Micrel, Inc.
8-BIT SHIFT
REGISTER
DESCRIPTION
SY100S341
SY100S341
FEATURES
s
s
s
s
Max. shift frequency of 600MHz
Max. Clock to Q delay of 1200ps
I
EE
min. of –150mA
Industry standard 100K ECL levels
s
Extended supply voltage option:
V
EE
= –4.2V to –5.5V
s
Voltage and temperature compensation for improved
noise immunity
s
Internal 75k
Ω
input pull-down resistors
s
70% faster than Fairchild 300K at lower power
s
Function and pinout compatible with Fairchild F100K
s
Available in 28-pin PLCC package
The SY100S341 offer eight D-type, edge-triggered flip-
flops with both individual inputs for parallel operation as
well as serial inputs for bidirectional shifting, and are
designed for use in high-performance ECL systems. Data
is clocked into the flip-flops on the rising edge of the clock.
The mode of operation is selected by two Select inputs
(S
0
, S
1
) which determine if the device performs a shift, hold
or parallel entry function, as described in the Truth Table.
The inputs on these devices have 75kΩ pull-down resistors.
PIN NAMES
Label
CP
S
0
— S
1
D
0
— D
7
P
0
— P
7
Q
0
— Q
7
V
EES
V
CCA
Function
Clock Pulse Input
Select Inputs
Serial Inputs
Parallel Inputs
Data Outputs
V
EE
Substrate
V
CCO
for ECL Outputs
M9999-042307
hbwhelp@micrel.com or (408) 955-1690
Rev.: I
Amendment: /0
1
Issue Date: April 2007
Micrel, Inc.
SY100S341
PACKAGE/ORDERING INFORMATION
P
6
P
7
V
EES
Q
7
Q
6
D
7
P
5
Ordering Information
Part Number
4
3
2
1
28
27
26
Q
5
Q
4
V
CCA
V
CC
V
CC
Q
3
Q
2
11 10 9 8 7 6 5
P
4
CP
V
EE
V
EES
S
0
S
1
P
3
12
13
14
15
16
17
18
19 20 21 22 23 24 25
Top View
PLCC
J28-1
Package
Type
J28-1
J28-1
J28-1
J28-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Package
Marking
SY100S341JC
SY100S341JC
SY100S341JZ with
Pb-Free bar-line indicator
SY100S341JZ with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Matte-Sn
Matte-Sn
SY100S341JC
SY100S341JCTR
(1)
SY100S341JZ
(2)
SY100S341JZTR
(1, 2)
Notes:
V
EES
D
0
Q
0
Q
1
P
2
P
1
P
0
1. Tape and Reel.
2. Pb-Free package is recommended for new designs.
28-Pin PLCC (J28-1)
M9999-042307
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY100S341
TRUTH TABLE
Inputs
Function
Load Register
Shift Left
Shift Left
Shift Right
Shift Right
Hold
Hold
Hold
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
u = LOW-to-HIGH Transition
Outputs
S
0
L
H
H
L
L
H
X
X
CP
u
u
u
u
u
X
H
L
Q
7
P
7
Q
6
Q
6
L
H
Q
6
P
6
Q
5
Q
5
Q
7
Q
7
Q
5
P
5
Q
4
Q
4
Q
6
Q
6
Q
4
P
4
Q
3
Q
3
Q
5
Q
5
Q
3
P
3
Q
2
Q
2
Q
4
Q
4
Q
2
P
2
Q
1
Q
1
Q
3
Q
3
Q
1
P
1
Q
0
Q
0
Q
2
Q
2
Q
0
P
0
L
H
Q
1
Q
1
D
7
X
X
X
L
H
X
X
X
D
0
X
L
H
X
X
X
X
X
S
1
L
L
L
H
H
H
X
X
No Change
DC ELECTRICAL CHARACTERISTICS
V
EE
= –4.2V to –5.5V unless otherwise specified; V
CC
= V
CCA
= GND
Symbol
I
IH
I
EE
Parameter
Input HIGH Current, All Inputs
Power Supply Current
Min.
—
–150
Typ.
—
–102
Max.
200
–71
Unit
µA
mA
Condition
V
IN
= V
IH
(Max.)
Inputs Open
AC ELECTRICAL CHARACTERISTICS
V
EE
= –4.2V to –5.5V unless otherwise specified; V
CC
= V
CCA
= GND
T
A
= 0
°
C
Symbol
f
shift
t
PLH
t
PHL
t
TLH
t
THL
t
S
Parameter
Shift Frequency
Propagation Delay
CP to Output
Transition Time
20% to 80%, 80% to 20%
Set-up Time
D
n
, P
n
S
n
Hold Time
D
n
, P
n
S
n
Pulse Width HIGH, CP
Min.
600
450
300
Max.
—
1200
900
T
A
= +25
°
C
Min.
600
450
300
Max.
—
1200
900
T
A
= +85
°
C
Min.
600
450
300
Max.
—
1200
900
Unit
MHz
ps
ps
ps
300
600
300
0
—
—
—
—
—
600
300
600
300
0
—
—
—
—
—
600
300
600
300
0
—
—
—
ps
—
—
600
ps
Condition
t
H
t
pw
(H)
M9999-042307
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
SY100S341
TIMING DIAGRAMS
0.7 ± 0.1 ns
0.7 ± 0.1 ns
–0.95V
80%
50%
20%
–1.69V
1/fshift
tpw (H)
–0.95V
PARALLEL
–1.69V
t
PLH
t
PHL
CLOCK
OUTPUT
t
TLH
t
THL
Propagation Delay and Transition Times
–0.95V
P
n
, S
n
, D
n
50%
–1.69V
t
H
t
S
–0.95V
CLOCK
50%
–1.69V
Set-up and Hold Times
Notes:
1. V
EE
= –4.2V to –5.5V unless otherwise specified; V
CC
= V
CCA
= GND.
2. t
S
is the minimum time before the transition of the clock that information must be present at the data input.
3. t
H
is the minimum time after the transition of the clock that information must remain unchanged at the data input.
M9999-042307
hbwhelp@micrel.com or (408) 955-1690
5
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