MH80625C Protection SIP Preliminary Information ISSUE 2 Features April 1995 Ordering Information • • 2 x 5.5 ohm high power, high voltage, thick film protection resistors MH80625C 2 replaceable 2AG fuses in surface-mounted fuse clips 10 Pin SIL Package 0°C to 70°C Applications • Protection circuit for the MH89625C OPS SLIC • Protection circuit for analog line interfaces, power supplies, etc. Description The MH80625C hybrid SIP provides a protection circuit consisting of two 2AG size fuses in surfacemounted fuse clips and two high voltage, high power resistors. The SIL hybrid, together with an external solid state protector, provides full secondary protection for the MH89625C Off-Premise SLIC, allowing conformance to the requirements of CCITT K.20. F1 R1 TOUT TIN F2 R2 ROUT RIN Figure 1 - Functional Block Diagram 2-3 MH80625C Preliminary Information IC NC RIN NC TOUT ROUT NC TIN NC IC 1 2 3 4 5 6 7 8 9 10 Figure 2 - Pin Connections Pin Description 2-4 Pin # Name Description 1 IC Internal Connection. 2 NC No Connection. 3 RIN Ring Input: Connects to Ring conductor of the Subscriber Loop. 4 NC No Connection. 5 TOUT Tip Output: Connects to Tip conductor of the SLIC. 6 ROUT Ring Output: Connects to Ring conductor of the SLIC. 7 NC No Connection. 8 TIN Tip Input: Connects to Tip conductor of the Subscriber Loop. 9 NC No Connection. 10 IC Internal Connection. MH80625C Preliminary Information Electrical Characteristics 0°C to 70 ° C Characteristics Symbol Min Typ* Max Units Test Conditions 1 Resistance - absolute R1 4.5 5.5 6 Ω 2 Resistance - absolute R2 4.5 5.5 6 Ω 3 Resistance - match 1 % 4 Fuse F1 0.25 Amps Littlefuse 2AG, 250VAC P/N 229.250 Slow Blow 5 Fuse F2 0.25 Amps Littlefuse 2AG, 250VAC P/N 229.250 Slow Blow Match between R1 & R2 * Typical figures are at 25°C and are for design aid only. Reference Specification Test Description Performance Comments 1 CCITT K.20 Lightning Surge Simulation 1kV 10 x 700 µsec No damage No arcing, fuse intact See Note 1 2 CCITT K.20 Power Induction 300 Vrms 200 msec No damage No arcing, fuse intact See Note 1 3 CCITT K.20 Power Cross 220 Vrms 15 min No damage No arcing, fuse blows See Note 1 Note 1: Refer to CCITT K.20 specification for details of tests. MDF PRIMARY PROTECTION TIP MH89625C SECONDARY PROTECTION TIN R1 F1 TOUT 1 5 8 F2 RIN RING 3 TISP 3082 RING RELAY MH80625C TIP R2 2 6 RING ROUT 7 P6KE39C RF2 6 RF1 -V BAT 90 VRMS 25Hz Figure 3 - Application Circuit - Secondary Protection 2-5 MH80625C Preliminary Information 0.34 MAX 1.0 + 0.020 (25.4 + 0.5) 0.01 MIN (0.25) FUSE AREA 0.7 + 0.020 (17.8 + 0.5) FUSE AREA 10 1 1 2 3 4 5 6 0.05 + 0.01 (1.3 + 0.5) * Notes: 1) Not to scale 2) Dimensions in inches). 3) (Dimensions in millimetres). *Dimensions to centre of pin & tolerance non accumulative. 0.05 + 0.02 0.020 + 0.005 (1.225 + 0.05) (0.51 + 0.13) Figure 4 - Mechanical Data 2-6 * * 0.100 + 0.010 (2.54 + 0.26) 0.18 + 0.02 (4.6 + 0.5)