IT8687R ETC, IT8687R Datasheet
IT8687R
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IT8687R Summary of contents
Page 1
... IT8687R I/O Buffer Chip Preliminary Specification V0.6 ...
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... On page 5, change the Max from -1 to 0.9. On page 5, change the Conditions of V Type Buffer from I =18mA to “ page 5, change the Conditions of V Type Buffer from I =-6mA to “ IT8687R Page No ISH Type Buffer Type Buffer ISH Type Buffer 5 IL ...
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... Signal Names (by pin numbers in alphabetical order) 6-1 ...
Page 4
... Supports two (2) RS-232 serial ports n Very low power consumption (150mW) n Supports one (1) crystal oscillator clock generator 2. General Description IT8687R integrates six (6) line drivers, ten (10) line receivers, one ISA signal encoder, one (1) UART signal-mixing control logic, and one 24/48 MHz clock generator. The ISA signals; (1) SA12, SA13, ...
Page 5
... RI2# RAD0,RAD1 RAD2 X1 X2 Line Multiplexer Drivers COM1,2 signals mixer Line Receivers ISA signals encoder Crystal Oscillator Amplifier 2 IT8687R NRTS1, NDTR1, NTX1 NRTS2, NDTR2, NTX2 MODE NRX1, NCTS1 NDSR1, NRLSD1 NRI1, NRX2, NCTS2 NDSR2, NRLSD2 NRI2 RESET, AEN DACK0#, DACK1# DACK2#, ...
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... IT8687R Pin Description Table 5-1. Signal Names (by pin numbers in alphabetical order) Pin No. Symbol I/O 1 UIF4/LTX1 2 UIF3/LRTS1 3 UIF2/LRLSD1 O18 4 UIF1/LRX1 O18 5 UIF0/LDTR1 7 CLKOUT RAD2/LDSR1 O18 11 RAD1/LCTS1 O18 12 RAD0/LRI1 O18 14 DACK3#/ LRLSD2 I/O18 15 DACK2#/ LRX2 I/O18 16 DACK1# 17 DACK0#/ LTX2 18 AEN/LDSR2 I/O18 ...
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... Serial port 1 RLSD line receiver input Serial port 1 DTR line driver output Serial port 1 RTS line driver output Serial port 1 TX line driver output Primary function is selected when this pin is low; secondary function is selected when it is high. No Connection Ground +5V power -12V power +12V power 4 IT8687R ...
Page 8
... Exposure to the absolute maximum rating conditions for extended periods may affect device reliability. Min. Typ. Max. 10 -10 0.7 3.0 10 -10 0.4 2.4 0.4 2.4 10 -10 0.9 3 IT8687R Unit Conditions VCC VCC 8mA ...
Page 9
... RAD0-2 t5 UIF4 to DTR1/2, RTS1/2, TX1/2 t6 UIF4 to DTR1/2, RTS1/2, TX1/2 t7 UIF4 to UIF1,UIF2 t8 UIF4 to UIF1,UIF2 RESET DACK0-3# AEN SA15~12 RAD0-2 Min. Typ. Max 100 120 95 110 IT8687R Unit ...
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... UIF4 t7 UIF2 UIF1 t8 7 IT8687R ...
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... Typ. (0.637 Max.) 15 Typ. (16.18 Max.) 0.295 0.005 7.49 0.025 0.006 0.64 0.370 NOM. 9.40 NOM. 0.408 0.012 10.36 0.030 0.010 0.76 0.057 0.008 1.45 0.035 Max. 0.89 Max. 0.004 Max. 0.10 Max for PC Board surface mount pad pitch design 1 8 IT8687R unit: inches/ Detail See Detail F 0.12 0.05 0.05 0.13 0.15 0.31 0.26 0.20 ...
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... Ordering Information Part No. Package IT8687R SSOP 48L 9 IT8687R ...