TFBS4650 Vishay, TFBS4650 Datasheet - Page 6

• Manufacturer Part Number: TFBS4650
• Description: TRANSCEIVER, IRDA
• Manufacturer: Vishay

Specifications of TFBS4650

• Data Rate Max: 115.2Kbps
• Data Transmission Distance: 30cm
• Peak Wavelength: 886nm
• Supply Current: 2mA
• Supply Voltage Range: 2.4V To 3.6V
• Operating Temperature Range: -25°C To +85°C
• Msl: MSL 4 - 72 Hours
• External: RoHS Compliant
• External Depth: 1.6mm
• Rohs Compliant: Yes
• Communication Cone: 15°
• Svhc: No SVHC (20-Jun-2011)

Transmitter
T
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
*)
is for minimum current consumption. This transceiver can be adapted to > 50 cm operation by increasing the current to > 200 mA, e.g.
operating the transceiver without current control resistor (i.e. R1 = 0 Ω) and using the internal current control.
Table 1.
Truth table
Document Number 84672
Rev. 1.1, 03-Jul-06
IRED operating current, current
controlled
Output leakage IRED current
Output radiant intensity *)
Output radiant intensity *)
Output radiant intensity *)
Saturation voltage of IRED
driver
Peak - emission wavelength
Optical rise time,
Optical fall time
Optical output pulse duration
Optical output pulse duration
Optical overshoot
amb
The radiant intensity can be adjusted by the external current limiting resistor to adapt the intensity to the desired value. The given value
= 25 °C, V
high
SD
low
low
low
low
low
Parameter
CC
= 2.4 V to 3.6 V unless otherwise noted.
high > 50 µs
TXD
high
low
low
low
x
The IRED current is internally
controlled but also can be
reduced by an external resistor
R1
Tamb = 85°C
α = 0°, 15°, TXD = High, SD =
Low, V
R1 = 30 Ω (resulting in about
50 mA drive current)
α = 0°, 15°, TXD = High, SD =
Low, V
R1 = 0 Ω, If = 300 mA
V
TXD = Low or SD = High
(Receiver is inactive as long as
SD = High)
V
Input pulse width t < 30 µs
Input pulse width t ≥ 30 µs
Input pulse width t = 1.63 µs
CC1
CC
Inputs
= 3.0 V, If = 50 mA
= 5.0 V, α = 0°, 15°
CC1
CC1
Test Conditions
= 3.0 V, V
= 3.0 V, V
Optical input Irradiance mW/m
< Max. irradiance E
> Max. irradiance E
> Min. irradiance E
CC2
CC2
= 3.0 V,
= 3.0 V,
< 4
x
x
x
e
e
e
Symbol
V
I
t
IRED
t
CEsat
ropt
t
t
t
λ
fopt
I
I
I
I
opt
opt
opt
D
e
e
e
p
2
,
Tri-state floating with a weak
pull-up to the supply voltage
1.45
Min
200
880
20
30
4
low (echo on)
low (active)
Vishay Semiconductors
RXD
high
high
x
1.61
Typ.
886
0.4
25
50
t
Outputs
TFBS4650
Max
0.04
400
150
900
100
300
2.2
20
1
www.vishay.com
Transmitter
I
0
0
0
0
0
e
mW/sr
mW/sr
mW/sr
Unit
mA
nm
µA
µs
µs
µs
ns
%
V
125