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ISDN-Controller T1 Booster

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The ISDN-Controller T1 Booster is an upgrading card to be mouunted into a ISDN-Controller T1 or ISDN-Controller T1-B. Each booster card adds 4 T450 transputers and 8MB of RAM. Both models can mount up to 3 cards, the T1-B already contains one card, so they can both be upgraded to 15 transputers and 33MB of RAM..


Lab@Home has an excellent T1-B research article also covering this card. (german)

Daily updated index of all ISDN-Controller T1 Booster websites. Last update: 2020-12-02 04:01 GMT.

Legend:   on = live URL.   -   host = hosted here.   -   arc = from archive.org.   -   nonpub = non public.   -   dead = dead link.   -   Bold = service portal.


Daily updated index of all ISDN-Controller T1 Booster downloads. Last update: 2020-12-02 04:53 GMT.

Legend:   on = live URL.   -   host = hosted here.   -   arc = from archive.org.   -   nonpub = non public.   -   dead = dead link.   -   Bold = latest firmware.


Daily updated index of ISDN-Controller T1 Booster part numbers. Last update: 2020-12-02 04:31 GMT. Click an EAN/GTIN or MPN to search the web for it.
If you know any part numbers not listed here yet, expecially OEM and country specific versions, then please get in touch.

Legend:   ok = supported   -   eos = EOS   -   sold = still sold   -   dead = not sold any more   -   Bold = maintained Icecat entry   -   Italic = logistic entry without datasheet


Selectors >> PSU-Selector >> ISDN-Controller T1 Booster   -   Showing recommended Power-Supply units.

PSU-Selector Type L. Min Max In Min Max Max Max Out Out Curr Pwr Out2 Out2 Curr2 Pwr2 Cap. Vend. Nick Alias
0 power supply units

Selectors >> Cable+Adapter-Selector >> ISDN-Controller T1 Booster   -   Showing recommended Cables+Adapters.

Cable+Adapter-Selector Type Length Wires Shield Conn1 Gender Conn2 Gender Conn3 Gender Conn4 Gender
0 cables and adapters


If you want to extend the gallery with own work then please get in touch. See also the Photography-Inspiration article.


The Versions section intends to compare different hardware revisions of a device.
If you could provide images of a revision not listet here yet then please get in touch.

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Selectors >> Components-Selector >> ISDN-Controller T1 Booster   -   Chips may occur multiple times if different types were found in probes.

Cat. Qty. Component Purpose Family Coden. Vendor Description
SoC 4x ST20450-X40S Transputer T400 ST 40MHz 32-bit RISC-Transputer without FPU
RAM 16x KM416V256DT-L6 DRAM D-512K Samsung FPM DRAM 60ns, 3.3V, 256K x 16bit = 512KB
Flash 1x AT28LV256-20TC EEPROM EEPROM-32K Microchip EEPROM, 32K x 8bit = 32KB
FPGA 4x PALLV22V10-7JC PAL 22V10 Lattice 24-Pin Programmable Array Logic
Misc 1x 74LVX240 Bus-Iface 74240 ST Octal Inverting Bus Buffer With 3-State Outputs, 5V Tolerant
Misc 1x 74FST3384 Bus-Iface 743384 ON Semi 10-Bit Low Power Bus Switch