RFID reader documentation

Parallax, Inc. • RFID Reader Module (#28140) •Updated 09/2005 v1.1 Page 4
DC Characteristics
At V
CC
= +5.0V and T
A
= 25ºC unless otherwise noted
Test Specification Unit
Parameter Symbol
Conditions Min. Typ. Max.
Supply Voltage V
CC
--- 4.5 5.0 5.5 V
Supply Current, Idle I
IDLE
--- --- 10 --- mA
Supply Current, Active I
CC
--- --- 90 --- mA
Input LOW voltage V
IL
+4.5V <= V
CC
<= +5.5V --- --- 0.8 V
Input HIGH voltage V
IH
+4.5V <= V
CC
<= +5.5V 2.0 --- --- V
Output LOW voltage V
OL
V
CC
= +4.5V --- --- 0.6 V
Output HIGH voltage V
OH
V
CC
= +4.5V V
CC
- 0.7 --- --- V
RFID Tags Available From Parallax
Parallax provides two passive RFID tags from our on-line store. We’re stocking the tags because many
suppliers have high minimums, yet many of our customers may only want a few tags for their basic
experimentation.
• 54 mm x 85 mm Rectangle Tag (#28141)
• 50 mm Round Tag (#28142)
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1.97” (50mm)
Ø.17” (4.3mm)
hole
0.8” (2.1mm) thick
Actual tag dimensions may vary. Contact Parallax for specific information.