28140 Parallax Inc, 28140 Datasheet - Page 4

• Manufacturer Part Number: 28140
• Description: READER MODULE RFID
• Manufacturer: Parallax Inc

Specifications of 28140

• Rf Type: Read Only
• Frequency: 125kHz
• Features: Single 5V Power Supply
• Package / Case: Module
• Product: Microcontroller Accessories
• Data Bus Width: 8 bit
• Clock Speed: 125 KHz
• Interface Type: USB
• Operating Supply Voltage: 5.5 V
• Board Size: 46.99 mm x 69.22 mm x 21.84 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

DC Characteristics
At 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.
Actual tag dimensions may vary. Contact Parallax for specific information.
Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1


CC
Parameter
Supply Voltage
Supply Current, Idle
Supply Current, Active
Input LOW voltage
Input HIGH voltage
Output LOW voltage
Output HIGH voltage
= +5.0V and T
54 mm x 85 mm Rectangle Tag (#28141)
50 mm Round Tag (#28142)
A
= 25ºC unless otherwise noted
Symbol
V
I
I
V
V
V
V
IDLE
CC
CC
IL
IH
OL
OH
Test
Conditions
---
---
---
+4.5V <= V
+4.5V <= V
V
V
CC
CC
= +4.5V
= +4.5V
CC
CC
<= +5.5V
<= +5.5V
Ø.17” (4.3mm)
hole
V
CC
Min.
4.5
2.0
---
---
---
---
- 0.7
Specification
Typ.
0.8” (2.1mm) thick
5.0
10
90
---
---
---
---
1.97” (50mm)
Max.
5.5
0.8
0.6
---
---
---
---
Unit
mA
mA
V
V
V
V
V
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