器件名称:
74HC373
功能描述:
Octal Transparent D-type Latches W ith 3-State Outputs
文件大小:
415.05KB 共6页
简 介:
74HC373 GENERAL DESCRIPTION Octal Transparent D-type Latches W ith 3-State Outputs 74HC373 is fabricated with high-speed silicon gate CMOS technology. It has the high noise immunity and low power consumption of standard CMOS integrated circuits. The eight latches in 74HC373 devices are transparent D-type latches. While the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputs are latched at the levels that were set up at the D inputs. An output-enable input (OE) makes the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high- impedance state and increased drive provide the capability to drive bus lines without interface or pull-up components. OE does not affect the internal operations of the latches. Old data can be retained or new data can be entered while the outputs are off. These 8-bit latches with 3-state outputs are designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bi-directional bus drivers, and working registers. FEATURES Wide operating supply voltage range: 2-6V 8 high-current latches with 3-state outputs in a single package Full parallel access for loading Low input current: 1A (Max.) Low power consumption: 80A (Max.) LOGIC DIAGRAM 1Q (2) OE (1) 2……
