The SY10/100EL51 are differential clock D flip-flops
with reset. These devices are functionally similar to the
E151 devices, with higher performance capabilities. With
propagation delays and output transition times
significantly faster than the E151, the EL51 is ideally
suited for those applications which require the ultimate
in AC performance.
The reset input is an asynchronous, level triggered
signal. 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. The differential clock inputs of the EL51 allow the
device to be used as a negative edge triggered flip-flop.
The differential input employs clamp circuitry to
maintain stability under open input (pulled down to V
EE
)
conditions.
PIN NAMES
Pin
R
D
CLK
Q
Function
Reset Input
Data Input
Clock Input
Data Output
TRUTH TABLE
(1)
D
L
H
X
R
L
L
H
CLK
Z
Z
X
Q
L
H
L
NOTE:
1. Z = LOW-to-HIGH transition.
M9999-121205
hbwhelp@micrel.com or (408) 955-1690
Rev.: G
Amendment: /0
1
1
Issue Date: December 2005
Micrel, Inc.
SY10EL51
SY100EL51
PACKAGE/ORDERING INFORMATION
Ordering Information
(1)
Part Number
R
D
CLK
CLK
1
R
2
3
4
D
Flip-Flop
6
5
Q
V
EE
7
Q
8
V
CC
Package
Type
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Z8-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Package
Marking
HEL51
HEL51
XEL51
XEL51
HEL51
HEL51
XEL51
XEL51
HEL51 with
Pb-Free bar-line indicator
HEL51 with
Pb-Free bar-line indicator
XEL51 with
Pb-Free bar-line indicator
XEL51 with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
Pb-Free
NiPdAu
Pb-Free
NiPdAu
Pb-Free
NiPdAu
Pb-Free
NiPdAu
SY10EL51ZC
SY10EL51ZCTR
(2)
SY100EL51ZC
SY100EL51ZCTR
(2)
SY10EL51ZI
SY10EL51ZITR
(2)
8-Pin SOIC (Z8-1)
SY100EL51ZI
SY100EL51ZITR
(2)
SY10EL51ZG
(3)
SY10EL51ZGTR
(2, 3)
SY100EL51ZG
(3)
SY100EL51ZGTR
(2, 3)
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC Electricals only.
2. Tape and Reel.
3. Pb-Free package is recommended for new designs.
M9999-121205
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY10EL51
SY100EL51
DC ELECTRICAL CHARACTERISTICS
V
EE
= V
EE
(Min.) to V
EE
(Max.); V
CC
= GND
T
A =
–40
°
C
Symbol
I
EE
Parameter
Power Supply Current
10EL
100EL
Min.
—
—
Typ.
24
24
–5.2
–4.5
—
Max.
29
29
–5.5
–5.5
150
Min.
19
19
–4.75
–4.20
—
T
A =
0
°
C
Typ.
24
24
–5.2
–4.5
—
Max.
29
29
–5.5
–5.5
150
T
A =
+25
°
C
Min.
19
19
–4.75
–4.20
—
Typ.
24
24
–5.2
–4.5
—
Max.
29
29
–5.5
–5.5
150
Min.
19
24
–4.75
–4.20
—
T
A =
+85
°
C
Typ.
24
30
–5.2
–4.5
—
Max.
29
36
V
–5.5
–5.5
150
µA
Unit
mA
V
EE
Power Supply Voltage
10EL –4.75
100EL –4.20
Input HIGH Current
—
I
IH
AC ELECTRICAL CHARACTERISTICS
V
EE
= V
EE
(Min.) to V
EE
(Max.); V
CC
= GND
T
A =
–40
°
C
Symbol
f
MAX
t
PD
Parameter
Maximum Toggle
Frequency
Propagation Delay to
Output
CLK
R
Set-up Time
Hold Time
Reset Recovery
Minimum Pulse Width
CLK, Reset
Minimum Input
Swing
(1)
Common Mode
Range
(2)
Min. Typ.
1.8
2.8
Max.
—
Min.
2.2
T
A =
0
°
C
Typ.
2.8
Max.
—
Min.
2.2
T
A =
+25
°
C
Typ.
2.8
Max.
—
2.2
T
A =
+85
°
C
Min.
Typ.
2.8
Max.
—
Unit
GHz
ps
325
305
150
250
400
400
150
(2)
465
455
0
100
200
—
—
—
225
605
605
—
—
—
—
—
–0.4
350
375
355
150
250
400
400
150
(2)
100
465
455
0
100
200
—
—
—
225
555
555
—
—
—
—
—
–0.4
350
385
355
150
250
400
400
150
(2)
100
475
465
0
100
200
—
—
—
225
565
565
—
—
—
—
—
–0.4
350
440
410
150
250
400
400
150
(2)
100
530
510
0
100
200
—
—
—
225
620
620
—
—
—
—
—
–0.4
350
ps
ps
ps
ps
mV
V
ps
t
S
t
H
t
RR
t
PW
V
PP
V
CMR
t
r
t
f
Output Rise/Fall Times Q 100
(20% to 80%)
NOTES:
1. Minimum input swing for which AC parameters are guaranteed.
2. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified
range and the peak-to-peak voltage lies between V
PP
min. and 1V. The lower end of the CMR range is dependent on V
EE
and is equal to V
EE
+ 3.0V.
M9999-121205
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
SY10EL51
SY100EL51
8-PIN SOIC .150" WIDE (Z8-1)
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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