TC74HC155AF(F) Toshiba

TC74HC155AP/AF/AFN TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74HC155AP,TC74HC155AF,TC74HC155AFN Dual 2-to-4 Line Decoder 3-to-8 Line Decoder Note: xxxFN (JEDEC SOP) is not available in Japan. The TC74HC155A is a high speed CMOS DUAL 2-to-4 LINE 2 TC74HC155AP DECODER fabricated with silicon gate C MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. It features dual 1-to-4 line demultiplexers with individual strobe input (1G and 2G), individual data inputs (1C and 2C) and common binary address inputs (A and B). When both decoders are enabled by the strobes, the inverted output of 1C data and non-inverted output of 2C data will be brought to the selected output pins of each section. A 1-to-8 line demultiplexer can be easily built up by providing TC74HC155AF a data signal to both the 1C and 2C inputs the output order will be 1Y3 (MSB), 1Y2, 1Y1, 1Y0, 2Y3, 2Y2, 2Y1, 2Y0 (LSB). This device can be used as a 2-to-4 line decoder or a 3-to-8 line decoder when 1C is held high and 2C is held low. All inputs are equipped with protection circuits against static discharge or transient excess voltage. Features High speed: t = 12 ns (typ.) at V = 5 V pd CC TC74HC155AFN Low power dissipation: I = 4 A (max) at Ta = 25C CC High noise immunity: V = V = 28% V (min) NIH NIL CC Output drive capability: 10 LSTTL loads Symmetrical output impedance: I = I = 4 mA (min) OH OL Balanced propagation delays: t t pLH pHL Wide operating voltage range: V (opr) = 2 to 6 V CC Pin and function compatible with 74LS155 Weight Pin Assignment DIP16-P-300-2.54A : 1.00 g (typ.) SOP16-P-300-1.27A : 0.18 g (typ.) SOL16-P-150-1.27 : 0.13 g (typ.) 1 2007-10-01 TC74HC155AP/AF/AFN IEC Logic Symbol Truth Table Inputs Outputs Inputs Outputs B A 1 1G C 1 Y0 1 Y1 1Y2 1Y3 B A 2G 2C 2 Y0 2 Y1 2Y2 2Y3 X X H X H H H H X X H X H H H H L L L H L H H H L L L L L H H H L H L H H L H H L H L L H L H H H L L H H H L H H L L L H H L H H H L H H H H L H H L L H H H L X X X L H H H H X X X H H H H H X: Dont care X: Dont care 2 2007-10-01