Low-Voltage 3-to-8 Line Decoder with 5-V Tolerant Inputs and Outputs The TC74LCX138FN is a low-voltage CMOS 3-to-8 line decoder/demultiplexer manufactured by Toshiba. Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Supply Voltage (VCC):** 2.0V to 3.6V (Low-voltage operation)
- **Input Voltage (VI):** 0V to VCC
- **Output Voltage (VO):** 0V to VCC
- **Operating Temperature Range:** -40°C to +85°C
- **Propagation Delay (tpd):** 5.5 ns (max) at 3.3V
- **Input Capacitance (CI):** 5 pF (typ)
- **Output Current (IO):** ±24 mA (max)
- **Package Type:** 16-pin Plastic SOP (FN)
### **Descriptions:**
- The TC74LCX138FN is a high-speed, low-power decoder/demultiplexer designed for 2.0V to 3.6V operation.
- It features three binary select inputs (A0, A1, A2) and three enable inputs (E1, E2, E3) to control the decoding function.
- The device provides eight active-low outputs (Y0-Y7) based on the input combination.
### **Features:**
- **Low-Voltage Operation:** Compatible with 2.0V to 3.6V systems.
- **High-Speed Performance:** tpd = 5.5 ns (max) at 3.3V.
- **Low Power Consumption:** ICC = 10 μA (max) at standby.
- **3-to-8 Line Decoding:** Converts 3-bit binary inputs to one of eight outputs.
- **Demultiplexing Capability:** Can function as a 1-to-8 demultiplexer.
- **TTL-Compatible Inputs:** Supports 5V-tolerant inputs.
- **Balanced Propagation Delays:** Ensures stable signal timing.
- **ESD Protection:** Exceeds 2000V (HBM).
This device is suitable for memory addressing, data routing, and logic-level conversion in low-voltage digital systems.
