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ST3293 Dataheets PDF



Part Number ST3293
Manufacturers ST Microelectronics
Logo ST Microelectronics
Description RS-422 HIGH SPEED TRANSCEIVER WITH DIGITAL EMPHASIS
Datasheet ST3293 DatasheetST3293 Datasheet (PDF)

ST3293 RS-422 HIGH SPEED TRANSCEIVER WITH DIGITAL EMPHASIS s s s s s FULL DUPLEX COMMUNICATIONS DEVICE RS-422 PROGRAMMABLE EMPHASIS INCREASES THE DISTANCE AND DATA RATE HIGH SPEED: DATA RATE UP TO 25Mbps -7V TO 7V COMON-MODE INPUT VOLTAGE RANGE LVTTL LOGIC INPUT THRESHOLDS SOP DESCRIPTION The ST3293 is a high-speed RS-422 transceiver with an emphasis circuitry on the driver which allows reliable long distance communication at high data rate by reducing inter symbolic interference. The diffe.

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ST3293 RS-422 HIGH SPEED TRANSCEIVER WITH DIGITAL EMPHASIS s s s s s FULL DUPLEX COMMUNICATIONS DEVICE RS-422 PROGRAMMABLE EMPHASIS INCREASES THE DISTANCE AND DATA RATE HIGH SPEED: DATA RATE UP TO 25Mbps -7V TO 7V COMON-MODE INPUT VOLTAGE RANGE LVTTL LOGIC INPUT THRESHOLDS SOP DESCRIPTION The ST3293 is a high-speed RS-422 transceiver with an emphasis circuitry on the driver which allows reliable long distance communication at high data rate by reducing inter symbolic interference. The differential amplitude of the ST3293 is digitally programmable in 7 steps through 3 control pins. The emphasis reduces the inter symbolic interference by increasing the signal amplitude under the micro control and counteracting the effects of the cable with the varying data stream. The ST3293 is a full duplex device that operates from a single +5V supply. It ORDERING CODES Type ST3293BD ST3293BDR Temperature Range -40 to 85 °C -40 to 85 °C Package features driver output short circuit current limiting and an open circuit fail-safe receiver input. The PE input can be used as an emphasis enable. The PE held LOW disable the emphasis instead set to HIGH enable the emphasis with the configuration on C0, C1 and C2 when DI change logic level. The DI input can direct drive the outputs with a fixed emphasis or without emphasis as shown in the timing diagram. Comments 50 parts per tube / 20 tube per box 2500 parts per reel SO-14 (Tube) SO-14 (Tape & Reel) January 2003 1/11 ST3293 PIN CONFIGURATION PIN DESCRIPTION PlN N° 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SYMBOL C0 C1 C2 PVCC RO DI PGND Y Z B A PE LGND LVCC Emphasis Control Input 0 Emphasis Control Input 1 Emphasis Control Input 2 Supply Voltage Receiver Output Driver Input Ground Non-inverting Driver Output Inverting Driver Output Inverting Receiver Input Non-inverting Receiver Input Emphasis Enable Ground Supply Voltage NAME AND FUNCTION TRUTH TABLE TRANSMITTING INPUTS INPUTS PE L H H X= Don’t Care; Z=High Impedance OUTPUTS EMPHASIS STATUS DI X 0->1 1->0 PECTRL L H H Disabled Enabled Enabled 2/11 ST3293 EMPHASIS CONTROL INPUT INPUTS PE = HIGH C0 L L L L H H H H C1 L L H H L L H H C2 L H L H L H L H DRIVER EMPHASIS FACTOR (DEF) RL = 100 Ω 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 ABSOLUTE MAXIMUM RATINGS Symbol VCC Supply Voltage C0, C1, Control Input Voltage C2, DI, PE Y, Z A, B RO PD TJ Tstg ESD Driver Output Voltage VCC = 0V or VOUT = Z-state Receiver Input Voltage Receiver Output Voltage Continuous Total Power Dissipation (SO-14) Operating Junction Temperature Range Storage Temperature Range Human Boby Model (Receiver Inputs vs GND) Parameter Value -0.5 to 7 -0.5 to 7 -0.5 to 7 -14 to 14 -0.5 to (VCC + 0.5) 0.5 -40 to 150 -65 to 150 ±1 Unit V V V V V W °C °C KV Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. RECOMMENDED OPERATING CONDITIONS Symbol VCC VIH VIL IIN ICC TA Parameter Supply Voltage High Level Logic Input Voltage Low Level Logic Input Voltage Input Current of Logic Input Supply Current Operating Temperature Range C0, C1, C2, DI, PE C0, C1, C2, DI, PE C0, C1, C2, DI, PE No Load -40 Test Conditions Min. 4.75 2 0 Typ. Max. 5.25 VCC 0.8 ±2 4 85 Unit V V V µA mA °C 3/11 ST3293 DRIVER ELECTRICAL CHARACTERISTICS (VCC = 5V ± 5%, -40°C < TA < 85°C, unless otherwise noted. Typical values are referred to Ta = 25°C) Symbol |VOD| |VOD1| DPER DEF |VOPD| ∆VOD VOC ∆VOC Parameter Differential Output Voltage Differential Output Voltage without Emphasis Differential Output Emphasis Step Precision Differential Output Emphasis Factor Differential Driver Output with Emphasis Change in Magnitude of Differential Output Voltage Driver Common-Mode Output Voltage Change in Magnitude of Common Mode Output Voltage Output Leakage Current (Y and Z) Driver Short Circuit Output Current No Load R = 100 Ω, PE = Low See Truth Table See Truth Table R = 100 Ω, DEF = 1.1 R = 100 Ω, DEF = 1.7 R = 100 Ω, All DEF values R = 100 Ω, All DEF values R = 100 Ω Test Conditions Min. 2 2 0.9 1 2.52 3.85 0 VCC/2 0 2.32 Typ. Max. VCC 2.8 1.1 2 V 0.2 3.5 0.2 V V V Unit V V -0.2 1 -0.2 IOFF IOSD VCC = GND VO = 6V VO = 0V, C0 = C1 = C2 = 0 -30 0.1 -50 ±100 -150 µA mA RECEIVER DC ELECTRICAL CHARACTERISTICS (VCC = 5V ± 5%, -40°C < TA < 85°C, unless otherwise noted. Typical values are referred to Ta = 25°C) Symbol VTH VHYST VOL VOH IIN RIN Parameter Receiver Differential Threshold Voltage Receiver Input Hysteresis Low Level Output Voltage High Level Output Voltage Input Current Receiver Input Resistance Test Conditions -7V ≤ VCM ≤ 7V VCM = 0V IOL = 4mA IOH = -4mA VIN=10V, Other Input = GND VIN=10V, Other Input = GND -7V ≤ VCM ≤ 7V, VCC = 0V 12 GND 3.7 Min. -200 50 0.2 4.7 0.32 -0.5 24 0.4 VCC 1.5 -2.5 KΩ Typ. Max. 200 Unit mV mV mV mV mA 4/11 ST3293 SWITCHING CHARACTERISTICS (VCC = 5V ± 5%, -40°C < TA < 85°C, unless otherwise noted. Typical values are referred to Ta = 25°C) Symbol tDPLH tDPHL Parameter Test Condit.


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