DESCRIPTION
FEATURES
D FLIP-FLOP
WITH SET AND RESET
PIN NAMES
Pin
Function
D
Data Inputs
Q
Data Outputs
S
Set
R
Reset
CLK
Clock Input
PIN CONFIGURATION/BLOCK DIAGRAM
SY10EL31
SY100EL31
FINAL
s
475ps propagation delay
s
2.8GHz toggle frequency
s
Internal 75K
input pull-down resistors
s
Available in 8-pin SOIC package
The SY10/100EL31 are D flip-flops with set and reset.
The devices are functionally equivalent to the E131
devices, with higher performance capabilities. With
propagation delays and output transition times
significantly faster than the E131, the EL31 is ideally
suited for those applications which require the ultimate
in AC performance.
Both the set and reset inputs are asynchronous, level
triggered signals. Data enters the master portion of the
flip-flop when the clock is LOW and is transferred to the
slave, and thus the outputs, upon a positive transition of
the clock.
TRUTH TABLE
(1)
D
S
R
CLK
Q
L
L
L
Z
L
H
L
L
Z
H
X
H
L
X
H
X
L
H
X
L
X
H
H
X
Undef
NOTE:
1. Z = LOW-to-HIGH transition.
SOIC
TOP VIEW
1
2
3
4
5
6
7
8
S
V
CC
Q
V
EE
D
R
CLK
Q
S
D
R
Flip-Flop
1
Rev.: F
Amendment: /0
Issue Date:
February 2003
2
SY10EL31
SY100EL31
Micrel
T
A =
40
C
T
A =
0
C
T
A =
+25
C
T
A =
+85
C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
f
MAX
Maximum Toggle
20
2.5
--
2.2
2.8
--
2.2
2.8
--
2.2
2.8
--
GHz
Frequency
t
PLH
Propagation Delay to
ps
t
PHL
Output
CLK
315
465
630
365
465
580
375
475
590
430
530
645
S, R
295
455
630
345
455
580
355
465
590
400
510
645
t
S
Set-up Time
150
0
--
150
0
--
150
0
--
150
0
--
ps
t
H
Hold Time
250
100
--
250
100
--
250
100
--
250
100
--
ps
t
RR
Set/Reset Recovery
400
200
--
400
200
--
400
200
--
400
200
--
ps
t
PW
Minimum Pulse Width
400
--
--
400
--
--
400
--
--
400
--
--
ps
CLK, Set, Reset
t
r
Output Rise/Fall Times Q
100
225
350
100
225
350
100
225
350
100
225
350
ps
t
f
(20% to 80%)
AC ELECTRICAL CHARACTERISTICS
V
EE
= V
EE
(Min.) to V
EE
(Max.); V
CC
= GND
DC ELECTRICAL CHARACTERISTICS
T
A =
40
C
T
A =
0
C
T
A =
+25
C
T
A =
+85
C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
I
EE
Power Supply Current
mA
10EL
--
27
32
18
27
32
18
27
32
18
27
32
100EL
--
27
32
18
27
32
18
27
32
21
31
37
V
EE
Power Supply Voltage
V
10EL
4.75
5.2
5.5
4.75
5.2
5.5
4.75
5.2
5.5
4.75
5.2
5.5
100EL
4.20
4.5
5.5
4.20
4.5
5.5
4.20
4.5
5.5
4.20
4.5
5.5
I
IH
Input HIGH Current
--
--
150
--
--
150
--
--
150
--
--
150
A
V
EE
= V
EE
(Min.) to V
EE
(Max.); V
CC
= GND
PRODUCT ORDERING CODE
Ordering
Package
Operating
Marking
Code
Type
Range
Code
SY10EL31ZC
Z8-1
Commercial
HEL31
SY10EL31ZCTR*
Z8-1
Commercial
HEL31
SY100EL31ZC
Z8-1
Commercial
XEL31
SY100EL31ZCTR*
Z8-1
Commercial
XEL31
*Tape and Reel
Note 1.
Recommended for new designs.
Ordering
Package
Operating
Marking
Code
Type
Range
Code
SY10EL31ZI
(1)
Z8-1
Industrial
HEL31
SY10EL31ZITR*
(1)
Z8-1
Industrial
HEL31
SY100EL31ZI
(1)
Z8-1
Industrial
XEL31
SY100EL31ZITR*
(1)
Z8-1
Industrial
XEL31
*Tape and Reel
4
SY10EL31
SY100EL31
Micrel
MICREL, INC.
1849 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
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.
2003 Micrel, Incorporated.
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