CD40192BPWR

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CD40192BPWR is a 2-input 8-bit priority encoder with the IC package type of PWR (Power Range). It is mainly used in the fields of digital couters and dividers, and most notably in control systems. The device is constructed with Schottky-TTL logic, which is a high-speed complementary MOS logic family consisting of Schottky diode-Clamped N- and P-channel devices. Besides, CD40192BPWR also integrates advanced CMOS logic techniques, such as full rail-to-rail operation, high noise immunity, low power consumption and high speed performance.

CD40192BPWR works on the principle of encoding any two of eight inputs into a 3-bit code. The highest priority is assigned to the 2 left-most inputs from the package view, and the lowest priority to the 2 right-most inputs. For example, if A and D are the highest priority inputs, E and H are the lowest priority inputs, and G and H are the second highest priority inputs. Then the encoding outputs of CD40192BPWR will be 001 (A&D), 110 (G&H) and 111 (E&H) respectively.

The eight priority inputs are applied to 8 three-state bus drivers, with each driver providing a programmable logic function. All the bus drivers are controlled by the two control signals, namely CS and CD, which sets the direction (ascending or descending) of the serial sequence. The control signals CD and CS are connected to the serial inputs of the CD40192BPWR’s internal shift register. When enabled, the CD40192BPWR will start to scan all the inputs, encode and output the resulting 3-bit code.

In addition, CD40192BPWR also has two input enable ports, namely EN and DIS. The EN port is capable of enabling the device externally, while the DIS port halts the status of all the eight outputs. The product is manufactured by Texas Instruments and is available in an 8-pin SOIC package.

One of the most common applications of CD40192BPWR is an alarm system, where it is used to detect the movement of a person in the room. The eight priority inputs are connected to eight infra-red sensors. When any two of the input sensors detect any changes in the infra-red signal, the device will encode and output the corresponding 3-bit code. The encoded signals are then sent to the alarm and it is triggered if any two of the sensors detect motion. CD40192BPWR can also be used in digital counters and dividers, where it can detect and count the number of inputs applied.

Overall, CD40192BPWR is a highly useful device that is able to encode up to 8 inputs into 3-bit codes, and is most commonly used in alarm and control systems, as well as in digital counters and dividers. With its advanced CMOS logic techniques and its compact SOIC package, CD40192BPWR has become an essential tool in the field of digital counters, dividers and other logic circuits.

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