Micrel, Inc.
8-INPUT PECL
DIFFERENTIAL MUX
WITH TTL SELECTS
DESCRIPTION
SY100S863
SY100S863
FEATURES
s
Low skew
s
Differential PECL inputs
s
Differential cut-off PECL outputs capable of driving
25
Ω
load for driving data bus
s
Tri-state TTL output
s
TTL select and enable input
s
Internal 75K
Ω
PECL input pull-down resistors
s
PECL I/O fully compatible with industry standard
s
Available in 28-pin PLCC package
The SY100S863 is a PECL 8:1 multiplexer designed for
use in new, high-performance PECL systems. It has
differential PECL outputs and a standard TTL output. The
TTL select inputs (SEL
0
, SEL
1
, SEL
2
) determine which one
of the eight differential PECL data inputs (D
0
–D
7
) is
propagated to the outputs. The enable pin, EN, is provided
for expansion. When EN is at a TTL logic one level, both
PECL and TTL outputs are enabled. When the enable pin
is set to TTL logic zero level, both PECL outputs of the
differential pair are in cut-off and the TTL output is in a
three-state condition.
BLOCK DIAGRAM
D
0
(4)
D
0
(5)
D
1
(6)
D
1
(7)
D
2
(8)
D
2
(9)
D
3
(10)
D
3
(11)
D
4
(27)
D
4
(26)
D
5
(25)
D
5
(24)
D
6
(23)
D
6
(22)
D
7
(21)
D
7
(20)
PIN NAMES
Pin
D
0
, /D
0
– D
7
, /D
7
Q, /Q
Q
TTL
(17) Q
(18) Q
8:1
MUX
(13) Q
TTL
Function
Differential PECL Input Pairs
Differential PECL Outputs
TTL Output
Enable Input
Select Inputs
8 DIFFERENTIAL
PECL INPUTS
EN
SEL
0,1,2
EN (15)
SEL
0
(28)
SEL
1
(2)
TTL INPUTS
SEL
2
(3)
M9999-032406
hbwhelp@micrel.com or (408) 955-1690
Rev.: G
Amendment: /0
1
Issue Date: March 2006
Micrel, Inc.
SY100S863
PACKAGE/ORDERING INFORMATION
D
7
V
CCO
Ordering Information
Part Number
Package
Type
J28-1
J28-1
J28-1
J28-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Package
Marking
SY100S863JC
SY100S863JC
SY100S863JZ with
Pb-Free bar-line indicator
SY100S863JZ with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Matte-Sn
Matte-Sn
D
5
D
5
D
6
25 24 23 22 21 20 19
D
6
D
7
D
4
D
4
SEL
0
V
EE
SEL
1
SEL
2
D
0
26
27
28
1
2
3
4
5
6
7
8
9
10 11
18
17
16
Q
Q
V
CC
EN
V
CCT
Q
TTL
V
GT
SY100S863JC
SY100S863JCTR
(1)
SY100S863JZ
(2)
SY100S863JZTR
(1, 2)
Notes:
TOP VIEW
PLCC
J28-1
15
14
13
12
D
0
D
1
D
1
D
2
D
2
D
3
D
3
1. Tape and Reel.
2. Pb-Free package is recommended for new designs.
28-Pin PLCC (J28-1)
M9999-032406
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY100S863
TRUTH TABLE
EN
H
H
H
H
H
H
H
H
L
SEL
2
L
L
L
L
H
H
H
H
X
SEL
1
L
L
H
H
L
L
H
H
X
SEL
0
L
H
L
H
L
H
L
H
X
Q
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
Z
Q
TTL
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
Z
PECL DC ELECTRICAL CHARACTERISTICS
V
CC
= V
CCO
= V
CCT
= 5.0V
±
5%; V
EE
= V
GT
= GND
Symbol
V
OH
V
OL
V
OZ
V
IH
V
IL
I
IH
I
IL
I
CC
Parameter
Output HIGH Voltage
(1)
Output LOW Voltage
(1)
Cutoff Voltage
(1)
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
V
CC
Supply Current
Min.
3.975
3.17
—
3.835
3.17
—
0.50
—
Typ.
4.045
3.295
3
—
—
—
—
73
Max.
4.13
3.38
3.10
4.13
3.525
350
—
88
Unit
V
V
V
V
V
µA
µA
mA
V
IN
= V
IH
(Max.)
V
IN
= V
IL
(Min.)
Condition
Loading with 25Ω to 3V (V
CC
-2V)
Loading with 25Ω to 3V (V
CC
-2V)
Loading with 25Ω to 3V (V
CC
-2V)
Note:
1. Levels shown are for V
CCO
= 5.0V and will vary 1:1 with powers.
TTL DC ELECTRICAL CHARACTERISTICS
V
CC
= V
CCO
= V
CCT
= 5.0V
±
5%; V
EE
= V
GT
= GND
Symbol
V
OH
V
OL
V
IH
V
IL
I
IH
I
IL
V
IK
I
OS
I
OZHT
I
OZLT
Parameter
Output HIGH Voltage
Output LOW Voltage
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Input Clamp Voltage
Output Short Circuit Current
Tri-state Current Output HIGH
Tri-state Current Output LOW
Min.
2.4
—
2.0
0
—
–0.7
–1.2
–200
—
–700
Typ.
2.9
0.3
—
—
—
—
—
—
—
—
Max.
—
0.5
V
CC
0.8
1.0
—
—
–60
70
—
Unit
V
V
V
V
mA
mA
V
mA
µA
µA
V
IN
= 2.7V
V
IN
= 0.5V
I
IN
= –18mA
V
OUT
= 0V, V
CCT
= 5.5V
V
OUT
= 2.7V
V
OUT
= 0.5V
Condition
I
OH
= –3mA
I
OL
= 24mA
M9999-032406
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
SY100S863
PECL AC ELECTRICAL CHARACTERISTICS
V
CC
= V
CCO
= +5.0V
±
5%; V
EE
= V
GT
= GND
T
A
= 0
°
C
Symbol
t
PLH
t
PHL
Parameter
Propagation Delay
(1),(2)
D to Q
SEL
0
to Q
SEL
1
to Q
SEL
2
to Q
EN to Q
(3)
(Cutoff to HIGH)
EN to Q
(3)
300
(HIGH to Cutoff)
Output Rise/Fall Times
(2)
20% to 80%
Min.
500
300
300
300
300
—
300
Typ.
—
—
—
—
—
1300
400
Max.
900
2000
1750
1500
1750
300
600
T
A
= +25
°
C
Min.
500
300
300
300
300
—
300
Typ.
—
—
—
—
—
1300
400
Max.
900
2000
1750
1500
1750
300
600
T
A
= +85
°
C
Min.
500
300
300
300
300
—
300
Typ.
—
—
—
—
—
1300
400
600
ps
Max.
900
2000
1750
1500
1750
ps
Unit
ps
Condition
t
PZH
t
PHZ
t
r
t
f
Notes:
1. Part-to-part skew is defined as Max. – Min. value at the given temperature.
2. R
L
= 50Ω
3. Figures 1 and 2
TTL AC ELECTRICAL CHARACTERISTICS
V
CC
= V
CCO
= 5V
±
5%; V
EE
= V
GT
= GND
T
A
= 0
°
C
Symbol
t
PLH
t
PHL
Parameter
Propagation Delay
(1)(2)
D to Q
TTL
SEL
0
to Q
TTL
SEL
1
to Q
TTL
SEL
2
to Q
TTL
EN to TTL Output
(2)
(Enable Time)
EN to TTL Output
(2)
(Disable Time)
Output Rise/Fall Time
(3)
0.8V to 2.4V
0.8Vto 2.0V
Min.
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0.3
Typ.
—
—
—
—
—
—
—
—
—
Max.
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
1.6
T
A
= +25
°
C
Min.
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0.3
Typ.
—
—
—
—
—
—
—
—
—
Max.
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
1.6
T
A
= +85
°
C
Min.
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0.3
Typ.
—
—
—
—
—
—
—
—
—
Max.
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
1.6
ns
ns
ns
Unit
ns
Condition
t
PZH
t
PZL
t
PHZ
t
PLZ
t
r
t
f
Notes:
1. Part-to-part skew is defined as Max. – Min. value at the given temperature.
2. Figures 3 and 4
3. C
L
= 25p
F
M9999-032406
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
SY100S863
PECL-TO-PECL TEST CIRCUITRY
V
CC
, V
CCT
& V
CCO
2V
–3V
PULSE
GENERATOR
0.1µ
0.1µ
V
EE
, V
GT
D
Q
50Ω
DUT Q
Q
TTL
EN
CH C
S
TTL
R
T
50Ω
450Ω
F
TTL
0V
-3V
USE OSCILLOSCOPE
INTERNAL 50Ω LOAD
FOR TERMINATION.
CH A
OSCILLOSCOPE
CH B
Figure 1. PECL-to-PECL AC Test Circuit
PECL-TO-PECL SWITCHING WAVEFORMS
PECL DATA
ENABLE
V
OH
= 4.1V
PECL OUTPUT
t
PD
V
OL
= 3.3V
t
PHZ
V
OZ
= 3V
t
PZH
Figure 2. PECL-to-PECL Transition — Propagation Delay and Transition Times
M9999-032406
hbwhelp@micrel.com or (408) 955-1690
5
模拟与混合信号
