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| Item number: CIEN7-26826292 Manufacturer no.: SN74LS373N EAN/GTIN: n/a |
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![](/p.gif) | These 8-bit registers feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. The high-impedance 3-state and increased high-logic-level drive provide these registers with the capability of being connected directly to and driving the bus lines in a bus-organized system without need for interface or pullup components. These devices are particularly attractive for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
The eight latches of the ’LS373 and ’S373 are transparent D-type latches, meaning that while the enable (C or CLK) input is high, the Q outputs follow the data (D) inputs. When C or CLK is taken low, the output is latched at the level of the data that was set up.
The eight flip-flops of the ’LS374 and ’S374 are edge-triggered D-type flip-flops. On the positive transition of the clock, the Q outputs are set to the logic states that were set up at the D inputs.
Schmitt-trigger buffered inputs at the enable/clock lines of the ’S373 and ’S374 devices simplify system design as ac and dc noise rejection is improved by typically 400 mV due to the input hysteresis. A buffered output-control (OC) input can be used to place 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.
OC\ does not affect the internal operation of the latches or flip-flops. That is, the old data can be retained or new data can be entered, even while the outputs are off. More information: Weight & dimensions | Width | 26.92 mm | ![](/p.gif) | Depth | 6.6 mm | ![](/p.gif) | Height | 4.57 mm | ![](/p.gif) | Width (with pins) | 26.92 mm | ![](/p.gif) | Depth (with pins) | 10.92 mm | ![](/p.gif) | Height (with pins) | 8.26 mm | ![](/p.gif) | Package depth | 506 mm | ![](/p.gif) | Package width | 13.97 mm | ![](/p.gif) | Package height | 11.23 mm | Features | Type | Logic IC | ![](/p.gif) | Storage temperature (T-T) | -65 - 150 °C | ![](/p.gif) | Number of pins | 20 | ![](/p.gif) | Operating temperature (T-T) | 0 - 70 °C |
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