The 74LS139 is a high speed Dual 1-of-4 Decoder/De-multiplexer. The device has two independent decoders, each accepting two inputs and providing four mutually exclusive active LOW Outputs. Each decoder has an active LOW Enable input which can be used as a data input for a 4-output demultiplexer. Each half of the LS139 can be used as a function generator providing all four minterms of two variables. The LS139 is fabricated with the Schottky barrier diode process for high speed and is completely compatible with all Motorola TTL families.

The CD4040 is a 12-stage ripple carry binary counter. The counters are advanced one count on the negative transition of each clock pulse. The counters are reset to the zero state by a logical 1 at the reset input independent of the clock.

• CD4027 Dual JK Flip Flop Package IC which operates at medium speed of 16 MHz typically with 10V supply
• Voltage range of 3.0V to 15V
• Static Flip-Flop Operation
• High noise immunity of 0.45 VDD(typ.)
• Set and Reset capability
• TTL compatible
• Low power of 50 nW (typ.)
• Input Rise/Fall time at 5V: 45us
• Maximum and minimum Input Voltage is 2 V and 0.8 V

• Inverting IC that can convert High logic level to Low level
• High source and Sink Current as it has the capability of driving 2 TTL Loads at 5V over full temperature range.
• 100% Tested for Quiescent Current at 20 V
• Maximum Input Current of 1A at 18 V Over Full Package Temperature Range; 100 nA at 18 V and 25C
• 5-V, 10-V, and 15-V Parametric Ratings
• It is available in 16 pin packages of PDIP, SOIC, TSSOP, SO.
• Special input protection to protect inputs against static discharges.

The CD4050 hex buffers are monolithic complementary MOS (CMOS) integrated circuits constructed with N- and P-channel enhancement mode transistors. These devices feature logic level conversion using only one supply voltage (VDD). The input signal high level (VIH) can exceed the VDD supply voltage when these devices are used for logic level conversions. These devices are intended for use as hex buffers, CMOS to DTL/ TTL converters, or as CMOS current drivers, and at VDD = 5.0V, they can drive directly two DTL/TTL loads over the full operating temperature range.