Specifications

PART 4 – Embedded Device Servers Chapter 14 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342P) 198
DC Electrical Characteristics
5V Serial SocketWireless
5VDC Characteristics (VDD = 5V ± 0.25V) VDDMAX = 5.25V
Inputs
Input High
Input Low
–DTR (40), –TXD (35), –RTS (33)
Min 2.0V
Max 0.8V
–RESET (24)
Min 2.0V
Max 0.8V
Input Capacitance
15 pF
Outputs Output High Output Low Current Drive
–DCD (39), –CTS (38), –RI (36),
–RXD (34)
Min 4V / 2.4V Max 0.5V / 0.5V (5V / 3.3V) 3.2mA,
7.0mA for TXD
3.3V Serial SocketWireless
3.3VDC Characteristics (VDD = 3.3V ± 0.3V) VDDMAX = 3.6V
Inputs
Input High
Input Low
–DTR (40), –TXD (35), –RTS (33) Min 2.0V Max 0.8V
–RESET (24) Min 2.0V Max 0.8V
Input Capacitance
15 pF
Outputs
Output High
Output Low
Current Drive
–DCD (39), –CTS (38), –RI (36),
–RXD (34)
Min 2.4V
Max 0.5V / 0.5V (5V / 3.3V)
3.2mA,
7.0mA for TXD
Power Measurements
Power* Measurement at 3.3 Voltage
Idle
Master
Unconnected
Master
Connected
Fast
Data
Master
Inquiry
(Maximum)
Deep
Sleep
Mode
Slave
Unconnected
Slave
Connected
Current (AMPS)
1.5mA
1.5mA
6mA
21mA
68mA
70µA
45mA
21mA
Power* Measurement at 5.00 Voltage
Idle
Master
Connected
Fast
Data
Master
Inquiry
(Maximum)
Current (AMPS)
1.6mA
7mA
38mA
74mA
Note: These power measurements were taken with no LEDs connected.
Driving an LED through 330 ohm resistor to GND draws an additional 4mA on 5V for each LED.
* Multi-Tech Systems, Inc. recommends that the customer incorporate a 10% buffer into their power source when
determining product load.