Motorola MC100LVEL90DW, MC100LVEL90DWR2, MC100EL90DW, MC100LVEL90 Datasheet
SEMICONDUCTOR TECHNICAL DATA
4–1
REV 1
Motorola, Inc. 1996
7/95
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 L VEL 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.
D2D1
Logic Diagram and Pinout: 20-Lead SOIC (Top View)
D1
1718 16 15 14 13 12
43
5 6 7 8 9
Q0
11
10
Q1 Q1 Q2 Q2 V
CC
D0
1920
21
VCCQ0
D0 D2V
CC
V
EE
GND
V
BB
GND
V
BB
ECL
PECL
ECL
PECL
ECL
PECL
DW SUFFIX
PLASTIC SOIC PACKAGE
CASE 751D-04
1
20
PIN NAMES
Function
ECL Inputs
PECL Outputs
ECL Reference Voltage Output
Pins
Dn
Qn
V
BB
MC100LVEL90 MC100EL90
MOTOROLA ECLinPS and ECLinPS Lite
DL140 — Rev 3
4–2
ECL INPUT DC CHARACTERISTICS
–40°C 0°C 25°C 85°C
Symbol Characteristic Min Max Min Max Min Typ Max Min Max Unit Condition
V
EE
Power Supply EL90
Voltage LVEL90
–4.2
–3.0
–5.5
–3.8
–4.2
–3.0
–5.5
–3.8
–4.2
–3.0
–5.5
–3.8
–4.2
–3.0
–5.5
–3.8
V
I
IH
Input HIGH Current 150 150 150 150 µA
I
IL
Input LOW Current 0.5 0.5 0.5 0.5 µA
V
PP
Minimum Peak-to-Peak
Input
1
150 150 150 150 mV
V
IH
Input HIGH Voltage –1165 –880 –1165 –880 –1165 –880 –1165 –880 V
V
IL
Input LOW Voltage –1810 –1475 –1810 –1475 –1810 –1475 –1810 –1475 V
V
BB
Reference Output –1.38 –1.26 –1.38 –1.26 –1.38 –1.26 –1.38 –1.26 V
I
EE
Power Supply Current 8.0 8.0 6.0 8.0 8.0 mA
1. 150mV input guarantees full logic swing at the output.
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
V
CC
Power Supply Voltage 3.0 3.8 3.0 3.8 3.0 3.3 3.8 3.0 3.8 V
V
OH
Output HIGH Voltage12.215 2.42 2.275 2.42 2.275 2.35 2.42 2.275 2.42 V VCC = 3.3V
V
OL
Output LOW Voltage
1
1.47 1.745 1.49 1.68 1.49 1.60 1.68 1.49 1.68 V VCC = 3.3V
I
GND
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
V
CC
Power Supply Voltage 4.75 5.25 4.75 5.25 4.75 5.25 4.75 5.25 V
V
OH
Output HIGH Voltage13.915 4.12 3.975 4.12 3.975 4.05 4.12 3.975 4.12 V VCC = 5.0V
V
OL
Output LOW Voltage
1
3.17 3.445 3.19 3.38 3.19 3.30 3.38 3.19 3.38 V VCC = 5.0V
I
GND
Power Supply Current 24 24 20 24 26 mA
1. Levels will vary 1:1 with VCC.
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