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PDF 54LVTH162244 Data sheet ( Hoja de datos )
| Número de pieza | 54LVTH162244 | |
| Descripción | 16-Bit Buffers/Drivers | |
| Fabricantes | Maxwell Technologies | |
| Logotipo |  |
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54LVTH162244
16-Bit Buffers/Drivers with
3-State Outputs
Logic Diagram
FEATURES:
• RAD-PAK® radiation-hardened against natural space radia-
tion
• Total dose hardness:
- > 100 krad (Si), depending upon space mission
• Output ports have equivalent 22-Ω series resistors, so no
external resistors are required
• Support mixed-mode signal operation (5V input and output
voltages with 3.3V VCC)
• Support unregulated battery operation down to 2.7V
• Typical VOLP (Output ground bounce) < 0.8V at VCC = 3.3V,
TA = 25°C
• IOFF and power-up 3-state support hot insertion
• Bus hold on data inputs eliminates the need for external
pull-up/pull-down resistors
• Distributed VCC and GND pin configuration minimizes high-
speed switching noise
• Flow-through architecture optimizes PCB layout
• Package: 48 pin RAD-PAK flat pack
DESCRIPTION:
Maxwell Technologies’ 54LVTH162244 devices are 16-bit buff-
ers and line drivers designed for low-voltage (3.3V) VCC oper-
ation, but with the capability to provide a TTL interface to a 5V
system environment. These devices can be used as four 4-bit
buffers, two 8-bit buffers, or one 16-bit buffer. These devices
provide true outputs and symmetrical active-low output-enable
(OE) inputs.
The outputs, which are designed to source or sink up to 12
mA, include equivalent 22-Ω series resistors to reduce over-
shoot and undershoot. Active bus-hold circuitry is provided to
hold unused or floating data inputs at a valid logic level.
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.
1000607
12.19.01 Rev 1
(858) 503-3300 - Fax: (858) 4503-3301 - www.maxwell.com
All data sheets are subject to change without notice 1
©2001 Maxwell Technologies.
All rights reserved.
1 page  
16-Bit Buffers/Drivers with 3-State Outputs
54LVTH162244
TABLE 7. FUNCTION TABLE
(EACH 4-BIT BUFFER)
INPUTS
OUTPUT
OE A
Y
L HH
L LL
HXZ
FIGURE 1. LOAD CIRCUIT FOR OUTPUTS
Figure Note:
1. CL includes probe and jog capacitance
.
PARAMETER MEASUREMENT INFORMATION
TEST S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
6V
GND
FIGURE 2. PULSE DURATION
1000607
12.19.01 Rev 1
All data sheets are subject to change without notice 5
©2001 Maxwell Technologies.
All rights reserved.
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet 54LVTH162244.PDF ] | |
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