Part # MAX4670 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX4670 1 DS


Part Details:

19-3798; Rev 0; 09/06 Integrated T1/E1/J1 Short-Haul and Long-Haul Protection Switch MAX4670 General Description Features The MAX4670 is an integrated T1/E1/J1 analog protec- Single +3.3V Supply Voltage tion switch for 1+1 and N+1 line-card redundancyapplications. It protects two T1/E1/J1 ports by combin- Quad-DPDT/Octal-SPDT Switches Support ing eight SPDT switches in a single package. The Two T1/E1/J1 Ports switch is optimized for high-return loss and pulse-tem- Low RON plate performance in T1/E1/J1 long-haul and short-haul 0.7 (typ) in Transmit Path; 5 (typ) in applications. The part offers built-in chip-side surgeprotection capability for short-haul intrabuilding appli- Receive Path cations. Low CON/COFF The MAX4670 replaces two diode arrays or two tran- 60pF/40pF (typ) in Transmit Path sient voltage suppressors (TVSs) and four dual-SPDT 24pF/12pF (typ) in Receive Path relays, significantly reducing board space and simplify- Chip Surge Protection ing PC board routing. The MAX4670 pinout is targeted IEC 61000-4-5 (8µs to 20µs Surge) for T1/E1/J1 applications, resulting in a simplified layout Class 2 (±1kV) when interfacing with standard line transformers andline interface units (LIUs). -70dB (typ) Crosstalk/Off-Isolation (3MHz) The MAX4670 has four 1.0 (max) on-resistance switch- Small, 32-Pin TQFN Package es with 60pF/40pF on-/off-capacitances for interfacing tothe LIU transmitter outputs. The MAX4670 also includesfour 10 (max) on-resistance switches with low Ordering Information 24pF/12pF on-/off-capacitances for interfacing to the LIUreceiver inputs. Four logic inputs control the receive/ PIN- SURGE PKG transmit pairs, in addition to a SWITCH input that con- PART* PACKAGE PROTECTION CODE nects all switches to the system s protection bus. 32 TQFN The MAX4670 operates from a single +2.7V to +3.6V MAX4670ETJ YES T3255-4 (5mm x 5mm) supply and is available in 32-pin thermally enhanced *This part operates at a -40°C to +85°C temperature range. TQFN package. The MAX4670 is specified over the -40°C to +85°C operating temperature range.


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MAX4670.pdf Datasheet