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TTL-to-DIFFERENTIAL ECL TRANSLATOR
SY100ELT24
FEATURES
s s s s s 500ps typical propagation delay Differential ECL output PNP TTL input for minimal loading Flow-through pinouts Available in 8-pin SOIC package
DESCRIPTION
The SY100ELT24 is a TTL-to-differential ECL translator. Because ECL levels are used, a +5V, -5.2V (or -4.5V) and ground are required. The small outline 8lead SOIC package and the single gate of the ELT24 makes it ideal for those applications where performance, space and low power are at a premium.
PIN CONFIGURATION/BLOCK DIAGRAM
PIN NAMES
Pin Function Differential ECL Output TTL Input Positive Supply Negative Supply Ground
VEE D NC NC
1 2
TTL ECL
8 7 6 5
VCC Q Q GND
Q, Q D VCC VEE
3 4
GND
SOIC TOP VIEW
Rev.: A
Amendment: /0
1
Issue Date: November 1999
Micrel
SY100ELT24
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VCC VI II IOUT Paramter Power Supply Voltage TTL Input Voltage TTL Input Current ECL Output Current -- Continuous -- Surge Storage Temperature Operating Temperature Value -0.5 to +7.0 -0.5 to VCC -30 to +5.0 50 100 -65 to +150 -40 to +85 C C Unit V V mA mA
TRUTH TABLE
D H L Open Q H L H Q L H L
Tstore TA
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
VCC = 4.5V to 5.5V; VEE = -4.2V to -5.5V
TA = -40C Symbol ICC IEE Parameter Power Supply Current Power Supply Current -- -- 10 20 TA = 0C -- -- 10 20 TA = +25C TA = +85C Condition -- No output load -- -- 10 20 -- -- 10 20 mA mA Min. Max. Min. Max. Min. Max. Min. Max. Unit
AC ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 5.5V; VEE = -4.2V to -5.5V
TA = -40C Symbol tPLH tPHL tr tf fMAX Parameter Propagation Delay Output Rise/Fall Time 20% to 80% Maximum Input Frequency Min. 300 200 200 Max. 900 700 -- TA = 0C Min. 300 200 200 Max. 900 700 -- TA = +25C Min. 300 200 200 Typ. 500 300 -- Max. 900 700 -- TA = +85C Min. 300 200 200 Max. 900 700 -- Unit ps ps MHz Condition 50 to -2.0V 50 to -2.0V
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Micrel
SY100ELT24
TTL DC ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 5.5V; VEE = -4.2V to -5.5V
TA = -40C Symbol VIH VIL IIH IIL VIK Parameter Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current Input Clamp Voltage Min. 2.0 -- -- -- -- -- Max. -- 0.8 20 100 -0.6 -1.2 TA = 0C Min. 2.0 -- -- -- -- -- Max. -- 0.8 20 100 -0.6 -1.2 TA = +25C Min. 2.0 -- -- -- -- -- Max. -- 0.8 20 100 -0.6 -1.2 TA = +85C Min. 2.0 -- -- -- -- -- Max. -- 0.8 20 100 -0.6 -1.2 Unit V V A mA V Condition -- -- VIN = 2.7V VIN = VCC VIN = 0.5V IIN = -18mA
ECL DC ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 5.5V; VEE = -4.2V to -5.5V
TA = -40C Symbol VOH VOL Parameter Output HIGH Voltage Output LOW Voltage Min. -1085 -1830 Max. -880 -1555 TA = 0C Min. -1025 -1810 Max. -880 -1620 TA = +25C Min. -1025 -1810 Max. -880 -1620 TA = +85C Min. -1025 -1810 Max. -880 -1620 Unit mV mV Condition 50 to -2.0V 50 to -2.0V
PRODUCT ORDERING CODE
Ordering Code SY100ELT24ZC SY100ELT24ZCTR Package Type Z8-1 Z8-1 Operating Range Commercial Commercial
3
Micrel
SY100ELT24
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL-SYNERGY
TEL
3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA
FAX
+ 1 (408) 980-9191
+ 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. (c) 2000 Micrel Incorporated
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