AS1976-T austriamicrosystems, AS1976-T Datasheet - Page 14

• Manufacturer Part Number: AS1976-T
• Description: IC COMPARATOR PUSH/PULL SOT23-5
• Manufacturer: austriamicrosystems

Specifications of AS1976-T

• Comparator Type: General Purpose
• No. Of Comparators: 1
• Response Time: 15µs
• Ic Output Type: Push Pull
• Supply Current: 200nA
• Supply Voltage Range: 1.8V To 5.5V
• Amplifier Case Style: SOT-23
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS1976/AS1977
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
Logic-Level Translation
The AS1977 can be used as a 5V-to-3V logic translator.
levels, and provides the full 5V logic-swing without creating overvoltage on the 3V logic inputs.
Note: When the comparator is powered by a 5V supply, R
For 3V-to-5V logic-level translations, connect the +3V supply voltage to V
Figure 30. AS1977 Logic-Level Translation Circuit
Layout Considerations
The AS1976/AS1977 requires proper layout and design techniques for optimum performance.
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Power-supply bypass capacitors are not typically required, although 100nF bypass capacitors should be placed
close to the AS1976/AS1977 supply pins when supply impedance is high, leads are long, or for excessive noise on
the supply lines.
Minimize signal trace lengths to reduce stray capacitance.
A ground plane should be used.
Surface-mount components should be used whenever practical.
+3V supply voltage.
Logic In
+5/+3V
+3/+5V
100kΩ
100kΩ
REF
V
IN+
CC
5
4
3
Revision 1.01
AS1977
Figure 30
PULUP
for the open-drain output should be connected to the
shows an application that converts 5V- to 3V-logic
1
OUT
2
V
Logic-Level Translator
CC
EE
and the +5V supply voltage to R
+3/+5V
R
Pullup
Logic Out
+5/+3V
PULUP
14 - 17
.