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SERIES AP471 ACROPACK
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 33 -
http://www.acromag.com
- 33 -
www.acromag.com
6.4 Reliability Prediction
MTBF (Mean Time Between Failure): MTBF in hours using MIL-HDBK-217F,
FN2. Per MIL-HDBK-217, Ground Benign, Controlled, G
B
G
C
Temperature MTBF (Hours)
MTBF (Years)
Failure Rate (FIT
1
)
25°C
TBD
TBD
TBD
40°C
TBD
TBD
TBD
1
FIT is Failures in 10
9
hours.
6.5 Digital Inputs
Input Channel Configuration
48 buffered inputs with programmable debounce circuitry.
For DC voltage applications only, observe proper polarity.
Input Signal Voltage Range
-0.25V to +5.25V DC
Input Low Voltage Range
0.8V Max to 0.25V below common ground.
Input High Voltage Range
2.2V Min to 0.25V above +5V supply Max.
Input Transition Rise or Fall
Time
3ms/V Max.
Input Response Time
250ns Typical
Input Threshold
1.5V Typical
Input/Output Capacitance
20pF Max, 10pF Typical
Input Leakage Current
±10µA Typical
6.6 Digital Outputs
Output Channel Configuration
48 open-drain CMOS outputs.
For DC voltage applications, only, observe proper polarity.
Output Low Voltage
0.1VDC Typical, 0.4VDC Maximum at 12mA
Output High Voltage
4.8VDC at -10µA
Output “ON” Current Range
0 to 15mA DC (for V
OL
≤ 0.5V)
Output R
DS
ON Resistance
33Ω Maximum (25°C)
Output Pullups
4.7kΩ integrated pull-ups installed on board.