
General Description
The MAX9384 fully differential dual 2:1 multiplexer
(mux) features extremely low propagation delay (560ps
max) and output-to-output skew (40ps max). The
device is ideal for clock and data multiplexing applica-
tions. The two 2:1 muxes are controlled individually or
simultaneously through mux select inputs COM_SEL,
SEL0, and SEL1. The mux select inputs are compatible
with ECL/PECL logic, and are referenced to on-chip
outputs V
BB0
and V
BB1
, nominally V
CC
- 1.33V.
The differential inputs D,
D
can be configured to accept
a single-ended signal when the unused complementary
input is connected to the on-chip supply output V
BB
as
a reference voltage. All the differential inputs have bias
and clamp circuits that force the outputs to a low
default when the inputs are left open or at V
EE
. The sin-
gle-ended mux select inputs have pulldowns to V
EE
,
providing low default inputs when the select inputs are
left open.
The device operates with a wide supply range (V
CC
-
V
EE
) of +3.0V to +5.5V for PECL or -3.0V to -5.5V for
ECL, and is pin compatible with the MC100LVEL56 and
MC100EL56. The MAX9384 is offered in a 20-pin wide
SO package, and is specified for operation from -40
°
C
to +85
°
C.
Applications
High-Speed Telecom, Datacom Applications
Central-Office Backplane Clock Distribution
Access Multiplexers (DSLAM/DLC)
Features
o
40ps
P-P
Deterministic Jitter
o
440ps Differential Propagation Delay
o
12ps Output-to-Output Skew
o
Individual and Common Select
o
+3.0V to +5.5V Supplies for Differential
LVPECL/PECL
o
-3.0V to -5.5V Supplies for Differential LVECL/ECL
o
Outputs Low for Inputs Open or at V
EE
o
>2kV ESD Protection (Human Body Model)
o
Pin Compatible with MC100LVEL56 and
MC100EL56
M
ECL/PECL Dual Differential 2:1 Multiplexer
________________________________________________________________
Maxim Integrated Products
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.
1
Ordering Information
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
V
CC
SEL0
D0b
V
BB0
V
BB1
D0a
TOP VIEW
COM_SEL
SEL1
V
CC
Q1
D1a
D1b
12
11
9
10
V
EE
MAX9384
SO
DOa
DOb
D1a
D1b
Q1
Q0
Q0
Pin Configuration
19-2484; Rev 0; 7/02
Functional Diagram appears at end of data sheet.
PART
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
20 Wide SO
MAX9384EWP