VISHAY TFBS6614

TFBS6614
VISHAY
Vishay Semiconductors
Low Profile 4 Mbit/s (FIR) Infrared Transceiver Module with
independent Logic Supply Voltage
Description
The Vishay TFBS6614 is the lowest profile (2.7 mm)
4 Mbit/s Infrared Data Transceiver module available.
A photo PIN diode, an infrared emitter (IRED) and a
low-power CMOS control IC are integrated in a single
package that provides a total front-end solution.
VLOGIC - allows a low-voltage controller to connect
directly to TxD, RxD and SD/Mode logic signals of the
transceiver hence eliminating the need for costly signal level converter and reducing power consumption.
The TxD-echo function is enabled for internal selftest. During transmission the TxD signals are echoed
at RxD output to perform the internal self-test.
The Shut Down (SD) feature cuts current consumption to less than 10 nA.
Features
• Smallest FIR Transceiver available:
H 2.7 mm x D 3.33 mm x L 7.98 mm
• 1.0 m Link distance
• Battery & Power Management Features:
> Receive - 2 mA Typical
> Shutdown - 10 nA Typical
> Independent LED Anode Power Supply
> Wide Voltage Range 2.7 V - 5.5 V
> Power Up Latency < 100 µs
> High VCC Noise Rejection > 100 m VPP
• The TxD-Echo function is enabled
• VLOGIC (1.5 V - 5.5 V) - Independent Digital supply
voltage
• Shutdown Tri-States Receiver Output and Disables TxD allowing Bus Interfacing
• High Immunity to Fluorescent Light Noise and AC
Field. No external shield required
18088
• High DC Ambient Rejection - Operates Outdoors
• Receiver Latency Less than 100 µs
• Directly Interfaces with Various Super I/O and
Controller Devices
Applications
PDAs
Mobile Phones
Notebook Computers, Desktop PCs
Digital Still and Video Cameras
External Infrared Adapters (Dongles)
Diagnostics Systems
Medical and Industrial Data Collection Devices
GPS
Footnotes
Product Disclaimer
This product is under development. Specifications are
subject to change.
Parts Table
Part
TFBS6614-TR3
Document Number 82611
Rev. A1, 30-Apr-03
Description
Oriented in carrier tape for side view surface mounting
Qty / Reel
2500 pcs
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TFBS6614
VISHAY
Vishay Semiconductors
Functional Block Diagram
VC
A m p
Vl o g i c
C 1
C om p
D riv e r
R xD
VC
C 2
L E D A
S D / M ode
TxD
M ode &
Pow er
C o n tro l
18072
LED C
D riv e r
G N D
Pin Description
Pin Number
Function
Description
1
VCC2,
IRED Anode
Connect IRED Anode directly to VCC.To decrease the LED current
add a resistor between VCC and IRED Anode. A non-regulated
separate power supply can be used at this pin.
I/O
Active
2
IRED Cathode
IRED Cathode, internally connected to driver transistor
3
TxD
4
RxD
Transmit Data Input
I
HIGH
Received Data Output, capable of driving a standard CMOS or TTL
load. No external pull-up or pull-down resistor is required. Pin is
floating when device is in shutdown mode and is not quiet during
data transmission.
O
LOW
5
SD/ Mode
Places the device in shutdown mode and switches bandwidth
together with TxD
I
HIGH
6
VCC1
Analog Supply Voltage
7
VLOGIC
Digital Supply Voltage
8
GND
Ground
Absolute Maximum Ratings
Reference Point Ground, Pin 8, unless otherwise noted
Symbol
Value
Unit
Analog Supply Voltage Range, all states
Parameter
VCC1
- 0.5 to 6.0
V
Digital Supply Voltage Range
VDD
- 0.5 to 6.0
V
10.0
mA
25.0
mA
mA
Input Current
Testconditions
During Transmit, VCC = 5.0 V, TxD = VDD
Output Sink Current, RxD
Peak IRED Current
VCC1 = 2.7 V, TxD = VDD, 125 ns pulse
650
Average IRED Current
VCC2 = 2.7 V
125
mA
500
mW
Power Dissipation
Junction Temperature
125
°C
Ambient Temperature Range (Operating)
TA
- 25 to + 85
°C
Storage Temperature Range
TS
- 25 to + 85
°C
215 (≤ 240)
°C
VTxD, V SD
- 0.5 to VDD + 0.5
V
RxD
- 0.5 to VDD + 0.5
V
Soldering Temperature
Transmitter Data and Shutdown Input Voltage
Receiver Data Output Voltage
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2
t = 20 s @ 215 °C
Document Number 82611
Rev. A1, 30-Apr-03
TFBS6614
VISHAY
Vishay Semiconductors
Optoelectronic Characteristics
Receiver
TA = 25 °C, VCC = 2.7 V to 5.5 V unless othervise noted
Testconditions
Symbol
Minimum Detection Threshold Irradiance
Parameter
4.0 Mbits/s,
l = 850 nm to 900 nm
Ee
Analog Supply Voltage Range
Specified operation
VCC
Digital Supply Voltage Range
Specified operation
VDD
Maximum LED Anode Voltage
Min
Typ.
Max
Unit
100
mW/m2
2.7
5.5
V
1.5
5.5
V
VLEDA
ICC Shut Down Current
VCC = 5 V
ICC1
0.01
ICC Idle Current
VCC = 5 V
ICC2
1.6
VCC + 4
V
2.0
nA
mA
Transmitter
TA = 25 °C, VCC = 2.7 V to 5.5 V unless othervise noted
Parameter
Testconditions
α = 0 °C, 15 °C,
TxD = High, SD = Low
Output Radiant Intensity
Mode Switching
Upon power-up the TFBS6614 module initializes in
the SIR (9.6 Kbit/s to 115.2 Kbit/s) mode.The module
can be switched to higher bandwidth and vice versa
by using the sequence described bellow:
SD/Mode
50%
ts
TxD
50%
18073
Document Number 82611
Rev. A1, 30-Apr-03
th
Symbol
Ie
Min
Typ.
110
Max
Unit
mW/Sr
Setting to the High Bandwidth Mode
(0.576 Mbits/s to 4 Mbit/s)
1. Set SD/ Mode input to logic "High".
2. Set TxD input to logic "High". Wait ts ≥ 200 ns.
3. Set SD/ Mode to logic "Low" (the negative edge
latches state of TxD, which determines data rate setting).
4. After waiting th ≥ 200 ns TxD can be set to logic
"Low". The hold time of TxD is limited by the maximum allowed pulse width.
TxD is now enabled as normal TxD input for the high
bandwidth mode.
High: FIR
50%
Low:
SIR/ MIR
Setting to the Lower Bandwidth Mode
(9.6 Kbit/s to 115.2 Kbit/s)
1. Set SD/ Mode input to logic "High".
2. Set TxD input to logic "Low". Wait ts ≥ 200 ns.
3. Set SD/ Mode to logic "Low" (the negative edge
latches state of TxD, which determines data rate setting).
4. After waiting th ≥ 200 ns TxD can be set to logic
"Low". The hold time of TxD is limited by the maximum allowed pulse width.
TxD is now enabled as normal TxD input for the lower
bandwidth mode.
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TFBS6614
VISHAY
Vishay Semiconductors
Recommended Solder Profile
260
10 s max. @ 230°C
240°C max.
240
220
2 - 4 °C/s
200
Temperature /°C
180
160°C max.
160
140
120 s...180 s
120
90 s max.
100
80
2...4°C/s
60
40
20
0
0
18075
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4
50
100
150
200
250
300
350
Time/s
Document Number 82611
Rev. A1, 30-Apr-03
TFBS6614
VISHAY
Vishay Semiconductors
Recommended Circuits
Block Diagram of Transceiver with
Digital Power Supply
VCC=3.3 V
VDD=1.8 V
IR Controller
TFBS6614
R2
3.3Ω
Vdd
LEDA (1)
LEDC (2)
IRTX
TxD (3)
IRRX
RxD (4)
IRMODE
SD (5)
R1
47Ω
Vcc (6)
Vlogic (7)
GND
GND (8)
C1
4.7 µF
C2
0.1µF
C3
4.7 µF
C4
0.1 µF
C5
0.1 µF
18076
Block Diagram of Transceiver with
Common Power Supply
VCC= 3.3 V
IR Controller
TFBS6614
R2
3.3Ω
Vdd
LEDA (1)
LEDC (2)
IRTX
TxD (3)
IRRX
RxD (4)
SD (5)
IRMODE
Vcc (6)
R1
47Ω
Vlogic (7)
GND
C1
4.7µF
C2
0.1µF
C3
4.7µF
C4
0.1µF
GND (8)
18077
Document Number 82611
Rev. A1, 30-Apr-03
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TFBS6614
VISHAY
Vishay Semiconductors
Package Dimensions in Inches (mm)
18074
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Document Number 82611
Rev. A1, 30-Apr-03
TFBS6614
VISHAY
Vishay Semiconductors
Ozone Depleting Substances Policy Statement
It is the policy of Vishay Semiconductor GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and
operatingsystems with respect to their impact on the health and safety of our employees and the public, as
well as their impact on the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are
known as ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs
and forbid their use within the next ten years. Various national and international initiatives are pressing for an
earlier ban on these substances.
Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the
use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments
respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting
substances and do not contain such substances.
We reserve the right to make changes to improve technical design
and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each
customer application by the customer. Should the buyer use Vishay Semiconductors products for any
unintended or unauthorized application, the buyer shall indemnify Vishay Semiconductors against all
claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal
damage, injury or death associated with such unintended or unauthorized use.
Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
Document Number 82611
Rev. A1, 30-Apr-03
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