MC100H680FNG ON Semiconductor

MC10H680, MC100H680 4Bit Differential ECL Bus to TTL Bus Transceiver Description The MC10H/100H680 is a dual supply 4bit differential ECL bus to TTL bus transceiver. It is designed to allow the system designer to no MC10H680, MC100H680 Table 1. PIN DESCRIPTIONS Pin Symbol Function 25 24 23 22 21 20 19 1 GT1 TTL Ground 1 T101 26 18 EIO3B 2 TIO0 TTL I/O Bit 0 GT2 27 17 V CCO4 3 TDIR TTL Direction Control 4 EDIR ECL Direction Control VT1 28 16 EIO3 5 EIO0 ECL I/O Bit 0 6 VCCO1 ECL V 1 (0 V) Outputs GT1 15 V CC 1 CCE 7 EIO0B ECL I/O Bit 0 Bar TIO0 2 14 EIO2B 8 V ECL Supply ( 5.2/4.5 V) EE 9 EIO1 ECL I/O Bit 1 TDIR 3 13 V CCO3 10 VCCO2 ECL V 2 (0 V) Outputs CC 11 EIO1B ECL I/O Bit 1 Bar EDIR412 EIO2 12 EIO2 ECL I/O Bit 2 56 7 8 9 10 11 13 VCCO3 ECL V 3 (0 V) Outputs CC 14 EIO2B ECL I/O Bit 2 Bar 15 V ECL V (0 V) CCE CC 16 EIO3 ECL I/O Bit 3 Figure 1. Pinout: PLCC28 (Top View) 17 VCCO4 ECL V 4 (0 V) Outputs CC 18 EIO3B ECL I/O Bit 3 Bar 19 ECEB ECL Chip Enable Bar Control 20 TCEB TTL Chip Enable Bar Control 21 TIO3 TTL I/O Bit 3 22 GT4 TTL Ground 4 23 VT2 TTL Supply 2 (5.0 V) 24 GT3 TTL Ground 3 25 TIO2 TTL I/O Bit 2 26 TIO1 TTL I/O Bit 1 27 GT2 TTL Ground 2 28 VT1 TTL Supply 1 (5.0 V) Table 2. TRUTH TABLE ECEB TCEB EDIR TDIR EIN EINB EOUT EOUTB TIN TOUT COMMENTS H X X X X X LC LC X Z ECL and TTL Outputs Disabled X H X X X X LC LC X Z ECL and TTL Outputs Disabled L L H X H LC NA H ECL to TTL Direction L L H X LC H NA L ECL to TTL Direction L L H X LC LC NA L ECL to TTL Direction (L L Condition) L L X H H LC NA H ECL to TTL Direction L L X H LC H NA L ECL to TTL Direction L L X H LC LC NA L ECL to TTL Direction (L L Condition) L L L L NA NA H LC H TTL to ECL Direction L L L L NA NA LC H L TTL to ECL Direction TDIR Direction Control TTL Levels ECEB Chip Enable Bar Control ECL Levels EIN ECL Input EDIR Direction Control ECL Levels TIN TTL Input EINB ECL Input Bar TCEB Chip Enable Bar Control TTL Levels TOUT TTL Output EOUT ECL Output EOUTB ECL Output Bar H HIGH L LOW LC ECL Low Cutoff (VTT = 2.0 V) X Dont Care Z High Impedance