XBLW SN74LS138N(XBLW)

The SN74LS138 is a decodes three binary weighted address inputs(A0, A1 and A2) to eight mutually exclusive outputs (Y0 to Y7). The device features three enable inputs (E1, E2 and E3). Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH. This multiple enable function allows easy parallel expansion to a 1- of- 32(5 to 32 lines) decoder with just four SN74LS138ICs and one inverter. The SN74LS138 can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

• Wide operating voltage range: 2 V to 6 V
• Demultiplexing capability
• Multiple input enable for easy expansion
• Ideal for memory chip select decoding
• Active LOW mutually exclusive outputs
• Specified from -20℃ to +85℃
• Packaging information: DIP-16/SOP-16/TSSOP-16

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