Micrel, Inc.
5V/3.3V DUAL DIFFERENTIAL
2:1 MULTIPLEXER
SY100EL56V
SY100EL56V
FEATURES
s
3.3V and 5V power supply options
s
440ps propagation delay
s
Separate and common select
s
High bandwidth output transitions
s
Internal 75K
Ω
input pull-down resistors
s
Available in 20-pin SOIC package
DESCRIPTION
The SY100EL56V is a dual, fully differential 2:1
multiplexer. The differential data path makes the device
ideal for multiplexing low skew clock or other skew
sensitive signals. Multiple V
BB
pins are provided to ease
AC coupling input signals.
The device features both individual and common select
inputs to address both data path and random logic
applications.
The differential inputs have special circuitry which
ensures device stability under open input conditions.
When both differential inputs are left open the D input
will pull down to V
EE
, the /D input will bias around V
CC
/2
forcing the Q output LOW.
PIN NAMES
Pin
D0
a
–D1
a
D0
b
–D1
b
SEL0–SEL1
COM_SEL
Q
0
–Q
1
/Q
0
–/Q
1
Input Data a
Input Data b
Individual Select Input
Common Select Input
True Outputs
Inverted Outputs
Function
TRUTH TABLE
SEL
H
L
Data
a
b
M9999-031306
hbwhelp@micrel.com or (408) 955-1690
Rev.: H
Amendment: /0
1
1
Issue Date: March 2006
MICREL [ MICREL SEMICONDUCTOR ]
