Token Ring Transceiver Module EPT7075 ELECTRONICS INC. • Designed for Pericom PIC 3020 • [Also recommecnded for PIC 3000A] • Optimized for 120Ω Cable Operations • • Enhanced Common Mode Rejection Capability • • Complies with or exceeds IEEE 802.5 Requirements • Electrical Parameters @ 25° C Impedance Insertion Loss (dB Max.) [Xmit/Rcv] Chip Side 400/120 1-16 MHz Cable Side Xmit 120 -.6 Return Loss (dB Min.) 32 MHz Rcv Xmit -1 36 MHz Rcv Xmit -7 -20 -7 1-6 MHz 6-17 MHz Rcv Xmit Rcv -20 -15 -18 Common Mode Rejection (dB Min.) Xmit Rcv -12 -15 17-25 MHz 1-30 MHz Xmit Rcv Xmit Rcv -8 -10 -65 -40 30-100 MHz 100-200 MHz Xmit Rcv -30 -30 Crosstalk (dB Min.) 200-300 MHz Xmit Rcv Xmit Rcv -30 -30 -30 -30 1-30 MHz -35 Schematic 3 16 TXO+ TX1+ 6 11 400Ω TXCT 5 120Ω LPF 10 15 TXO- TX1- 7 4 17 RX1+ RX0+ 1 13 120Ω LPF 120Ω 12 RX0- 2 18 RX1- 1:1 Dimensions Package A Dim. A B C D E F G H I J B Pin 1 I.D. PCA EPT7075 Date Code C H G D PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 E F (Inches) Min. Max. Nom. (Millimeters) Min. Max. Nom. 1.890 .240 .510 1.300 .010 .125 .100 .015 .008 .035 37.85 6.73 11.43 33.02 .254 3.18 2.54 .381 .203 3.43 1.900 .250 .520 Typ. .030 .150 Typ. .021 .012 Typ. 38.10 6.99 11.68 Typ. .381 3.56 Typ. .533 .305 .356 I J CST7075a Rev. 10/17/96 Product performance is limited to specified parameters. Data is subject to change without prior notice. TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com