Siemens TCA305G, TCA305A, TCA355G Datasheet
TCA 305
TCA 355
Proximity Switch
Features
● Lower open-loop current consumption; IS < 1 mA
● Lower output saturation voltage
● The temperature dependence of the switching
distance is lower and compensation of the resonant
TC
circuit
● The sensitivity is higher, so that larger switching
distances are possible and coils of a lower quality can
be used
● The switching hysteresis remains constant as regards
temperature, supply voltage and switching distance
● The TCA 305 even functions without external
integrating capacitor. With an external capacitor (or
with RC combination) good noise immunity can be
achieved
(temperature coefficient) is easier
TCA 305
TCA 355
Bipolar IC
P-DSO-8-1
● The outputs are temporarily short-circuit proof (approx.
10 s to 1 min depending on package)
● The outputs are disabled when VS < approx. 4.5 V and
are enabled when the oscillator stabilizes
(from V
● Higher switching frequencies can be obtained
● Miniature package
Type Ordering Code
TCA 305 A Q67000-A2291
■
S min = 5 V)
Package
P-DIP-14-1
TCA 305 G Q67000-A2305 P-DSO-14-1 (SMD)
TCA 355 G Q67000-A2444 P-DSO-8-1 (SMD)
■ Not for new design
P-DIP-14-1
P-DSO-14-1
Semiconductor Group 1
01.96
TCA 305
TCA 355
TCA 305 A
TCA 305 G
TCA 355 G
Pin Configurations (top view)
The devices TCA 305 and TCA 355 contain all the functions necessary to design inductive
proximity switches. By approaching a standard metal plate to the coil, the resonant circuit is
damped and the outputs are switched.
Operation Schematic: see TCA 205
The types TCA 305 and TCA 355 have been developed from the type TCA 205 and are outstanding for the following characteristics:
Logic Functions
Oscillator Outputs
Q
not damped
damped
H
L
L
H
Semiconductor Group 2
TCA 305
TCA 355
Block Diagram
Standard Turn-ON Delay Referred to T
A = 25 ˚C
Semiconductor Group 3
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