MICREL SY10ELT23ZC

DUAL DIFFERENTIAL
PECL-to-TTL
TRANSLATOR
DESCRIPTION
FEATURES
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ClockWorks™
SY10ELT23
SY100ELT23
3.0ns typical propagation delay
<500ps typical output-to-output skew
Differential PECL inputs
24mA TTL outputs
Flow-through pinouts
Available in 8-pin SOIC package
The SY10/100ELT23 are dual differential PECL-to-TTL
translators. Because PECL (Positive ECL) levels are
used, only +5V and ground are required. The small outline
8-lead SOIC package and the low skew dual gate design
of the ELT23 makes it ideal for applications which require
the translation of a clock and a data signal.
The ELT23 is available in both ECL standards: the
10ELT is compatible with positive ECL 10H logic levels,
while the 100ELT is compatible with positive ECL 100K
logic levels.
PIN NAMES
PIN CONFIGURATION/BLOCK DIAGRAM
Pin
D0
1
8
VCC
D0
2
7
Q0
PECL
TTL
D1
3
6
Q1
D1
4
5
GND
Function
Qn
TTL Outputs
Dn
Differential PECL Inputs
VCC
+5.0V Supply
GND
Ground
SOIC
TOP VIEW
Rev.: G
1
Amendment: 0
Issue Date: December 1999
ClockWorks™
SY10ELT23
SY100ELT23
Micrel
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
TRUTH TABLE
Value
Unit
D
D
Q
–0.5 to +7.0
V
L
H
L
0V to VCC+0.5
V
H
L
H
Open
Open
L
Paramter
VCC
Power Supply Voltage
VI
PECL Input Voltage
VO
Voltage Applied to
Output at HIGH State
–0.5 to +5.5
V
IO
Current Applied to
Output at LOW State
Twice the
Rated IOL
mA
Tstore
Storage Temperature
–65 to +150
°C
TA
Operating Temperature
–40 to +85
°C
NOTE:
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS
are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections
of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions
for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS(1)
VCC = VCC (Min.) to VCC (Max.)
TA = -40°C
Symbol
ICC
Parameter
Power Supply Current
NOTE:
1. Parametric values specified at:
TA = +25°C
TA = +85°C
Min.
Max.
Min.
TA = 0°C
Max.
Min.
Max.
Min.
Max.
Unit
Condition
—
30
—
30
—
30
—
30
mA
—
5 volt Power Supply Range
100ELT23 Series:
10ELT23 Series
+4.5V to +5.5V.
+4.75V to +5.5V.
AC ELECTRICAL CHARACTERISTICS(1)
VCC = VCC (Min.) to VCC (Max.)
TA = -40°C
Symbol
Parameter
TA = 0°C
TA = +25°C
TA = +85°C
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
Condition
tPLH
tPHL
Propagation Delay
D to Output Q
2.5
3.5
2.5
3.5
2.5
3.5
2.5
3.5
ns
CL = 50pF
tskpp
Part-to-Part Skew(2,5)
—
0.5
—
0.5
—
0.5
—
0.5
ns
CL = 50pF
tskew++
Within-Device Skew(3,5)
—
0.3
—
0.3
—
0.3
—
0.3
ns
CL = 50pF
tskew– –
Within-Device Skew(4,5)
—
0.3
—
0.3
—
0.3
—
0.3
ns
CL = 50pF
tr
tf
Output Rise/Fall Time
1.0V to 2.0V
—
1.5
—
1.5
—
1.5
—
1.5
ns
CL = 50pF
fMAX
Maximum Input Frequency(5)
160
—
160
—
160
—
160
—
MHz
CL = 50pF
NOTES:
1. Parametric values specified at:
2.
3.
4.
5.
5 volt Power Supply Range
100ELT23 Series:
10ELT23 Series
Device-to-Device Skew considering HIGH-to-HIGH transitions at common VCC level.
Within-Device Skew considering HIGH-to-HIGH transitions at common VCC level.
Within-Device Skew considering LOW-to-LOW transitions at common VCC level.
These parameters are guaranteed but not tested.
2
+4.5V to +5.5V.
+4.75V to +5.5V.
ClockWorks™
SY10ELT23
SY100ELT23
Micrel
TTL DC ELECTRICAL CHARACTERISTICS(1)
VCC = VCC (Min.) to VCC (Max.)
TA = -40°C
Symbol
Parameter
TA = 0°C
TA = +25°C
TA = +85°C
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
Condition
VOH
Output HIGH Voltage
2.5
2.0
—
—
2.5
2.0
—
—
2.5
2.0
—
—
2.5
2.0
—
—
V
V
IOH = –3.0mA
IOH = –15mA
VOL
Output LOW Voltage
—
0.5
—
0.5
—
0.5
—
0.5
V
IOL = 24mA
IOS
Output Short Circuit Current
–80
–200
–80
–200
–80
–200
–80
–200
mA
VOUT = 0V
NOTE:
1. Parametric values specified at:
5 volt Power Supply Range
100ELT23 Series:
10ELT23 Series
+4.5V to +5.5V.
+4.75V to +5.5V.
PECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = VCC (Min.) to VCC (Max.)
TA = -40°C
Symbol
Parameter
TA = 0°C
Min.
Typ.
Max.
TA = +25°C
Min.
Typ.
Max.
TA = +85°C
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
IIH
Input HIGH Current
—
—
150
—
—
150
—
—
150
—
—
150
µA
IIL
Input HIGH Current
0.5
—
—
0.5
—
—
0.5
—
—
0.5
—
—
µA
VCMR
Common Mode Range
2.2
—
VCC
2.2
—
VCC
2.2
—
VCC
2.2
—
VCC
V
VPP
Minimum Peak-to-Peak
Input(2)
200
—
—
200
—
—
200
—
—
200
—
—
VIH
Input HIGH Voltage(3)
10ELT 3770
100ELT 3835
—
—
4110
4120
3830
3835
—
—
4160
4120
3870
3835
—
—
4190
4120
3940
3835
—
—
4280
4120
Input LOW Voltage(3)
10ELT 3050
100ELT 3190
—
—
3500
3525
3050
3190
—
—
3520
3525
3050
3190
—
—
3520
3525
3050
3190
—
—
3555
3525
VIL
NOTES:
1. Parametric values specified at:
mV
5 volt Power Supply Range
100ELT23 Series:
10ELT23 Series
2. 200mV input guarantees full logic at output.
3. These values are for VCC = 5.0V. Level Specifications will vary 1:1 VCC.
PRODUCT ORDERING CODE
Ordering
Code
mV
mV
Package
Type
Operating
Range
VCC Range
(V)
SY10ELT23ZC
Z8-1
Commercial
+4.75 to +5.5
SY10ELT23ZCTR
Z8-1
Commercial
+4.75 to +5.5
SY100ELT23ZC
Z8-1
Commercial
+4.5 to +5.5
SY100ELT23ZCTR
Z8-1
Commercial
+4.5 to +5.5
3
+4.5V to +5.5V.
+4.75V to +5.5V.
ClockWorks™
SY10ELT23
SY100ELT23
Micrel
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL-SYNERGY
TEL
3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA
+ 1 (408) 980-9191
FAX
+ 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
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