product brief october 1998 quad differential drivers bdg1a, bdp1a, bdgla, BPNGA, bpnpa, and bppga features n pin-equivalent to the general-trade 26ls31 device, with improved speed, reduced power consumption, and significantly lower levels of emi n four line drivers per package n meets esdi standards n 2.0 ns maximum propagation delay n single 5.0 v 10% supply n operating temperature range: - 40 c to +125 c (wider than the 41 series) n 400 mbits/s maximum data rate n logic to convert ttl input logic levels to differen- tial, pseudo-ecl output logic levels n no line loading when v cc = 0 (bdg1a, bdp1a only) n high output driver for 50 w loads n <0.2 ns output skew (typical) n on-chip 220 w loads available n third-state outputs available n surge-protection to 60 v for 10 ms available (BPNGA, bpnpa, bppga) n available in four package types n esd performance better than the 41 series n lower power requirement than the 41 series description these quad differential drivers are ttl input-to- pseudo-ecl-differential-output used for digital data transmission over balanced transmission lines. all devices in this family have four drivers with a single enable control in a common package. these drivers are compatible with many receivers, including the lucent technologies microelectronics group 41 series receivers and transceivers. they are pin equivalent to the general-trade 26ls31, but offer increased speed, decreased power consumption, and significantly lower levels of electromagnetic inter- ference (emi). they replace the lucent 41 series drivers. the bdg1a device is the generic driver in this family and requires the user to supply external resistors on the circuit board for impedance matching. the bdgla is a low-power version of the bdg1a, reducing the power requirement by more than one half. bthe dgla features a 3-state output with a typ- ical third-state level of 0.2 v. the bdp1a is equivalent to the bdg1a but has 220 w termination resistors to ground on each driver output. this eliminates the need for external pull- down resistors when driving a 100 w impedance line. the BPNGA and bpnpa are equivalent to the bdg1a and bdp1a, respectively, except that a light- ning protection circuit has been added to the driver outputs. this circuit will absorb large transitions on the transmission lines without destroying the device. the bppga combines the features of the BPNGA and bpnpa. two of the gates have their outputs ter- minated to ground through 220 w resistors while the two remaining gates require external termination resistors. when the bdg1a and the bdp1a devices are pow- ered down, the output circuit appears as an open cir- cuit relative to the power supplies; hence, they will not load the transmission line. for those circuits with termination resistors, the line will remain impedance matched when the circuit is powered down. the BPNGA, bpnpa, bppga, and bdgla will load the transmission line, because of the protection circuit, when the circuit is powered down. the packaging options that are available for these quad differential line drivers include a 16-pin dip; a 16-pin, j-lead soj; a 16-pin, gull-wing soic; and a 16-pin, narrow-body, gull-wing soic.
lucent technologies inc. reserves the right to make changes to the product(s) or information contained herein without notice. n o liability is assumed as a result of their use or application. no rights under any patent accompany the sale of any such product(s) or information. copyright ? 1998 lucent technologies inc. all rights reserved printed in u.s.a. october 1998 pn99-003hsi (replaces pn98-185hsi) for additional information, contact your microelectronics group account manager or the following: internet: http://www.lucent.com/micro e-mail: docmaster@micro.lucent.com n. america: microelectronics group, lucent technologies inc., 555 union boulevard, room 30l-15p-ba, allentown, pa 18103 1-800-372-2447 , fax 610-712-4106 (in canada: 1-800-553-2448 , fax 610-712-4106) asia pacific: microelectronics group, lucent technologies singapore pte. ltd., 77 science park drive, #03-18 cintech iii, singap ore 118256 tel. (65) 778 8833 , fax (65) 777 7495 china: microelectronics group, lucent technologies (china) co., ltd., a-f2, 23/f, zao fong universe building, 1800 zhong shan xi road, shanghai 200233 p. r. china tel. (86) 21 6440 0468 , ext. 316 , fax (86) 21 6440 0652 japan: microelectronics group, lucent technologies japan ltd., 7-18, higashi-gotanda 2-chome, shinagawa-ku, tokyo 141, japan tel. (81) 3 5421 1600 , fax (81) 3 5421 1700 europe: data requests: microelectronics group dataline: tel. (44) 1189 324 299 , fax (44) 1189 328 148 technical inquiries: germany: (49) 89 95086 0 (munich), united kingdom: (44) 1344 865 900 (ascot), france: (33) 1 40 83 68 00 (paris), sweden: (46) 8 600 7070 (stockholm), finland: (358) 9 4354 2800 (helsinki), italy: (39) 02 6608131 (milan), spain: (34) 1 807 1441 (madrid) product brief october 1998 bdg1a, bdp1a, bdgla, BPNGA, bpnpa, and bppga quad differential drivers pin information bdg1a bdgla BPNGA bdp1a bpnpa bppga 12-2038b (f) 1 2 3 4 5 6 7 8 e 16 15 14 13 12 11 10 9 ai ao ao bo bo b1 gnd do v cc di do e co co ci a b c d 1 2 3 4 5 6 7 8 e 16 15 14 13 12 11 10 9 ai ao ao bo bo b1 gnd do v cc di do e co co ci a b c d 1 2 3 4 5 6 7 8 e 16 15 14 13 12 11 10 9 ai ao ao bo bo b1 gnd do v cc di do e co co ci a b c d figure 1. quad differential driver logic diagrams
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