3-BIT 4:1
MUX-LATCH
SY10E156
SY100E156
FINAL
FEATURES
s
s
s
s
s
s
900ps max. D to output
Extended 100E V
EE
range of –4.2V to –5.5V
800ps max. LEN to output
Differential outputs
Asynchronous Master Reset
Dual latch enables
DESCRIPTION
The SY10/100E156 offer three 4:1 multiplexers followed
by latches with differential outputs, designed for use in
new, high-performance ECL systems. The two external
latch enable signals (LEN
1
and LEN
2
) are gated through a
logical OR operation before use as control for the three
latches. When both LEN
1
and LEN
2
are at a logic LOW, the
latches are transparent, thus presenting the data from the
multiplexers at the output pins. If either LEN
1
or LEN
2
(or
both) are at a logic HIGH, the outputs are latched.
The multiplexer operation is controlled by the Select
(SEL
0
, SEL
1
) signals which select one of the four bits of
input data at each mux to be passed through.
The MR (Master Reset) signal operates asynchronously
to take all outputs to a logic LOW.
s
Fully compatible with industry standard 10KH,
100K ECL levels
s
Internal 75K
Ω
input pulldown resistors
s
Fully compatible with Motorola MC10E/100E156
s
Available in 28-pin PLCC package
BLOCK DIAGRAM
PIN CONFIGURATION
D
2a
V
CCO
D
1b
D
1a
D
2d
D
2c
D
0a
D
0b
D
0c
D
0d
4:1
MUX
D
E
N R
Q
0
Q
0
SEL
0
SEL
1
MR
26
27
28
1
2
3
4
25 24 23 22 21 20 19
18
17
D
2b
Q
2
Q
2
V
CC
Q
1
Q
1
V
CCO
Q
0
D
1a
D
1b
D
1c
D
1d
D
4:1
MUX
E
N R
Q
1
Q
1
V
EE
LEN
1
LEN
2
D
1c
PLCC
TOP VIEW
J28-1
16
15
14
13
12
5
6
7
8
9
10 11
D
2a
D
2b
D
2c
D
2d
SEL
0
SEL
1
LEN
1
LEN
2
MR
D
4:1
MUX
E
N R
Q
2
Q
2
PIN NAMES
Pin
D
0x
–D
2x
SEL
0
, SEL
1
LEN
1
, LEN
2
MR
Q
0
–Q
2
Q
0
–Q
2
V
CCO
Function
Input Data
Select Inputs
Latch Enables
Master Reset
True Outputs
Inverted Outputs
V
CC
to Output
Rev.: C
Amendment: /1
1
V
CCO
Q
0
Issue Date: February, 1998
D
1d
D
0a
D
0b
D
0c
D
0d
Micrel
SY10E156
SY100E156
TRUTH TABLES
LEN
1
L
H
X
LEN
2
L
X
H
Latch
Transparent
Latched
Latched
SEL
0
L
H
L
H
SEL
1
L
L
H
H
Data
a
b
c
d
DC ELECTRICAL CHARACTERISTICS
V
EE
= V
EE
(Min.) to V
EE
(Max.); V
CC
= V
CCO
= GND
T
A
= 0
°
C
Symbol
I
IH
I
EE
Parameter
Input HIGH Current
Power Supply Current
10E
100E
—
—
75
75
90
90
—
—
75
75
90
90
—
—
75
86
90
103
—
—
150
T
A
= +25
°
C
—
—
150
T
A
= +85
°
C
Max.
150
Unit
µA
mA
Condition
—
—
—
—
Min. Typ. Max. Min. Typ.
Max. Min. Typ.
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
SEL
0
SEL
1
LEN
MR
Set-up Time
D
SEL
0
SEL
1
Hold Time
D
SEL
0
SEL
1
Reset Recovery Time
Minimum Pulse Width, MR
Within-Device Skew
Rise/Fall Time
20% to 80%
T
A
= +25
°
C
T
A
= +85
°
C
Max.
900
1050
900
800
825
ps
400
700
600
300
100
200
800
400
—
275
275
300
400
–275
–300
–400
600
—
50
475
—
—
—
—
—
—
—
—
—
700
400
700
600
300
100
200
800
400
—
275
275
300
400
–275
–300
–400
600
—
50
475
—
—
—
—
—
—
—
—
—
700
400
700
600
300
100
200
800
400
—
275
275
300
400
–275
–300
–400
600
—
50
475
—
—
—
ps
—
—
—
—
—
—
700
ps
ps
ps
ps
—
—
1
—
—
—
Unit
ps
400
550
450
350
350
600
775
650
500
600
900
1050
900
800
825
400
550
450
350
350
600
775
650
500
600
900
1050
900
800
825
400
550
450
350
350
600
775
650
500
600
Condition
—
Min. Typ. Max. Min. Typ.
Max. Min. Typ.
t
S
t
H
t
RR
t
PW
t
skew
t
r
t
f
NOTE:
1. Within-device skew is defined as identical transitions on similar paths
through a device.
PRODUCT ORDERING CODE
Ordering
Code
SY10E156JC
SY10E156JCTR
SY100E156JC
SY100E156JCTR
2
Package
Type
J28-1
J28-1
J28-1
J28-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Micrel
SY10E156
SY100E156
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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