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MC100LVEL90 Datasheet

Triple ECL to PECL Translator

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Triple ECL to PECL Translator
The MC100LVEL/EL90 is a triple ECL to PECL translator. The device
receives either standard or low voltage differential ECL signals and
translates them to either standard or low voltage differential PECL output
signals. The LVEL device can handle the low voltage signals while the EL
device is designed for the standard signals. It is possible to have low
voltage signals on one side and standard signals on the other if the
LVEL90 is used.
500ps Propagation Delays
Fully Differential Design
Supports both Standard and Low Voltage Operation
20–Lead SOIC Packaging
A VBB output is provided for interfacing with single ended ECL signals
at the input. If a single ended input is to be used the VBB output should be
connected to the D input. The active signal would then drive the D input.
When used the VBB output should be bypassed to ground via a 0.01µF
capacitor. The VBB output is designed to act as the switching reference
for the EL90 under single ended input switching conditions, as a result
this pin can only source/sink up to 0.5mA of current.
To accomplish the level translation the EL/LVEL90 requires three
power rails. The VCC supply should be connected to the positive supply,
and the VEE pin should be connected to the negative power supply. The
GND pins as expected are connected to the system ground plain. Both
VEE and VCC should be bypassed to ground via 0.01µF capacitors.
Under open input conditions, the D input will be biased at VEE/2 and
the D input will be pulled to VEE. This condition will force the Q output to a
LOW, ensuring stability.
Logic Diagram and Pinout: 20-Lead SOIC (Top View)
VCC Q0
20 19
Q0 GND Q1
18 17 16
Q1 GND Q2
15 14 13
Q2 VCC
12 11
PECL
PECL
PECL
MC100LVEL90
MC100EL90
20
1
DW SUFFIX
PLASTIC SOIC PACKAGE
CASE 751D-04
PIN NAMES
Pins
Function
Dn
Qn
VBB
ECL Inputs
PECL Outputs
ECL Reference Voltage Output
ECL ECL ECL
12
VCC D0
345
D0 VBB D1
678
D1 VBB D2
9 10
D2 VEE
7/95
© Motorola, Inc. 1996
4–1
REV 1


Motorola Electronic Components Datasheet

MC100LVEL90 Datasheet

Triple ECL to PECL Translator

No Preview Available !

MC100LVEL90 MC100EL90
ECL INPUT DC CHARACTERISTICS
–40°C
0°C
Symbol
Characteristic
Min Max Min Max
VEE
Power Supply
Voltage
EL90 –4.2 –5.5 –4.2 –5.5
LVEL90 –3.0 –3.8 –3.0 –3.8
IIH
IIL
VPP
Input HIGH Current
Input LOW Current
Minimum Peak-to-Peak
Input1
150 150
0.5 0.5
150 150
VIH Input HIGH Voltage
–1165 –880 –1165
VIL Input LOW Voltage
–1810 –1475 –1810
VBB
Reference Output
–1.38 –1.26 –1.38
IEE Power Supply Current
8.0
1. 150mV input guarantees full logic swing at the output.
–880
–1475
–1.26
8.0
Min
–4.2
–3.0
0.5
150
–1165
–1810
–1.38
25°C
Typ
6.0
Max
–5.5
–3.8
150
85°C
Min Max
–4.2
–3.0
–5.5
–3.8
150
0.5
150
–880
–1475
–1.26
8.0
–1165
–1810
–1.38
–880
–1475
–1.26
8.0
Unit
V
µA
µA
mV
V
V
V
mA
Condition
LVPECL OUTPUT DC CHARACTERISTICS
–40°C
0°C
25°C
85°C
Symbol
Characteristic
Min Max Min Max Min Typ Max Min Max Unit Condition
VCC
VOH
VOL
Power Supply Voltage 3.0 3.8 3.0 3.8 3.0 3.3 3.8 3.0 3.8
V
Output HIGH Voltage1 2.215 2.42 2.275 2.42 2.275 2.35 2.42 2.275 2.42 V VCC = 3.3V
Output LOW Voltage1 1.47 1.745 1.49 1.68 1.49 1.60 1.68 1.49 1.68 V VCC = 3.3V
IGND
Power Supply Current
24
24
20 24
26 mA
1. Levels will vary 1:1 with VCC.
PECL OUTPUT DC CHARACTERISTICS
–40°C
0°C
25°C
85°C
Symbol
Characteristic
Min Max Min Max Min Typ Max Min Max Unit Condition
VCC
VOH
VOL
Power Supply Voltage 4.75 5.25 4.75 5.25 4.75
5.25 4.75 5.25 V
Output HIGH Voltage1 3.915 4.12 3.975 4.12 3.975 4.05 4.12 3.975 4.12 V VCC = 5.0V
Output LOW Voltage1 3.17 3.445 3.19 3.38 3.19 3.30 3.38 3.19 3.38 V VCC = 5.0V
IGND
Power Supply Current
24
24
20 24
26 mA
1. Levels will vary 1:1 with VCC.
MOTOROLA
4–2 ECLinPS and ECLinPS Lite
DL140 — Rev 3


Part Number MC100LVEL90
Description Triple ECL to PECL Translator
Maker Motorola
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