LH1465AB AGERE | Alldatasheet
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Technical content
Replace Figure 11 on page 10 of the LH1465AB/AAE data sheet with the figure shown below. Figure 1. MLT Circuit Showing New Placement of Zener Diode (ZD ) and Capacitor (CA ) incorrect dial pulses at its output, and thus prevent the NT from properly exiting the ILOSS mode. MMSZ4685T1). Capacitor CA is a 1.0 µF ±10% tantalum chip capacitor, with a voltage rating of at least 16 V . voltage, which increases the robustness of the circuit.
- Motorola is a registered trademark of Motorola Inc.
Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Copyright © 1998 Lucent T echnologies Inc. All Rights Reserved Printed in U.S.A. July 1998 AY98-028ISDN (Replaces AY98-013ISDN) (Must accompany DS97-414ISDN) For additional information, contact your Microelectronics Group Account Manager or the following: INTERNET: http://www.lucent.com/micro E-MAIL: docmaster@micro.lucent.com N. AMERICA: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18103 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 CHINA: Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F , Zao Fong Universe Building, 1800 Zhong Shan Xi Road, Shanghai 200233 P . R. China Tel. (86) 21 6440 0468, ext. 316, FAX (86) 21 6440 0652 JAPAN: Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EUROPE: Data Requests: MICROELECTRONICS GROUP DATALINE: Tel. (44) 1189 324 299, FAX (44) 1189 328 148 T echnical Inquiries: GERMANY: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Bracknell), FRANCE: (33) 1 48 83 68 00 (Paris), SWEDEN: (46) 8 600 7070 (Stockholm), FINLAND: (358) 9 4354 2800 (Helsinki), ITAL Y: (39) 2 6601 1800 (Milan), SPAIN: (34) 1 807 1441 (Madrid)
LH1465AB/AAE ISDN dc Termination IC
Features
n ANSI U-DSL compatible n High linearity n MLT compatible n SARTS compatible n Portable test set compatible
Description
The LH1465 ISDN dc Termination IC is used on U- interface digital subscriber lines (U-DSL) and pro- vides a polarity insensitive dc termination for the loop-sealing current and a recognizable signature for mechanized loop testing (MLT) systems. The LH1465 passes dc signaling information to the NT1 circuitry through a 6N139 optoisolator (or equivalent). The LH1465 IC consists of two functional blocks. The first provides the electronic inductor and silicon-controlled rectifier portion of the termination, while the second drives the LED of the 6N139 optoisolator. Inquire about the availability of tape-and-reel packaging for the 16-pin SOG (LH1465AAE). Device Code Package Type LH1465AB 8-Pin, Plastic DIP LH1465AAE 16-Pin, Plastic SOG 12-1947(F) Figure 1. Functional Diagram/8-Pin DIP
15 V, 10% 7
4 W, 5%
22 Lucent Technologies Inc. Data Sheet February 1998LH1465AB/AAE ISDN dc Termination IC Functional Description The LH1465 plays a dual role in the ISDN NT1: first, as an electronic inductor for a dc termination with high ac impedance; and second, as part of the dc signaling system for line testing capability. The LH1465 meets or exceeds all specifications for the ISDN NT1 dc termina- tion as described by ANSI Standard T1.601-1991. Use of the LH1465 requires only a few discrete compo- nents. See Figure 11 for a typical NT1 application. The LH1465 is current limited, but is not an overvoltage surge protector. A crowbar-type surge protector limiting the line voltage to less than 250 V is recommended to protect the LH1465. The surge protector must with- stand the requirements in Tables 4 and 5. One such protector is the Teccor * Inc., P2000AA61 SIDACTOR The LH1465 has a polarity guard so that the device gives the same characteristics whether the NT1 TIP or RING terminal is connected to the battery voltage. TIP and RING are connected directly to the LH1465AB terminals 2 and 3 and to the LH1465AAE terminals 4 and 5. The dc T to R I-V characteristics of the LH1465 are shown in Figures 2 and 3. As battery voltage is applied to the loop, the LH1465 conducts current only when the voltage across the LH1465 exceeds about 35 V. With
35 V or more applied to the LH1465A, the device con-
m A of current for about 20 ms and then turns on and goes into the ON state. The LH1465 will remain in the ON state for as long as the loop current exceeds 0.5 mA. The LH1465 has a turn-on and turn-off timing circuit that ensures that the LH1465 will: a) not turn on if a voltage above 43.5 V is applied for less than 3 ms; and b) not turn off if the loop current is interrupted for less than 3 ms. Current for the LED of the optocoupler flows when the current in the LH1465 is greater than 1 mA. However, the LH1465 is guaranteed to turn on if a voltage above
43.5 V is applied for more than 50 ms, and turn off if
1 mA loop current is interrupted for more than 100 ms. See Figures 6, 7, and 8 of this document or Table F1 in Appendix F of ANSI Standard T1.601-1991. Current for the LED is interrupted when loop current is interrupted. The current in the ON state is determined by the battery voltage and loop resistance. Should the loop resistance be negligible and/or applied voltage excessively large, the LH1465 will limit the loop current to less than 60 mA. While in current limit, the LH1465 shunts the 2.2 k W , 4 W power resistor R2 across itself to protect against excessive thermal heating. In the event that fault voltages exceeding 100 V are impressed upon TIP and RING, the LH1465 will shut off and go into a standby mode where very little current flows. When the fault voltage is removed, the LH1465 goes back into its normal ON-state operation. Pin Descriptions DIP SOG Symbol Name/Function 1 1 PR+ Protection resistor positive side 2 4 T Tip side of the loop 3 5 R Ring side of the loop 4 8 PR– Protection resistor negative side 5 9 COM Common 6 12 PD Photodiode (LED input current) 7 13 RS Current-limit resistor 8 16 TC Timing capacitor 2, 3 NC No connection 6, 7 NC No connection 10, 11 NC No connection 14, 15 NC No connection Teccor is a trademark and SIDACTOR is a registered trademark of Teccor, Inc.
Lucent Technologies Inc. 3 Data Sheet February 1998 LH1465AB/AAE ISDN dc Termination IC Absolute Maximum Ratings At 25 C Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso- lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those indicated in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. * If the SOG package is used, it is recommended to place a drop of RTV (room temperature vulcanizing) compound on the tip and ring pins (pins 3 and 4). This will guard against the possibility of arcing between the pins (which are 0.030 in. apart) under worst-case dust and oil board buildup conditions.
Electrical Characteristics
T A = 25 C Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering evaluations. Typical values are for information purposes only and are not part of the test- ing requirements. Table 1. dc Specifications, Normal Operation Table 2. ac Specifications, Normal Operation
100 V for 2 s Source
70 V — — 70 mA
4 Lucent Technologies Inc. Data Sheet February 1998LH1465AB/AAE ISDN dc Termination IC T A = 25 C (continued) Table 3. Transition Specifications, Normal Operation Table 4. Abnormal Conditions Class 1 (Survivable; No Device Damage) device with peak voltages limited to 250 V. second lead of the pair to ground with the first lead grounded, and from the pair connected together to ground. Table 5. Abnormal Conditions Class 2 (Fail Safe; No Fire) device with peak voltages limited to 250 V.
150 Vrms
300 Vrms—600 Vrms
0 Vrms—600 Vrms
0 A—2 A
2 A—6 A
Table 6. LED Trigger Specifications During MLT Signaling Table 7. LED Trigger Specifications During Dial Test Set Signaling (See Figure 10.) Table 8. Discrete Component Specification (See Figures 10 and 11.)
- Insulation resistance of this part must be >2 GW .
Figure 4. Test Circuit for ac Impedance and Linearity Figure 5. Linearity Requirement Template
1000 V mt·
Figure 6. Test Circuit for Activate and Deactivate Times Figure 7. Applied Waveform for Activation Test
200 W —4 kW
Figure 8. Applied Waveform for Deactivation Test For series test, open SHUNT rotary dial. For shunt test, short SERIES rotary dial. For MLT test, short SERIES rotary dial and open SHUNT rotary dial. Figure 9. Test Circuit for LED Operation
60 V PEAK, 2 Hz—3 Hz
85 W85 mH
Figure 10. Connection Diagram an example of a reference circuit that uses the LH1465 and the T7256. Figure 11. Typical NT1 Application
200 V—250 V
25 W 1 mF
Lucent Technologies Inc. 11 Data Sheet February 1998 LH1465AB/AAE ISDN dc Termination IC Outline Diagrams Dimensions are in millimeters. 8-Pin, Plastic DIP (LH1465AB) 5-4410r.1 16-Pin, Plastic SOG (LH1465AAE) 5-4414r.2 Package Description Number of Pins (N) Package Dimensions Maximum Length (L) Maximum Width Without Leads (B) Maximum Width Including Leads (W) Maximum Height Above Board (H) PDIP3 (Plastic Dual-In-Line Package) 8 10.16 6.48 7.87 5.46 SOG (Small Outline, Gull-Wing) 16 10.49 7.62 10.64 2.67 W H 0.023 MAX2.54 TYP
0.38 MIN
N PIN #1 IDENTIFIER ZONE L B W
0.0240.020 MAX
H
0.36 MIN
0.10 SEATING PLANE
1.27 TYP
N L B PIN #1 IDENTIFIER ZONE
February 1998LH1465AB/AAE ISDN dc Termination IC For additional information, contact your Microelectronics Group Account Manager or the following: INTERNE T: http://www.lucent.com/micro E-MAIL: docmaster@micro.lucent.com U.S.A.: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18103 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 JAPAN: Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagaw a-ku, Tokyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EU R OPE: Data Requests: MICR OELECT R ONICS G R OUP DATALINE: Tel. (44) 1189 324 299, FAX (44) 1189 328 148 Technical Inquiries:GERMAN Y: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Bracknell), FRANCE : (33) 1 41 45 77 00 (Paris), SWEDEN: (46) 8 600 7070 (Stockholm), FINLAND: (358) 9 4354 2800 (Helsinki), ITALY: (39) 2 6601 1800 (Milan), SPAIN: (34) 1 807 1441 (Madrid) Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Co pyright © 1997 Lucent Technologies Inc. All Rights Reserved February 1998 DS97-414ISDN (Replaces DS93-015HVIC and DA95-031ISDN) Printed On Recycled Paper O rdering Information D evice Package Comcode LH1465AB 8-Pin, Plastic DIP 106444987 LH1465AAE 16-Pin, Plastic SOG 106725054