74VHC139 - STMicroelectronics

74VHC139 DUAL 2 TO 4 DECODER/DEMULTIPLEXER

The 74VHC139 is an advanced high-speed - O teCMOS DUAL 2 TO 4 LINE DECODER/ ) leDEMULTIPLEXER fabricated with sub-micron t(s osilicon gate and double-layer metal wiring C2MOS stechnology. c bThe active low enable input can be used for gating u Oor as a data input for demultiplexing applications. rod -While the enable input is held high, all four outputs P t(.

Features

own protection is provided on all inputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. ObsOoblestoelePteroducFigure 1: Pin Connection And IEC Logic Symbols November 2004 Rev. 4 1/12 74VHC139 Figure 2: Input Equivalent Circuit Table 2: Pin Description PIN N° 1, 15 2, 3 4, 5, 6, 7 12, 11, 10, 9 14, 13 8 16 SYMBOL NAME AND FUNCTION 1G, 2G 1A, 1B 1Y0 to 1Y3 2Y0 to 2Y3 .