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54LVTH162245RPFB Datasheet

  • 54LVTH162245RPFB

  • 16-Bit Bus Transceivers with 3-State Outputs

  • 10頁

  • MAXWELL

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54LVTH162245
16-Bit Bus Transceivers with
3-State Outputs
/
/
/
/
Memory
Logic Diagram
F
EATURES
:
鈥?A-Port outputs have equivalent 22-
鈩?/div>
series resistors, so
no external resistors are required
鈥?Support mixed-mode signal operation (5V input and output
voltages with 3.3V V
CC
)
鈥?Support unregulated battery operation down to 2.7V
鈥?Typical V
OLP
(output ground bounce) < 0.8V at V
CC
= 3.3V,
T
A
= 25
擄
C
鈥?I
OFF
and power-up 3-state support hot insertion
鈥?Bus hold on data inputs eliminates the need for external
pullup/pulldown resistors
鈥?Distributed V
CC
and GND pin configuration minimizes high-
speed switching noise
鈥?Flow-through architecture optimizes PCB layout
鈥?Total dose hardness:
- > 100 krad (Si), depending upon space mission
鈥?Package: 48 pin R
AD
-P
AK
廬 flat pack
D
ESCRIPTION
:
Maxwell Technologies鈥?54LVTH162245 devices are 16-bit
(dual-octal) non-inverting 3-state transceivers designed for
low-voltage (3.3V) V
CC
operation, but with the capability to
provide a TTL interface to a 5V system environment. These
devices can be used as two 8-bit transceivers or one 16-bit
transceiver. The devices allow data transmission from the A
bus to the B bus or form the B bus to the A bus, depending on
the logic level at the direction-control (DIR) input. The output
enable (OE) input can be used to disable the device so that
the buses are effectively isolated. The A-port outputs, which
are designed to source or sink up to 12 mA, include equivalent
22-
鈩?/div>
series resistors to reduce overshoot and undershoot.
Maxwell Technologies' patented R
AD
-P
AK
廬 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, R
AD
-P
AK
provides greater than 100
krad (Si) radiation dose tolerance. This product is available
with screening up to Class S.
11.15.02 Rev 2
All data sheets are subject to change without notice
1
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
漏2002 Maxwell Technologies
All rights reserved.

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