DS2290 Datasheet, PDF (1/9 Pages) Dallas Semiconductor – T1 Isolation Stik

DS2290
DS2290
T1 Isolation Stik
FEATURES
• Protected interface for connecting equipment to T1
lines
• Provides 800 volts of surge protection and 1500 volts
of isolation
• FCC Part 68 registered
• Meets TR 62411 and T1.403–1989 for transmit pulse
characteristics
• Line build outs of 0, –7.5, and –15 dB
• Companion to the DS2291 T1 Long Loop Stik
• Connects to a standard 30–pin single in–line connec-
tor
• Single +5V supply
• Compatible with the DS2180A and DS2141A T1
Tranceivers
PIN ASSIGNMENT
VDD 1
VDD 2
LCLK 3
LPOS 4
LNEG 5
TCLK 6
TPOS 7
TNEG 8
LB 9
NC 10
LB2 11
LB1 12
LB0 13
TAIS 14
B8ZS 15
NC 16
NC 17
NC 18
RX+ 19
RX– 20
NC 21
GND 22
GND 23
NC 24
RXTIP 25
LPWR+ 26
RXRING 27
TXTIP 28
LPWR– 29
TXRING 30
(ACTUAL SIZE)
DESCRIPTION
The DS2290 T1 Isolation Stik provides all the surge and
isolation protection that is necessary to connect a piece
of equipment to a T1 line. It offers a function similar to
that provided by a Data Access Arrangement (DAA)
when a modem is connected to a phone line. The
DS2290 is FCC Part 68 pre–registered so the user can
connect equipment to T1 lines without any further test-
ing or qualification. It contains onboard waveshaping
circuitry that creates transmit pulses meeting the latest
T1 specifications including TR 62411 (Accunet* T1.5
Service Description and Interface Specifications, – De-
cember 1990) and T1.403–1989 (Carrier to Carrier In-
stallation – DS1 Metallic Interface). Applications in-
clude Channel Service Units and similar equipment that
requires a fully protected interface.
* Service mark of AT&T Communications
022798 1/9