l3845 STMicroelectronics, l3845 Datasheet

Page 1

... When Pulse Dialing is required the PULSE input (pin 3) connected to V- causes the device to re- duce the fixed DC voltage drop and to exhibit a pure resistive impedance equal to the external re- sistor LINE TERMINATION OF HOOK 4 DETECTION CIRCUIT DCT D96TL263 L3845 SO8 L3845D V+ PULSE HD0 1/7 ...

Page 2

... L3845 ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Max Line Voltage (pulse duration 10 ms max Max Line Current L P Total Power Dissipation at Tamb = 70 C tot T Operating Temperature Storage and Junction Temperature srg j PIN CONNECTION (Top view) THERMAL DATA Symbol Parameter R Thermal Resistance Junction-ambient (*) ...

Page 3

... The PULSE input when connected to V- allows the device to reduce the Line Voltage and to show a resistive impedance equal the line. When PULSE input is left open, this function is disable. L3845 = + 25 C, amb Typ. Max. Unit 5 ...

Page 4

... L3845 Figure 1: Typical Application. 4/7 ...

Page 5

... MINIDIP PACKAGE MECHANICAL DATA mm DIM Min. Typ. A 3.32 a1 0.51 B 1.15 b 0.356 b1 0.204 D E 7.95 e 2.54 e3 7. 3.18 Z inch Max. Min. Typ. 0.131 0.020 1.65 0.045 0.55 0.014 0.304 0.008 10.92 9.75 0.313 0.100 0.300 0.300 6.6 5.08 3.81 0.125 1.52 L3845 Max. 0.065 0.022 0.012 0.430 0.384 0260 0.200 0.150 0.060 5/7 ...

Page 6

... L3845 SO8 PACKAGE MECHANICAL DATA mm DIM Min. Typ 0 0.65 b 0.35 b1 0. 4.8 E 5.8 e 1.27 e3 3.81 F 3 6/7 inch Max. Min. Typ. 1.75 0.25 0.004 1.65 0.85 0.026 0.48 0.014 0.25 0.007 0.5 0.010 o 45 (typ.) 5.0 0.189 6.2 0.228 0.050 0.150 4.0 0.150 1.27 0.016 0 (max.) Max. 0.069 0.010 0.065 0.033 0.019 ...

Page 7

... SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Nether- Singapore - Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. lands L3845 7/7 ...