HD74LS243

HD74LS243 Quadruple Bus Transceivers (with three-state outputs) REJ03D0462–0300 Rev.3.00 Jul.15.2005 Features Ordering Information Part Name Package Type HD74LS243FPEL SOP-14 pin (JEITA) Package Code (Previous Code) PRSP0014DF-B (FP-14DAV) Package Abbreviation FP Taping Abbreviation (Quantity) EL (2,000 pcs/reel) Pin Arrangement GAB 1 NC 2 1A 3 2A 4 3A 5 4A 6 GND 7 (Top view) 14 VCC 13 GBA 12 NC 11 1B 10 2B 9 3B 8 4B Function Table Control input Data port status GAB GBA A B H H Output Input LH * H L Isolated Isolated L L Input Output Notes: 1. H; high level, L; low level 2. *; Possibly destructive oscillation may occur if the transceivers are enabled in both directions at once. Rev.3.00, Jul.15.2005, page 1 of 6 HD74LS243 Block Diagram GAB A GBA Transceiver (1/4) B Absolute Maximum Ratings Item Symbol Ratings Supply voltage VCC 7 Input voltage GAB, GBA A, B VIN VIN 7 5.5 Power dissipation PT 400 Storage temperature Tstg –65 t...