transmission lines at 125 °C.
- Is the 74LVC138APW ESD protected?
- What package type is the 74LVC138APW available in?
The device is available in a TSSOP16 package.
- Can the 74LVC138APW be used in mixed voltage environments?
- What are the operating temperature ranges for the 74LVC138APW?
The device operates from -40 °C to +125 °C.
- Does the 74LVC138APW comply with any specific standards?
- What is the propagation delay of the 74LVC138APW?
The propagation delay is approximately 2.7 ns.
