器件名称: 74VHC138MTC
功能描述: 3-to-8 Decoder/Demultiplexer
文件大小: 65.66KB 共7页
简 介:74VHC138 3-to-8 Decoder/Demultiplexer
November 1992 Revised April 1999
74VHC138 3-to-8 Decoder/Demultiplexer
General Description
The VHC138 is an advanced high speed CMOS 3-to-8 decoder/demultiplexer fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. When the device is enabled, 3 binary select inputs (A0, A1 and A2) determine which one of the outputs (O0–O7) will go LOW. When enable input E3 is held LOW or either E1 or E2 is held HIGH, decoding function is inhibited and all outputs go HIGH. E3, E1 and E2 inputs are provided to ease cascade connection and for use as an address decoder for memory systems. An input protection circuit ensures that 0V to 7V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.
Features
s High Speed: tPD = 5.7ns (typ) at TA = 25°C s Low power dissipation: ICC = 4 A (max.) at TA = 25°C s High noise immunity: VNIH = VNIL = 28% VCC (min.) s Power down protection provided on all inputs s Pin and function compatible with 74HC138
Ordering Code:
Order Number 74VHC138M 74VHC138SJ 74VHC138MTC 74VHC138N Package Number M16A M16D MTC16 N16E Package Description 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Nar……
