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54LVTH162373 Datasheet(PDF) 1 Page - Maxwell Technologies |
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54LVTH162373 Datasheet(HTML) 1 Page - Maxwell Technologies |
1 / 10 page ![]() 1 All data sheets are subject to change without notice (858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com 3.3V 16-Bit Transparent 54LVTH162373 ©2001 Maxwell Technologies All rights reserved. D-Type Latches 12.19.01 Rev 1 1000596 FEATURES: • 3.3V low voltage advanced BiCMOS technology (LVT) 16- bit transparent D-type latches with 3-state outputs • Total dose hardness: - > 100 krad (Si), depending upon space mission • Excellent Single Event Effect: - SEL TH: No LU > 119 MeV/mg/cm 2 • Package: 48 pin RAD-PAK® flat package • Operating temperature range: - 55 to 125°C • Distributed V CC and GND pin configuration minimizes high- speed switching noise • Supports mixed-mode signal operation - 5V input and output voltages with 3.3V V CC • Supports unregulated battery operation down to 2.7V • Supports live insertion • Bus-hold data inputs eliminate the need for external pullup resistors DESCRIPTION: Maxwell Technologies’ 54LVTH162373 16-bit transparent D- type latches with 3-state output features a greater than 100 krad (Si) total dose tolerance, depending upon space mission. The 54LVTH162373 is designed for low voltage (3.3V) V CC operation, but with the capability to provide a TTL interface to a 5V system environment. It is suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working reg- isters. The 54LVTH162373 can be used as two 8-bit latches or one 16-bit latch. When the latch-enable (LE) input is low, the Q output are latched at the levels set up at the data (D) inputs. When LE is high, the Q outputs follow the D inputs. A buffered output-enable (OE) input can be used to place the eight out- puts in either a normal logic state or a high impedance state. In the high impedance state, the outputs neither load nor drive the bus lines significantly. The high impedance state and the increased drive provide the capability to drive bus lines with- out the need for interface or pullup components. OE does not affect internal operations of the latch. Old data can be retained or new data can be entered while the outputs are in the high impedance state. Maxwell Technologies' patented RAD-PAK® packaging technol- ogy incorporates radiation shielding in the microcircuit pack- age. It eliminates the need for box shielding while providing the required radiation shielding for a lifetime in orbit or space mission. In a GEO orbit, RAD-PAK provides greater than 100 krad (Si) radiation dose tolerance. This product is available with screening up to Class S. 148 24 25 1LE 1D1 1D2 GND 1D3 1D4 VCC 1D5 1D6 GND 1D7 1D8 2D1 2D2 GND 2D3 2D4 VCC 2D5 2D6 GND 2D7 2D8 2LE 2OE 2Q8 2Q7 GND 2Q6 2Q5 VCC 2Q4 2Q3 GND 2Q2 2Q1 1Q8 1Q7 GND 1Q6 1Q5 VCC 1Q4 1Q3 GND 1Q2 1Q1 1OE 1OE/2OE 1LE/2LE 1D1/2D1 C1 1D 1/24 48/25 47/36 2/13 1Q1/2Q1 To Seven Other Channels Logic Diagram (PositiveLogic) 54LVTH162373 Logic Diagram |
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