The MC74LVQ138 is a high performance, 1–of–8 decoder/ demultiplexer operating from a 2.7 to 3.6V supply. High impedance TTL compatible inputs significantly reduce current loading to input drivers while TTL compatible outputs offer improved switching noise performance. The MC74LVQ138 is suitable for memory address decoding and other TTL level bus oriented applications.
The MC74LVQ138 is a high‑performance 1‑of‑8 decoder/demultiplexer that operates from a 2.7 V to 3.6 V supply. It features three binary‑weighted address inputs and three enable inputs, delivering eight mutually exclusive active‑LOW outputs. The device is suited for memory address decoding and other TTL‑level bus applications.
Key electrical characteristics include a supply voltage range of 2.0 V to 3.6 V, 12 mA output drive capability, and low static supply current. Dynamic switching performance is guaranteed with typical propagation delays around 9 ns and low‑noise operation.
| Supply Voltage (V) | 2.0 – 3.6 |
|---|---|
| Output Drive Current | 12 mA |
| Supply Current | 200 mA |
| Storage Temperature Range | -65 °C to +150 °C |
| Input Capacitance (CIN) | 45 pF |
| Power‑Dissipation Capacitance (Cpp) | 26 pF |
The device operates with a supply voltage from 2.0 V (minimum) up to 3.6 V (maximum).
It provides eight mutually exclusive active‑LOW outputs, labeled 00 through 07.
Each output can source or sink up to 12 mA.
The specified storage temperature range is –65 °C to +150 °C.