19-2757; Rev 0; 1/03
670MHz LVDS-to-LVDS and
Anything-to-LVDS 2:1 Multiplexers
General Description
The MAX9176/MAX9177 are 670MHz, low-jitter, low-
skew 2:1 multiplexers ideal for protection switching,
loopback, and clock distribution. The devices feature
ultra-low 68ps peak-to-peak deterministic jitter that
ensures reliable operation in high-speed links that are
highly sensitive to timing errors.
The MAX9176 has fail-safe LVDS inputs and an LVDS
output. The MAX9177 has 鈥渁nything鈥?differential inputs
(CML/LVDS/LVPECL) and an LVDS output. The output
can be put into high impedance using the power-down
input. The MAX9176 features fail-safe circuits that drive
the output high when a selected input is open, undriven
and shorted, or undriven and terminated. The MAX9177
has bias circuits that force the output high when a
selected input is open. The mux select and power-
down inputs are compatible with standard LVTTL/
LVCMOS logic.
The select and power-down inputs tolerate undershoot
of -1V and overshoot of V
CC
+ 1V. The MAX9176/
MAX9177 are available in 10-pin 碌MAX and 10-lead
thin QFN packages, and operate from a single 3.3V
supply over the -40擄C to +85擄C temperature range.
o
1.0ps
(RMS)
Jitter (max) at 670MHz
o
68ps
(P-P)
Jitter at 800Mbps Data Rate
o
3.3V Supply
o
LVDS Fail-Safe Inputs (MAX9176)
o
Anything Inputs (MAX9177) Accept
CML/LVDS/LVPECL
o
Select and Power-Down Inputs Tolerate -1.0V
and V
CC
+ 1.0V
o
Low-Power CMOS Design
o
10-Lead 碌MAX and QFN Packages
o
-40擄C to +85擄C Operating Temperature Range
o
Conform to ANSI TIA/EIA-644 LVDS Standard
o
IEC61000-4-2 Level 4 ESD Rating
Features
MAX9176/MAX9177
Applications
Protection Switching
Loopback
Clock Distribution
PART
MAX9176EUB
MAX9176ETB*
MAX9177EUB
MAX9177ETB*
Ordering Information
TEMP RANGE
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
PIN-PACKAGE
10 碌MAX
10 Thin QFN-EP**
10 碌MAX
10 Thin QFN-EP**
Functional Diagram appears at end of data sheet.
*Future
product鈥攃ontact factory for availability.
**EP
= Exposed paddle.
Pin Configurations
TOP VIEW
IN0+
1
INO-
GND
IN1+
IN1-
2
3
4
5
碌
MAX
10
OUT+
9
OUT-
V
CC
PD
SEL
IN0+
1
INO-
GND
IN1+
IN1-
2
3
4
5
EXPOSED
PAD
10
OUT+
9
8
7
6
OUT-
V
CC
PD
SEL
MAX9176
8
7
6
QFN
(LEADS UNDER PACKAGE)
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.