Octal Buffers/Drivers. 54LVTH244A Datasheet


54LVTH244A Buffers/Drivers. Datasheet pdf. Equivalent


Part Number

54LVTH244A

Description

3.3V ABT 8-Bit Octal Buffers/Drivers

Manufacture

Maxwell Technologies

Total Page 9 Pages
Datasheet
Download 54LVTH244A Datasheet


54LVTH244A
www.DataSheet4U.com
54LVTH244A
3.3V ABT 8-Bit Octal
Buffers/Drivers
Logic Diagram
FEATURES:
• 3.3V ABT octal buffers/drivers with 3-state outputs
• RAD-PAK® radiation-hardened against natural space radia-
tion
• Package:
- 20 Pin RAD-PAK® flat package
• Operating temperature range:
-55 to 125°C
• Supports mixed-mode signal operation
-5V Input and Output Voltages with 3.3V VCC
• Supports mixed-mode signal operation
- 5V input and output voltages with 3.3V VCC
• Supports unregulated battery operation down to 2.7V
• Typical VOLP (output ground bounce) < 0.8V at VCC=3.3V,
TA=25°C
• Supports live insertion
• Bus-hold data inputs eliminate the need for external pullup
resistors
DESCRIPTION:
Maxwell Technologies’ 54LVTH244A octal buffers/drivers
micro-circuit is housed in a Rad-Pak® package. The
54LVTH244A is designed specifically for low voltage (3.3V)
VCC 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 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 a space
mission. This product is available with packaging and screen-
ing up to Class S.
1000601
12.19.01 Rev 1
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com
All data sheets are subject to change without notice 1
©2001 Maxwell Technologies
All rights reserved.

54LVTH244A
3.3V ABT 8-Bit Octal Buffers/Drivers
54LVTH244A
TABLE 1. PINOUT DESCRIPTION
PIN SYMBOL
DESCRIPTION
1, 19
2, 4, 6, 8
3, 5, 7, 9
10
11, 13, 15, 17
12, 14, 16, 18
20
1OE-2OE
IA1-IA4
2Y4-2Y1
GND
2A1-2A4
1Y4-1Y1
VCC
Output Enable
Input
Output
Ground
Input
Output
Supply Voltage
TABLE 2. 54LVTH244A ABSOLUTE MAXIMUM RATINGS1
PARAMETER
SYMBOL
MIN
MAX
UNIT
Supply Voltage Range
VCC -0.5 4.6
Input Voltage Range 2
VI -0.5 7.0
Voltage Range Applied to Any Output in the High State or Power-Off
VO
-0.5
7.0
State
V
V
V
Current into Any Output in the Low State
Current Into Any Output in the High State 3
Input Clamp Current (VI < 0)
Output Clamp Current (VO < 0)
Total Power Dissipation at TA = 55 °C
IO -- 96 mA
IO -- 48 mA
IIK -- -50 mA
IOK -- -50 mA
PD -- 650 mW
Operating Temperature
Storage Temperature Range
TA -55 125 °C
TS -65 150 °C
1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions betond those indicated under “Rec-
ommended Operating Conditions” is not imp[lied. Exposure to absolute-maximum-rated conditions for extended periods may
affect device reliability.
2. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
3. This current flows only when the output is in the high state and VO > VCC.
1000601
12.19.01 Rev 1
All data sheets are subject to change without notice 2
©2001 Maxwell Technologies
All rights reserved.


Features www.DataSheet4U.com PRELIMINARY 3.3V A BT 8-Bit Octal Buffers/Drivers 54LVTH2 44A Logic Diagram Memory FEATURES: 3.3V ABT octal buffers/drivers with 3-state outputs • RAD-PAK® radiation -hardened against natural space radiati on • Package: - 20 Pin RAD-PAK® flat package • Operating temperature rang e: -55 to 125°C • Supports mixed-mod e signal operation -5V Input and Output Voltages with 3.3V VCC • Supports mi xed-mode signal operation - 5V input an d output voltages with 3.3V VCC • Sup ports unregulated battery operation dow n to 2.7V • Typical VOLP (output grou nd bounce) < 0.8V at VCC=3.3V, TA=25°C • Supports live insertion • Bus-ho ld data inputs eliminate the need for e xternal pullup resistors DESCRIPTION: Maxwell Technologies’ 54LVTH244A octa l buffers/drivers micro-circuit is hous ed in a Rad-Pak® package. The 54LVTH24 4A is designed specifically for low vol tage (3.3V) VCC operation, but with the capability to provide a TTL interface to a 5V system environment. The 54LVTH244A is organ.
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