DESCRIPTION
FEATURES
s
Differential D and Q
s
Extended 100E V
EE
range of 4.2V to 5.5V
s
VBB output for single-ended use
s
700ps max. propagation delay
s
High frequency outputs
s
Separate and common select
s
Internal 75K
input pulldown resistors
s
Available in 28-pin PLCC package
The SY10/100E457 are 3-bit differential 2:1
multiplexers. The fully differential data path makes the
devices ideal for multiplexing low skew clock or other
skew sensitive signals. Multiple V
BB
pins are provided to
ease AC coupling input signals.
The higher frequency outputs provide the device with
a >1.0GHz bandwidth to meet the needs of the most
demanding system clock.
Both separate selects and a common select are
provided to make the device well suited for both data
path and random logic applications.
TRIPLE DIFFERENTIAL
2:1 MULTIPLEXER
SY10E457
SY100E457
Rev.: C
Amendment: /1
Issue Date:
February, 1998
BLOCK DIAGRAM
D
0a
D
0a
Q
0
Q
0
V
BB
D
0b
D
0b
2:1
MUX
H
L
SEL
0
D
1a
D
1a
Q
1
Q
1
D
1b
D
1b
2:1
MUX
H
L
SEL
1
D
2a
D
2a
Q
2
Q
2
D
2b
D
2b
2:1
MUX
H
L
SEL
2
COMSEL
Pin
Function
D
n
[0:2], D
n
[0:2]
Differential Data Inputs
SEL
Individual Select Input
COMSEL
Common Select Input
V
BB
V
BB
Reference Output
Q[0:2], Q[0:2]
Differential Data Outputs
V
CCO
V
CC
to Output
PIN NAMES
PIN CONFIGURATION
18
17
16
15
14
13
12
5
6
7
8
9
10 11
26
27
28
1
2
3
4
TOP VIEW
PLCC
J28-1
25 24 23 22 21 20 19
V
CC
Q
1
Q
2
Q
2
Q
1
Q
0
Q
0
SEL
1
D
1a
V
EE
V
BB
D
1b
D
1a
D
1b
SEL
0
D
0b
D
0a
V
BB
V
CCO
D
0a
D
0b
D
2b
SEL
2
D
2a
D
2a
V
BB
COMSEL
D
2b
1
2
SY10E457
SY100E457
Micrel
DC ELECTRICAL CHARACTERISTICS
V
EE
= V
EE
(Min.) to V
EE
(Max.); V
CC
= V
CCO
= GND
T
A
= 0
C
T
A
= +25
C
T
A
= +85
C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
Condition
V
BB
Output Reference Voltage
V
--
10E
1.38
--
1.27 1.35
--
1.25
1.31
--
1.19
100E
1.38
--
1.26 1.38
--
1.26
1.38
--
1.26
I
IH
Input HIGH Current
--
--
150
--
--
150
--
--
150
A
--
I
EE
Power Supply Current
mA
--
10E
--
92
110
--
92
110
--
92
110
100E
--
92
110
--
92
110
--
106
127
V
PP
(
DC)
Input Sensitivity
50
--
--
50
--
--
50
--
--
mV
1
V
CMR
Common Mode Range
1.5
--
0
1.5
--
0
1.5
--
0
V
2
NOTES:
1. Differential input voltage required to obtain a full ECL swing on the outputs.
2. V
CMR
is referenced to the most positive side of the differential input signal. Normal operation is obtained when the input signals are within the V
CMR
range
and the input swing is greater than V
PP
(min.) and <1V.
AC ELECTRICAL CHARACTERISTICS
V
EE
= V
EE
(Min.) to V
EE
(Max.); V
CC
= V
CCO
= GND
T
A
= 0
C
T
A
= +25
C
T
A
= +85
C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
Condition
t
PLH
Propagation Delay to Output
ps
--
t
PHL
D (Diff)
375
475
650
375
475
650
375
475
650
D
325
475
700
325
475
700
325
475
700
SEL
350
500
725
350
500
725
350
500
725
COMSEL
375
525
750
375
525
750
375
525
750
t
skew
Within-Device Skew
--
40
--
--
40
--
--
40
--
ps
1
t
skew
Duty Cycle Skew t
PLH
t
PHL
--
10
--
--
10
--
--
10
--
ps
2
V
PP (AC)
Minimum Input Swing
150
--
--
150
--
--
150
--
--
mV
3
t
r
Rise/Fall Time
150
275
450
150
275
450
150
275
450
ps
--
t
f
2080%
NOTES:
1. Within-device skew is defined as identical transitions on similar paths through a device.
2. Duty cycle skew guarantee holds only for differential operation when the delays are measured from the cross point of the inputs to the cross point of the
outputs.
3. Minimum input swing for which AC parameters are guaranteed.
PRODUCT ORDERING CODE
Ordering
Package
Operating
Code
Type
Range
SY10E457JC
J28-1
Commercial
SY10E457JCTR
J28-1
Commercial
SY100E457JC
J28-1
Commercial
SY100E457JCTR
J28-1
Commercial
4
SY10E457
SY100E457
Micrel
MICREL-SYNERGY
3250 SCOTT BOULEVARD
SANTA CLARA
CA 95054
USA
TEL
+ 1 (408) 980-9191
FAX
+ 1 (408) 914-7878
WEB
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
2000 Micrel Incorporated
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