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MAX3264 Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX3264 Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 17 page +3.0V to +5.5V, 1.25Gbps/2.5Gbps Limiting Amplifiers _______________________________________________________________________________________ 7 Pin Description EP EP Ground. The exposed paddle must be soldered to the circuit–board ground for proper thermal performance. Exposed Paddle — 7 Output Current Level. When this pin is not connected, the CML output current is approximately 16mA. When this pin is connected to ground, the output current increases to approximately 20mA. (In the MAX3265CUB/MAX3765CUB, LEVEL is internally connected to ground.) — 15 Squelch Input. The squelch function is disabled when SQUELCH is not connected or is set to a TTL low level. When SQUELCH is set to a TTL high level and LOS is asserted, the data outputs, OUT+, and OUT-, are forced to static levels. See sec- tions PECL Output Buffer and CML Output Buffer for more information. (In the MAX3265/MAX3268/MAX3269 10-pin µMAX, SQUELCH is not connected. In the MAX3765/MAX3768, SQUELCH is internally connected to VCC.) — 16 No Connection N.C. SQUELCH — 10 Noninverted Loss-of-Signal Output. LOS is low when the level of the input signal is above the preset threshold set by the TH input. LOS asserts high when the sig- nal level drops below the threshold. LOS LEVEL — 1 Offset-Correction-Loop Capacitor. A capacitor connected between this pin and CAZ2 extends the time constant of the offset correction loop. — 2 Offset-Correction-Loop Capacitor. A capacitor connected between this pin and CAZ1 extends the time constant of the offset correction loop. Refer to Design Procedure. CAZ2 CAZ1 6 9 Inverted Loss-of-Signal Output. LOS is high when the level of the input signal is above the preset threshold set by the TH input. LOS is asserted low when the signal level drops below the threshold. 8 12 Inverted Data Output 9 13 Noninverted Data Output OUT+ OUT- 7, 10 11, 14 Supply Voltage VCC LOS 3 5 Inverted Input Signal 5 8 Loss-of-Signal Threshold. A resistor connected from this pin to ground sets the input signal level at which the loss-of-signal (LOS) output(s) is asserted. Refer to Typical Operating Characteristics and Design Procedure. TH IN- 2 4 Noninverted Input Signal IN+ TSSOP FUNCTION µMAX NAME GND 1, 4 3, 6 Supply Ground PIN |
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