1
Precision Edge®
SY10ELT23
SY100ELT23
Micrel
DESCRIPTION
■3.0ns typical propagation delay
■<500ps typical output-to-output skew
■Differential PECL inputs
■24mA TTL outputs
■Flow-through pinouts
■Internal input 50kΩ pulldown resistors
■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.
FEATURES
DUAL DIFFERENTIAL
PECL-to-TTL
TRANSLATOR
PIN NAMES
PIN CONFIGURATION/BLOCK DIAGRAM
Pin Function
QnTTL Outputs
DnDifferential PECL Inputs
VCC +5.0V Supply
GND Ground
SOIC
TOP VIEW
Precision Edge®
SY10ELT23
SY100ELT23
1
2
3
45
6
7
8
D0VCC
Q0
GND
Q1
D0PECL TTL
D1
D1
Rev.: J Amendment: 0
Issue Date:
February 2008
Precision Edge is a registered trademark of Micrel, Inc.
Precision Edge®
2
Precision Edge®
SY10ELT23
SY100ELT23
Micrel
TA = -40°CTA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit Condition
tPLH Propagation Delay 2.5 3.5 2.5 3.5 2.5 3.5 2.5 3.5 ns CL = 50pF
tPHL D to Output Q
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
trOutput Rise/Fall Time — 1.5 — 1.5 — 1.5 — 1.5 ns CL = 50pF
tf1.0V to 2.0V
fMAX Maximum Input Frequency(5) 160 — 160 — 160 — 160 — MHz CL = 50pF
Symbol Paramter Value Unit
VCC Power Supply Voltage –0.5 to +7.0 V
VIPECL Input Voltage 0V to VCC+0.5 V
VOVoltage Applied to –0.5 to +5.5 V
Output at HIGH State
IOCurrent Applied to Twice the mA
Output at LOW State Rated IOL
Tstore Storage Temperature –65 to +150 °C
TAOperating 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.
TA = -40°CTA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit Condition
ICC Power Supply Current — 30 — 30 — 30 — 30 mA —
ABSOLUTE MAXIMUM RATINGS(1) TRUTH TABLE
DD Q
LH L
HL H
Open Open L
DC ELECTRICAL CHARACTERISTICS(1)
VCC = VCC (Min.) to VCC (Max.)
AC ELECTRICAL CHARACTERISTICS(1)
VCC = VCC (Min.) to VCC (Max.)
Note:
1. Parametric values specified at: 5 volt Power Supply Range 100ELT23 Series: +4.5V to +5.5V.
10ELT23 Series +4.75V to +5.5V.
Notes:
1. Parametric values specified at: 5 volt Power Supply Range 100ELT23 Series: +4.5V to +5.5V.
10ELT23 Series +4.75V to +5.5V.
2. Device-to-Device Skew considering HIGH-to-HIGH transitions at common VCC level.
3. Within-Device Skew considering HIGH-to-HIGH transitions at common VCC level.
4. Within-Device Skew considering LOW-to-LOW transitions at common VCC level.
5. These parameters are guaranteed but not tested.
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Precision Edge®
SY10ELT23
SY100ELT23
Micrel
TTL DC ELECTRICAL CHARACTERISTICS(1)
VCC = VCC (Min.) to VCC (Max.)
Note:
1. Parametric values specified at: 5 volt Power Supply Range 100ELT23 Series: +4.5V to +5.5V.
10ELT23 Series +4.75V to +5.5V.
VCC = VCC (Min.) to VCC (Max.)
Notes:
1. Parametric values specified at: 5 volt Power Supply Range 100ELT23 Series: +4.5V to +5.5V.
10ELT23 Series +4.75V to +5.5V.
2. 200mV input guarantees full logic at output.
3. These values are for VCC = 5.0V. Level Specifications will vary 1:1 VCC.
PECL DC ELECTRICAL CHARACTERISTICS(1)
TA = -40°CTA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit Condition
VOH Output HIGH Voltage 2.5 — 2.5 — 2.5 — 2.5 — V IOH = –3.0mA
2.0 — 2.0 — 2.0 — 2.0 — V 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
TA = -40°CTA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. 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 — — mV
VIH Input HIGH Voltage(3) mV
10ELT 3770 — 4110 3830 — 4160 3870 — 4190 3940 — 4280
100ELT 3835 — 4120 3835 — 4120 3835 — 4120 3835 — 4120
VIL Input LOW Voltage(3) mV
10ELT 3050 — 3500 3050 — 3520 3050 — 3520 3050 — 3555
100ELT 3190 — 3525 3190 — 3525 3190 — 3525 3190 — 3525
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Precision Edge®
SY10ELT23
SY100ELT23
Micrel
PRODUCT ORDERING CODE
Package Operating Package Lead Finish
Part Number Type Range Marking
SY10ELT23ZC Z8-1 Commercial HEL23 Standard
SY10ELT23ZCTR(1) Z8-1 Commercial HEL23 Standard
SY100ELT23ZC Z8-1 Commercial XEL23 Standard
SY100ELT23ZCTR(1) Z8-1 Commercial XEL23 Standard
SY10ELT23ZI Z8-1 Industrial HEL23 Standard
SY10ELT23ZITR(1) Z8-1 Industrial HEL23 Standard
SY100ELT23ZI Z8-1 Industrial XEL23 Standard
SY100ELT23ZITR(1) Z8-1 Industrial XEL23 Standard
SY10ELT23ZG(2,3) Z8-1 Industrial HEL23 Pb-Free NiPdAu
SY10ELT23ZGTR(1,2,3) Z8-1 Industrial HEL23 Pb-Free NiPdAu
SY100ELT23ZG(2,3) Z8-1 Industrial XEL23 Pb-Free NiPdAu
SY100ELT23ZGTR(1,2,3) Z8-1 Industrial XEL23 Pb-Free NiPdAu
Notes:
1. Tape and Reel.
2. Recommended for new designs.
3. Pb-Free version.
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Precision Edge®
SY10ELT23
SY100ELT23
Micrel
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
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.
