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| TaNCapTM IEEE 1284 Integrated Filter Network QRC1284X2TM Series Welwyn Components * Single chip parallel port solution * Small 28-pin QSOP package * Built-in ESD protection into 17 lines * Highly integrated - Replaces 43 discretes * Proven TaNCapTM Thin film technology Electrical Data Resistors Tolerance TCR Operating temperature range Maximum power dissipation Operating voltage % ppm/C C watts volts 10 100 -40 to +85 0.1 per resistor 6 volts Capacitors 20 N/A -40 to +85 N/A The TaNCapTM QRC1284X2 is a single package solution designed for the IEEE1284 enhanced parallel port interface and other digital interface applications. This highly integrated TaNCapTM thin film technology network offers four different functions in a single 28-pin QSOP package. R1 is a pull-up resistor for, R2 is a series termination resistor and C is a low pass filter capacitor. ESD protection is provided for each termination line. The 28-pin in QSOP package offers a high level of integration in a single surface mount device. 43 discrete passive components are replaced by one IEEE 1284x2 filter network. The TaNCap series of resistor-capacitor networks are manufactured using military and space proven tantalum nitride thin film technology. For high reliability combined with superior performance. Schematic Gnd 28 27 26 25 24 23 22 21 Vcc 20 19 18 17 16 15 R1 R1 R1 R1 C R1 C R2 ds R1 C R2 ds R1 C R1 R1 C ds R1 C ds R1 C ds R2 R1 ds ds R1 C C R1 C ds ds R1 C ds R2 R1 C R1 ds C C ds C ds C ds R2 ds R2 ds C ds R2 R2 R2 1 2 3 4 5 ds 6 7 8 9 10 11 12 13 14 = ESD diode structure General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn's own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc Issue B * 03.02 (c) Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 82 TaNCapTM IEEE 1284 Integrated Filter Network QRC1284X2TM Series Welwyn Components QRC1284X2 Pin-Out Chart Signal (compatible model) Source Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Bi-directional Peripheral Peripheral Peripheral Peripheral Peripheral Host Host Host Host Termination Resistor R2 X X X X X X X X Filter Capacitor X X X X X X X X X X X X X X X Pull-up Resistor R1 X X X X X X X X X X X X X X X X X 1284x2 Pin 25 24 23 21 19 18 17 16 15 12 10 8 27 1 2 26 28 ESD* Protection 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV 1284x2 Pin 4 5 6 7 9 11 13 14 ESD* Protection 8KV 8KV 8KV 8KV 8KV 8KV 8KV 8KV Circuit Diagram 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data 8 nAck Busy PError Select nFault nInit nSelectln nStrobe nAutoFd X X X 3 8KV 1 2 * Human body model per MIL-STD-883 Method 3015. Circuit diagram 1 Vcc R1 R2 8KV ESD Protection Circuit diagram 2 Vcc R1 C ds 8KV ESD Protection C ds 8KV ESD Protection For specific pin numbers, refer to Pin-out table above For specific pin numbers, refer to Pin-out table above ds = ESD diode structure (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com Issue B * 03.02 83 |
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