器件名称:
74LV139
功能描述:
Dual 2-to-4 line decoder/demultiplexer
文件大小:
111.83KB 共12页
简 介:
INTEGRATED CIRCUITS 74LV139 Dual 2-to-4 line decoder/demultiplexer Product specification Supersedes data of 1997 Feb 12 IC24 Data Handbook 1998 Apr 28 Philips Semiconductors Philips Semiconductors Product specification Dual 2-to-4 line decoder/demultiplexer 74LV139 FEATURES Wide operating voltage: 1.0 to 5.5 V Optimized for low voltage applications: 1.0 to 3.6 V Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, Typical VOHV (output VOH undershoot) > 2 V at VCC = 3.3 V, Demultiplexing capability Two independent 2-to-4 decoders Multifunction capability Active LOW mutually exclusive outputs Output capability: standard ICC category: MSI QUICK REFERENCE DATA GND = 0 V; Tamb = 25°C; tr = tf ≤ 2.5 ns SYMBOL tPHL/tPLH CI CPD PARAMETER Propagation delay nAn to nYn, nE to nYn Input capacitance Power dissipation capacitance per multiplexer Tamb = 25°C Tamb = 25°C APPLICATIONS Memory decoding or data-routing Code conversion DESCRIPTION The 74LV139 is a low-voltage Si-gate CMOS device that is pin and function compatible with 74HC/HCT139. The 74LV139 is a dual 2-to-4 line decoder/demultiplexer. This device has two independent decoders, each accepting two binary weighted inputs (nA0 and nA1) and providing four mutually exclusive active LOW outputs (nY0 to nY3). Each decoder has an active LOW enable input (nE). When nE is HIGH, every output is forced HIGH. The enable can be used as the data input f……