Hi there!
I uploaded some datasheets to IC of the Advantest R3273 PC board
1 mPC4072 J-FET INPUT LOW-NOISE DUAL OPERATIONAL AMPLIFIER
https://datasheet.octopart.com/UPC4072C-NEC-datasheet-101880.pdf2 DM74LS245 3-STATE Octal Bus Transceiver
https://pdf1.alldatasheet.com/datasheet-pdf/view/51057/FAIRCHILD/74LS245.html3 74VHC245 Octal Bidirectional Transceiver with 3-STATE Outputs
https://pdf1.alldatasheet.com/datasheet-pdf/view/50653/FAIRCHILD/74VHC245.html4 AD7538KR LC2 MOS Microprocessor-Compatible 14-Bit DAC
https://eu.mouser.com/datasheet/2/609/AD7538-877338.pdf5 LT1027/E5 LT1027 is a precision reference with extra-low drift
https://www.analog.com/media/en/technical-documentation/data-sheets/1027fcs.pdf6 LV245A SN74LV245AT OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
https://pdf1.alldatasheet.com/datasheet-pdf/view/192063/TI/LV245A.html7 AC125 74AC125 Quad Buffer with 3-STATE Outputs
https://pdf1.alldatasheet.com/datasheet-pdf/view/50119/FAIRCHILD/74AC125.html8 HD153110 Color Palette with Triple 8-bit DA Converter
http://www.datasheetq.com/datasheet-download/883579/1/Hitachi/HD1531109 M38802M2-220HP Microcomputer for key-board control(Mask ROM:ROM-8K,RAM-384K)
https://www.datasheets360.com/pdf/-641731554192190842010 M514260C-60J 262,144-Word x 16-Bit DYNAMIC RAM
https://datasheet4u.com/datasheet-parts/MSM514260C-datasheet.php?id=50557211 HM538253BTT-7 262,144-word x 8-bit Multiport CMOS Video RAM
https://www.datasheets360.com/pdf/361652369388507277112 SIM-65802GN105-1 Specialized microcircuit
13 SH-2 HD6417604F28 (HitaŃhi) Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family
https://www.renesas.com/us/en/doc/products/mpumcu/001/rej09b0171_superh.pdf http://www.farnell.com/datasheets/44795.pdf14 RTC-62423 4-bit REAL TIME CLOCK MODULE
https://pdf1.alldatasheet.com/datasheet-pdf/view/272654/EPSONTOYOCOM/RTC-62423.html15 7673 ICL7673 Automatic Battery Back-Up Switch
https://www.renesas.com/jp/ja/www/doc/datasheet/icl7673.pdf16 TC551001CF-70L 8-BIT STATIC RAM
https://pdf1.alldatasheet.com/datasheet-pdf/view/31713/TOSHIBA/TC551001CF-70L.html17 74VHC595 8-Bit Shift Register with Output Latches
https://www.mouser.com/datasheet/2/149/74VHC595-101446.pdf18 74AC157 Quad 2-Input Multiplexer
https://pdf1.alldatasheet.com/datasheet-pdf/view/50125/FAIRCHILD/74AC157.html19 74VHC04 HEX INVERTER
https://pdf1.alldatasheet.com/datasheet-pdf/view/21830/STMICROELECTRONICS/74VHC04.html20 74LV245A Octal bus transceiver; 3-state
https://assets.nexperia.com/documents/data-sheet/74LV245A.pdf21 HM5165165FTT6 64M EDO DRAM (4-Mword x 16-bit) 8k refresh/4k refresh
https://datasheetspdf.com/pdf-file/526944/HitachiSemiconductor/HM5165165F/122 TMS99C14AFNL GPIB TO SERIAL CONVERTER
https://accelconf.web.cern.ch/ica05/proceedings/pdf/P3_047.pdf23 LSI1032E High-Density Programmable Logic
https://datasheetspdf.com/pdf-file/684967/LatticeSemiconductor/LSI1032E/124 PC97338V ACPI 1.0 and PC98/99 Compliant SuperI/O
https://pdf1.alldatasheet.com/datasheet-pdf/view/9318/NSC/PC97338VJG.html25 MC68340PV25E High-performance 32-bit integrated processor with direct memory access (DMA)
https://www.datasheets360.com/pdf/-105530422867307166226 29F400BC-90PF1N 4M (512K x 8/256K x 16) BIT FLASH MEMORY
https://datasheetspdf.com/pdf-file/1114535/Fujitsu/MBM29F400BC-90/127 SIM-190G12S (90G12F0009) Specialized microcircuit
28 SIM-65801GD082-1 Specialized microcircuit
29 74VHC595 8-Bit Shift Register with Output Latches
https://www.mouser.com/datasheet/2/149/74VHC595-101446.pdf 30 MB88346B R-2R TYPE 8-BIT D/A CONVERTER WITH OPERATIONAL AMPLIFIER OUTPUT BUFFERS
http://pdf.datasheetcatalog.com/datasheet/FujitsuMicroelectronics/mXrtvyw.pdf31 MAX4581 Low-Voltage, CMOS Analog Multiplexers/Switches
https://datasheets.maximintegrated.com/en/ds/MAX4581-MAX4583.pdf32 QUALCOMM CD90-24093-1 Specialized microcircuit
33 HI5735KCB 12-Bit, 80 MSPS, High Speed Video D/A Converter
https://www.renesas.com/cn/en/www/doc/datasheet/hi5735.pdf34 LM6172 Dual High Speed, Low Power, LowDistortion,Voltage Feedback Amplifiers
https://pdf1.alldatasheet.com/datasheet-pdf/view/9004/NSC/LM6172.html35 SN75160B Octal General-Purpose Interface Bus Transceiver (Rev. B)
https://www.ti.com/lit/ds/symlink/sn75160b.pdf36 SN75162B OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS
http://pdf.datasheetcatalog.com/datasheet/texasinstruments/sn75162b.pdf37 LM2991S Negative Low Dropout Adjustable Regulator
https://pdf1.alldatasheet.com/datasheet-pdf/view/545554/TI/LM2991S.html38 LM2990S (-5.0V) Negative Low-Dropout Regulator
https://www.promelec.ru/fs/sources/e6/fd/69/62/d4f1d60f4e4c09941d668328.pdf39 UPC1663 DC to VHF WIDEBAND DIFFERENTIAL INPUT AND OUTPUT AMPLIFIER IC
https://pdf1.alldatasheet.com/datasheet-pdf/view/6675/NEC/UPC1663.html40 961EUA (MAX961EUA-T) Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators
https://pdf1.alldatasheet.es/datasheet-pdf/view/434192/MAXIM/MAX961EUA-T.html41 74VHC14 Hex Schmitt Inverter
https://pdf1.alldatasheet.com/datasheet-pdf/view/223002/FAIRCHILD/74VHC14.html42 MC145583V 3.3 VOLT ONLY DRIVER / RECEIVER WITH AN INTEGRATED STANDBY MODE
https://pdf1.alldatasheet.com/datasheet-pdf/view/158429/MOTOROLA/MC145583VF.html43 K6T1008C2E-GB70 128Kx8 bit Low Power CMOS Static RAM
https://pdf1.alldatasheet.com/datasheet-pdf/view/37113/SAMSUNG/K6T1008C2E-GB70.html44 M51953B Voltage Detecting, System Resetting IC Series
https://pdf1.alldatasheetru.com/datasheet-pdf/view/196325/RENESAS/M51953B.html Please pay attention to item
#15 ICL7673 Automatic Battery Back-Up Switch
How does it work:
This item give You possibility for Hot-replace the battery. You should made this very careful.
Best regards, 3G57