Function and pinout compatible with Fairchild F100K
s
Available in 28-pin PLCC packages
The SY100S370 is a universal demultiplexer/decoder
that can be used as either a dual 1-of-4 decoder or as a
single 1-of-8 decoder and is designed for use in high-
performance ECL systems. The Mode control (M) input
determines the function. In the dual 1-of-4 mode, each 4-
input group has a pair of active-LOW Enable (E) inputs.
The Enable pins are assigned such that in the single 1-of-
8 mode they can be tied together in pairs to result in two
active-LOW Enable inputs. E
1a
will be tied to E
1b
and E
2a
to E
2b
.
The auxiliary inputs (H
n
) are used to determine whether
the outputs are active-HIGH or active-LOW. The address
inputs for the dual 1-of-4 mode are A
0a
, A
1a
, A
0b
. A
2a
is
unused. In the 1-of-8 mode, the address inputs are A
0a
,
A
1a
, A
2a
. The inputs on the device have 75kΩ pull-down
resistors.
PIN NAMES
Pin
A
na
, A
nb
E
na
, E
nb
M
H
a
H
b
H
c
Z
0
– Z
7
Z
na
, Z
nb
V
EES
V
CCA
Function
Address Inputs (n = 0,1,2)
Enable Inputs (n = 1,2)
Mode Control Input
Z
0
– Z
3
(Z
0a
– Z
3a
) Polarity Select Input
Z
4
– Z
7
(Z
0b
– Z
3b
) Polarity Select Input
Common Polarity Select Input
Single 1-of-8 Data Outputs
Dual 1-of-4 Data Outputs (n = 1...4)
V
EE
Substrate
V
CCO
for ECL Outputs
M9999-042307
hbwhelp@micrel.com or (408) 955-1690
1
Rev.: I
Amendment: /0
Issue Date: April 2007
Micrel, Inc.
SY100S370
PACKAGE/ORDERING INFORMATION
Z
1a
(Z
1
)
Z
2a
(Z
2
)
M
A
1a
V
EES
Ordering Information
Part Number
4
3
2
1
28
27
26
Z
0a
(Z
0
)
Z
3a
(Z
3
)
V
CCA
V
CC
V
CC
Z
1b
(Z
5
)
Z
2b
(Z
6
)
A
2a
A
0a
11 10 9 8 7 6 5
E
1a
E
1b
V
EE
V
EES
E
2b
E
2a
H
a
12
13
14
15
16
17
18
Package
Type
J28-1
J28-1
J28-1
J28-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Package
Marking
SY100S370JC
SY100S370JC
SY100S370JZ with
Pb-Free bar-line indicator
SY100S370JZ with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Matte-Sn
Matte-Sn
SY100S370JC
SY100S370JCTR
(1)
SY100S370JZ
(2)
SY100S370JZTR
(1, 2)
Notes:
Top View
PLCC
J28-1
19 20 21 22 23 24 25
H
b
A
0b
A
1b
Z
3b
(Z
7
)
Z
0b
(Z
4
)
V
EES
H
c
1. Tape and Reel.
2. Pb-Free package is recommended for new designs.
28-Pin PLCC (J28-1)
TRUTH TABLES
(1)
Dual 1-of-4 Mode (M = A
2a
= H
c
= LOW)
Inputs
E
1a
,E
1b
H
X
L
L
L
L
E
2a
,E
2b
X
H
L
L
L
L
A
1a
,A
1b
X
X
L
L
H
H
A
0a
,A
0b
X
X
L
H
L
H
Active HIGH Outputs
(H
a
and H
b
Inputs HIGH)
Z
0a
,Z
0b
L
L
H
L
L
L
Z
1a
,Z
1b
L
L
L
H
L
L
Z
2a
,Z
2b
L
L
L
L
H
L
Z
3a
,Z
3b
L
L
L
L
L
H
Active LOW Outputs
(H
a
and H
b
Inputs LOW)
Z
0a
,Z
0b
H
H
L
H
H
H
Z
1a
,Z
1b
H
H
H
L
H
H
Z
2a
,Z
2b
H
H
H
H
L
H
Z
3a
,Z
3b
H
H
H
H
H
L
Single 1-of-8 Mode (M = HIGH; A
0b
= A
1b
= H
a
= H
b
= LOW)
Inputs
E
1
H
X
L
L
L
L
L
L
L
L
E
2
X
H
L
L
L
L
L
L
L
L
A
2a
X
X
L
L
L
L
H
H
H
H
A
1a
X
X
L
L
H
H
L
L
H
H
A
0a
X
X
L
H
L
H
L
H
L
H
Z
0
L
L
H
L
L
L
L
L
L
L
Z
1
L
L
L
H
L
L
L
L
L
L
Active HIGH Outputs* (H
c
Input HIGH)
Z
2
L
L
L
L
H
L
L
L
L
L
Z
3
L
L
L
L
L
H
L
L
L
L
Z
4
L
L
L
L
L
L
H
L
L
L
Z
5
L
L
L
L
L
L
L
H
L
L
Z
6
L
L
L
L
L
L
L
L
H
L
Z
7
L
L
L
L
L
L
L
L
L
H
Note:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
* for H
c
= LOW, output states are complemented
E
1
= E
1a
and E
1b
wired; E
2
= E
2a
and E
2b
wired
M9999-042307
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY100S370
BLOCK DIAGRAM
A
0a
A
1a
E
1a
E
2a
A
2a
M
Z
2a
(Z
2
)
Z
0a
(Z
0
)
Z
1a
(Z
1
)
Z
3a
(Z
3
)
Z
2b
(Z
6
)
A
0b
Z
0b
(Z
4
)
Z
1b
(Z
5
)
A
1b
E
1b
E
2b
H
a
H
c
H
b
Z
3b
(Z
7
)
M9999-042307
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
SY100S370
DC ELECTRICAL CHARACTERISTICS
V
EE
= –4.2V to –5.5V unless otherwise specified; V
CC
= V
CCA
= GND
Symbol
I
IH
Parameter
Input HIGH Current
Hc, A0a, A1a, A2a
All Others
Power Supply Current
Min.
—
—
–92
Typ.
—
—
–73
Max.
310
250
–46
mA
Inputs Open
Unit
µA
Condition
V
IN
= V
IH
(Max.)
I
EE
AC ELECTRICAL CHARACTERISTICS
V
EE
= –4.2V to –5.5V unless otherwise specified; V
CC
= V
CCA
= GND
T
A
= 0
°
C
Symbol
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
TLH
t
THL
Parameter
Propagation Delay
E
na
, E
nb
to Output
Propagation Delay
A
na
, A
nb
to Output
Propagation Delay
H
a
, H
b
, H
c
to Output
Propagation Delay
M to Output
Transition Time
20% to 80%, 80% to 20%
Min.
300
500
500
600
300
Max.
1200
1500
1500
2100
900
T
A
= +25
°
C
Min.
300
500
500
600
300
Max.
1200
1500
1500
2100
900
T
A
= +85
°
C
Min.
300
500
500
600
300
Max.
1200
1500
1500
2100
900
Unit
ps
ps
ps
ps
ps
Condition
TIMING DIAGRAM
0.7 ± 0.1 ns
INPUT
0.7 ± 0.1 ns
–0.95V
80%
50%
20%
–1.69V
t
PHL
t
PLH
80%
50%
20%
t
TLH
t
THL
OUTPUT
Propagation Delay and Transition Times
Note:
V
EE
= –4.2V to –5.5V unless otherwise specified; V
CC
= V
CCA
= GND
M9999-042307
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
SY100S370
28-PIN PLCC (J28-1)
Rev. 03
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
WEB
http://www.micrel.com
The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
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