Bipolar digital integrated circuits are integrated circuits (such as TTL, ECL) and
114 datasheet and unipolar integrated circuits (eg CMOS) two categories, each category also contains a series of different varieties.
TTL digital integrated circuits: This type of integrated circuit input stage and
114 price and output stage within the transistor structure are, are bipolar digital integrated circuits. The main series:
(1) 74 series: This is an early product, is still used, but is gradually being phased out.
(2) 74H Series: This is an improved 74 series, a high-speed TTL products. The NAND gate, the average transit time of 10ns or so, but the static power consumption of a larger circuit, the current use of the product less and
114 suppliers and less, is gradually phased out,
(3) 74S series: This is a TTL high-speed Schottky-type series. In this series, using the anti-saturation Schottky diodes, high speed, but less variety.
(4) 74LS Series: This is the current TTL type of main product lines. Varieties and manufacturers are very large. Relatively high cost performance, the current application in small and medium-scale circuits is very common.
(5) 74ALS series: This is an advanced low power Schottky series. 74LS series are the successor products, speed (typically 4 ns), power (typically 1 mW), and other aspects greatly improved, but the price is relatively high.
(6) 74AS Series: This is the 74S series of follow-up products, in particular speed (typically 1.5 ns) have improved significantly, also known as advanced high-speed Schottky series.
CMOS integrated circuits is the use of NMOS and PMOS cleverly combined into a circuit, is a form of micro-power digital integrated circuits. Main series:
(1) Standard 4000B/4500B Series: This series is based on the U.S. series and RCAs CD4000B CD4500B series developed with the United States series and Motorolas MC14000B MC14500B Series products are completely compatible. The series features the largest supply voltage range (3 ~ 18 V), minimum power consumption, speed, low variety, low price, is the main applications of CMOS integrated circuits.
(2) 74HC Series: 54/74HC series is the standard high-speed CMOS logic family, and 74LS series with the same operating speed and low power consumption inherent in CMOS integrated circuits and power supply voltage Lang and wide around the features. 74HC is 74LS a replica of the same serial number, the last digits of the same model that the circuit logic, pinout compatible, in order to use 74HC 74LS provide a convenient alternative.
(3) 74AC Series: This series, also known as advanced CMOS integrated circuits, 54/74AC Series 74AS Series has the same operating speed and with the inherent low-power CMOS integrated circuits and power supply voltage range and wide characteristics.