MICREL SY100EL90V Datasheet
5V/3.3V TRIPLE ECL/L VECL-T O-
2
0
B
0
PECL/L VPECL TRANSLA TOR
SY100EL90V
FEATURES
■ 3.3V and 5V power supply options
■ 500ps propagation delay
■ Fully differential design
■ Supports both standard and low voltage operation
■ Available in 20-pin SOIC package
PIN CONFIGURATION/BLOCK DIAGRAM
PECL
PECL
19
18
17
16
20
V
CC
Q
0
Q
0
GND
Q
1
V
CC
1
2
D
3
D
V
B
4
5
D
1
ECL
ECL
DESCRIPTION
The SY100EL90V is a triple ECL/LVECL-to-PECL/
LVPECL translator. The device can translate over all
combinations of supply voltages: -5V ECL to 5V PECL,
-5V ECL to 3.3V LVPECL, -3.3V LVECL to 5V PECL or
-3.3V LVECL to 3.3V LVPECL.
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 via a
0.01µF capacitor. The VBB output is designed to act as
the switching reference for the EL90V 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 EL90V 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 plane.
Both VEE and VCC should be bypassed to ground via
0.01µF capacitors.
Under open input conditions, the D input will be biased
at VCC/2 and the D input will be pulled to VEE. This
condition will force the Q output to a LOW, ensuring
stability.
D
1
6
7
V
BB
8
D
D
2
9
V
EE
10 11
ECL
SOIC
TOP VIEW
PECL
15
14
13
12
Q
1
GND
Q
2
Q
2
V
CC
PIN NAMES
Pin Function
Dn ECL/LVECL Inputs
Qn PECL/LVPECL Outputs
BB ECL/LVECL Reference Voltage Output
V
FUNCTION TABLE
Function VCC GND VEE
–5V ECL to 5V PECL 5V 0V –5V
–5V ECL to 3.3V LVPECL 3.3V 0V –5V
–3.3V LVECL to 5V PECL 5V 0V –3.3V
–3.3V LVECL to 3.3V LVPECL 3.3V 0V –3.3V
Rev.: F Amendment: /1
1
Isse Date: October, 1998
Micrel
SY100EL90V
ECL/LVECL INPUT DC ELECTRICAL CHARACTERISTICS
ECL: VEE = –4.2V to –5.5V; LVECL: VEE = –3.0V to –3.8V
TA = –40°C TA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit
VIH Input HIGH Voltage –1165 — –880 –1165 — –880 –1165 — –880 –1165 — –880 mV
VIL Input LOW Voltage –1810 — –1475 –1810 — –1475 –1810 — –1475 –1810 — –1475 mV
IEE Power Supply Current — — 8 — — 8 — — 8 — — 8 mA
IIH Input HIGH Current — — 150 — — 150 — — 150 — — 150 µA
IL Input LOW Current Dn 0.5 — — 0.5 — — 0.5 — — 0.5 — — µA
I
Dn –600 — — –600 — — –600 — — –600 — —
VBB Output Reference –1.38 — –1.26 –1.38 — –1.26 –1.38 — –1.26 –1.38 — –1.26 V
V
PP Minimum Peak-to-Peak 150 — — 150 — — 150 — — 150 — — mV
Input
LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS
V
CC = +3.0V to +3.8V
TA = –40°CTA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit
VOH Output HIGH Voltage
VOL Output LOW Voltage
CC Power Supply Current — — 24 — — 24 — 20 24 — — 26 mA
I
NOTE:
1. These levels are for VCC = 3.3V. Level specifications will vary 1:1 with VCC.
(1)
2.215 — 2.420 2.275 — 2.420 2.275 2.350 2.420 2.275 — 2.420 V
(1)
1.470 — 1.745 1.490 — 1.680 1.490 1.600 1.680 1.490 — 1.680 V
PECL OUTPUT DC ELECTRICAL CHARACTERISTICS
VCC = +4.2V to +5.5V
TA = –40°CTA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit
VOH Output HIGH Voltage
VOL Output LOW Voltage
CC Power Supply Current — — 24 — — 24 — 20 24 — — 26 mA
I
NOTE:
1. These values are for VCC = 5V. Level specifications will vary 1:1 with VCC.
(1)
3.915 — 4.120 3.975 — 4.120 3.975 4.050 4.120 3.975 — 4.120 V
(1)
3.170 — 3.445 3.190 — 3.380 3.190 3.300 3.380 3.190 — 3.380 V
2
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