19-2141; Rev 0; 8/01
75 /100 /120 Switchable Termination
Networks
General Description
Features
The MAX3406/MAX3407/MAX3408 are general-purpose
line-terminating networks designed to change the termi-
nation value of a line, depending on the state of a digi-
tal control line, allowing the connection to a coaxial
cable or a twisted pair wire. These devices are switch-
able between 75 , 100 , and 120 . The MAX3406
can switch from 75 to 100 , the MAX3407 can switch
from 75 to 120 , and the MAX3408 can switch from
100 to 120 termination. Termination resistance val-
ues are guaranteed to 2.5ꢀ through -40ꢁ° to ꢂ85ꢁ°
and for signal levels of 3.6ꢃ.
ꢀ Available in 5-Pin SOT Package
ꢀ ±±25ꢀ ꢁeꢂiꢂsance Accꢃuacꢄ Oveu ꢅEsenꢆeꢆ
Tempeuasꢃue ꢁange
ꢀ -326V so +326V Inpꢃs Volsage ꢁange
ꢀ 50µA Sꢃpplꢄ Cꢃuuens (maE)
ꢀ Bipolau Inpꢃs ꢁange Off a Single Sꢃpplꢄ
ꢀ Swischable Teuminasion
75 ou 100 (MAX3406)
75 ou 1±0 (MAX3407)
100 ou 1±0 (MAX3408)
The MAX3406/MAX3407/MAX3408 consume only 50µA
supply current and are fully specified for operation from
a ꢂ4.5ꢃ to ꢂ5.5ꢃ power supply. These devices are avail-
able in a tiny 5-pin SOT23 package. All specifications
are guaranteed over the extended temperature range of
-40ꢁ° to ꢂ85ꢁ°.
Applications
Ordering Information
Telecom E1/T1/J1 °oax/Twisted Pair Termination
TꢅMP2
ꢁANGꢅ
PIN-
PACKAGꢅ
TOP
MAꢁK
PAꢁT
Data Routers
Telecom Racks
-40 C to +85 C
-40 C to +85 C
-40 C to +85 C
MAX3406EUK
MAX3407EUK
MAX3408EUK
5 SOT23-5
5 SOT23-5
5 SOT23-5
ADSV
ADSW
ADSX
ꢃideo Security
Industrial Networks
Ethernet Networks
Selector Guide
Pin Configuration
TOP VIEW
TꢅꢁMINATION
PAꢁT
ꢅNABLꢅ = 1
ꢅNABLꢅ = 0
V
1
2
3
5
4
A
B
CC
75
75
100
120
120
MAX3406EUK
MAX3407EUK
MAX3408EUK
MAX3406
MAX3407
MAX3408
100
GND
ENABLE
SOT±3-5
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.