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54LVTH244ARPFE Datasheet

  • 54LVTH244ARPFE

  • 3.3V ABT 8-Bit Octal Buffers/Drivers

  • 9頁

  • MAXWELL

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P
RELIMINARY
3.3V ABT 8-Bit Octal
Buffers/Drivers
54LVTH244A
Logic Diagram
Memory
F
EATURES
:
鈥?3.3V ABT octal buffers/drivers with 3-state outputs
鈥?R
AD
-P
AK
廬 radiation-hardened against natural space radia-
tion
鈥?Package:
- 20 Pin R
AD
-P
AK
廬 flat package
鈥?Operating temperature range:
-55 to 125
擄
C
鈥?Supports mixed-mode signal operation
-5V Input and Output Voltages with 3.3V V
CC
鈥?Supports mixed-mode signal operation
- 5V input and output voltages with 3.3V V
CC
鈥?Supports 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?Supports live insertion
鈥?Bus-hold data inputs eliminate the need for external pullup
resistors
D
ESCRIPTION
:
Maxwell Technologies鈥?54LVTH244A octal buffers/drivers
micro-circuit is housed in a Rad-Pak廬 package. The
54LVTH244A is designed specifically for low voltage (3.3V)
V
CC
operation, but with the capability to provide a TTL inter-
face to a 5V system environment. The 54LVTH244A is orga-
nized as two 4-bit drivers with separate output enable (OE)
inputs. When OE is low, the device passes data from the A
inputs to the Y outputs. When OE is high, the outputs are in
the high impedance state. The 54LVTH244A active bus hold
circuitry is provided to prevent floating data inputs at a valid
logic level and to eliminate the need for pullup resistors.
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 a space
mission. This product is available with packaging and screen-
ing up to Class S.
1000601
12.19.01 Rev 1
All data sheets are subject to change without notice
1
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
漏2001 Maxwell Technologies
All rights reserved.

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