TRIPLE DIFFERENTIAL
2:1 MULTIPLEXER
SY10E457
SY100E457
FEATURES
s
Differential D and Q
s
Extended 100E V
EE
range of –4.2V to –5.5V
s
s
s
s
VBB output for single-ended use
700ps max. propagation delay
High frequency outputs
Separate and common select
DESCRIPTION
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.
s
Internal 75K
Ω
input pulldown resistors
s
Available in 28-pin PLCC package
BLOCK DIAGRAM
PIN CONFIGURATION
H
2:1
MUX
SEL
2
D
2a
D
2a
V
BB
Q
0
Q
0
D
0b
D
0b
SEL
0
L
25 24 23 22 21 20 19
SEL
1
D
1a
D
1a
D
2b
COMSEL
D
0a
D
0a
D
2b
26
27
28
1
2
3
4
5
6
7
8
9
10 11
18
17
Q
2
Q
2
V
CC
Q
1
Q
1
Q
0
Q
0
D
1a
D
1a
D
1b
D
1b
SEL
1
H
2:1
MUX
V
EE
Q
1
Q
1
V
BB
D
1b
D
1b
TOP VIEW
PLCC
J28-1
16
15
14
13
12
L
D
0a
D
2a
D
2a
D
2b
D
2b
SEL
2
H
2:1
MUX
Q
2
Q
2
L
PIN NAMES
Pin
D
n
[0:2], D
n
[0:2]
Function
Differential Data Inputs
Individual Select Input
Common Select Input
V
BB
Reference Output
Differential Data Outputs
V
CC
to Output
COMSEL
V
BB
SEL
COMSEL
V
BB
Q[0:2], Q[0:2]
V
CCO
SEL
0
V
CCO
Rev.: C
D
0a
V
BB
D
0b
D
0b
Amendment: /1
1
Issue Date: February, 1998
Micrel
SY10E457
SY100E457
DC ELECTRICAL CHARACTERISTICS
V
EE
= V
EE
(Min.) to V
EE
(Max.); V
CC
= V
CCO
= GND
T
A
= 0
°
C
Symbol
V
BB
Parameter
Output Reference Voltage
10E
100E
Input HIGH Current
Power Supply Current
10E
100E
V
PP
(
DC)
V
CMR
Input Sensitivity
Common Mode Range
—
—
50
–1.5
92
92
—
—
110
110
—
0
—
—
50
–1.5
92
92
—
—
110
110
—
0
—
—
50
–1.5
92
106
—
—
110
127
—
0
mV
V
1
2
Min.
–1.38
–1.38
—
Typ.
—
—
—
Max.
Min.
T
A
= +25
°
C
Typ.
—
—
—
Max.
–1.25
–1.26
150
T
A
= +85
°
C
Min. Typ.
–1.31
–1.38
—
—
—
—
Max.
–1.19
–1.26
150
µA
mA
—
—
Unit
V
–1.27 –1.35
–1.26 –1.38
150
—
Condition
—
I
IH
I
EE
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
Symbol
t
PLH
t
PHL
Parameter
Propagation Delay to Output
D (Diff)
D
SEL
COMSEL
Within-Device Skew
Duty Cycle Skew t
PLH
–t
PHL
Minimum Input Swing
Rise/Fall Time
20–80%
Min.
375
325
350
375
—
—
150
150
Typ.
475
475
500
525
40
±10
—
275
Max.
650
700
725
750
—
—
—
450
T
A
= +25
°
C
Min. Typ.
375
325
350
375
—
—
150
150
475
475
500
525
40
±10
—
275
Max.
650
700
725
750
—
—
—
450
T
A
= +85
°
C
Min. Typ.
375
325
350
375
—
—
150
150
475
475
500
525
40
±10
—
275
Max.
650
700
725
750
—
—
—
450
ps
ps
mV
ps
1
2
3
—
Unit
ps
Condition
—
t
skew
t
skew
V
PP (AC)
t
r
t
f
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
Code
SY10E457JC
SY10E457JCTR
SY100E457JC
SY100E457JCTR
Package
Type
J28-1
J28-1
J28-1
J28-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
2
Micrel
SY10E457
SY100E457
MICREL-SYNERGY
TEL
3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA
FAX
+ 1 (408) 980-9191
+ 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
4
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