max9157ehjt Maxim Integrated Products, Inc., max9157ehjt Datasheet
max9157ehjt
Related parts for max9157ehjt
max9157ehjt Summary of contents
Page 1
Rev 0; 1/02 General Description The MAX9157 is a quad bus LVDS (BLVDS) transceiver for heavily loaded, half-duplex multipoint buses. Small 32-pin QFN and TQFP packages and flow-through pinouts allow the transceiver to be placed near the con- nector ...
Page 2
Quad Bus LVDS Transceiver ABSOLUTE MAXIMUM RATINGS GND................................................-0.3V to +4. DO_+/RIN_+, DO_-/RIN_-, to GND .......................-0.3V to +4.0V DIN_, DE_, RE_ to GND.........................................-0.3V to +4.0V RO_ to GND................................................-0. AGND to GND .......................................................-0.3V to ...
Page 3
DC ELECTRICAL CHARACTERISTICS (continued 3.0V to 3.6V 27Ω ±1%, differential input voltage | DE_ = high, RE_ = low, T input voltage range = 3.3V 0.2V, ...
Page 4
Quad Bus LVDS Transceiver AC ELECTRICAL CHARACTERISTICS (V = 3.0V to 3.6V 27Ω ±1%, differential input voltage | quency to LVCMOS/LVTTL inputs = 100MHz, LVCMOS/LVTTL inputs = with 2ns (10% to 90%) transition ...
Page 5
AC ELECTRICAL CHARACTERISTICS (continued 3.0V to 3.6V 27Ω ±1%, differential input voltage | quency to LVCMOS/LVTTL inputs = 100MHz, LVCMOS/LVTTL inputs = with 2ns (10% to 90%) transition times. Differential input ...
Page 6
Quad Bus LVDS Transceiver (V = 3.3V 27Ω, driver C = 10pF, receiver DRIVER TRANSITION TIME vs. LOAD CAPACITANCE 1.3 1.2 t THL 1.1 1 LOAD CAPACITANCE (pF) DRIVER TRANSITION TIME ...
Page 7
PIN NAME 1, 2, 22, 23 GND RE34 5 6 DE34 7, 17 AGND DO4-/RIN4- 10 DO4+/RIN4+ 11 DO3-/RIN3- 12 DO3+/RIN3+ 13 DO2-/RIN2- 14 DO2+/RIN2+ 15 DO1-/RIN1- 16 ...
Page 8
Quad Bus LVDS Transceiver Detailed Description The MAX9157 is a four-channel, 200Mbps, 3.3V BLVDS transceiver in 32-lead TQFP and QFN packages, ideal for driving heavily loaded multipoint buses, typically cards plugged into a backplane. The MAX9157 receivers ...
Page 9
A typical LVDS driver (rated for a 100Ω load) would not develop a large enough differential signal ...
Page 10
Quad Bus LVDS Transceiver Table 3. Receiver Mode INPUTS RE_ DO_+ IN_+ DO_ < -100mV > 100mV ID Fail-safe operation guaranteed when DO_+/RIN_+ and DO_-/RIN_- are ...
Page 11
DIN_ t PLHD RIN_- 0 DIFFERENTIAL RIN_+ 80 -/RIN DO_+/RIN_+ 20% t TLH Figure 4. Driver Propagation Delay and Transition Time Waveforms DE_ D0_+/RIN_+ WHEN DIN_ ...
Page 12
Quad Bus LVDS Transceiver DO_-/RIN_- DO_+/RIN_+ RO_ Figure 8. Receiver Transition Time and Propagation Delay Timing Diagram GENERATOR Figure 9. Receiver High-Impedance Delay Test Circuit 50% RE_ t PLZ RO_ WHEN V = -100mV ID t PHZ RO_ WHEN V ...
Page 13
Functional Diagram DIN1 DE12 RO1 RE12 DIN2 RO2 DIN3 DE34 RO3 RE34 DIN4 RO4 MAX9157 Chip Information TRANSISTOR COUNT: 1826 PROCESS: CMOS ______________________________________________________________________________________ Quad Bus LVDS Transceiver TOP VIEW DO1+/RIN1+ DO1-/RIN1- N. DO2+/RIN2+ CC GND ...
Page 14
Quad Bus LVDS Transceiver 14 ______________________________________________________________________________________ Package Information ...
Page 15
Quad Bus LVDS Transceiver ______________________________________________________________________________________ Package Information (continued) 15 ...
Page 16
Quad Bus LVDS Transceiver Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice ...