MICREL SY100EL92ZC

TRIPLE LVPECL-TO-PECL
OR PECL-TO-LVPECL
TRANSLATOR
FEATURES
DESCRIPTION
■ 5V and 3.3V power supplies required
The SY100EL92 is a triple LVPECL-to-PECL or PECLto-LVPECL translator. The device receives standard PECL
signals and translates them to differential LVPECL output
signals (or vice versa). SY100EL92 can also be used as a
differential line receiver for PECL-to-PECL or LVPECL-toLVPECL signals. However, please note that for the latter
we will need two different power supplies. Please refer to
Function Table for more details.
VBB outputs are provided for interfacing single ended
input signals. If a single ended input is to be used, the VBB
output should be connected to the D input and the active
signal will drive the D input. When used, the VBB should be
bypassed to VCC via a 0.01µF capacitor. The VBB is
designed to act as a switching reference for the SY100EL92
under single ended input conditions. As a result, the pin
can only source/sink 0.5mA of current.
To accomplish the PECL-to-LVPECL level translation,
the SY100EL92 requires three power rails. The VCC and
VCC_VBB supply is to be connected to the standard PECL
supply, the 3.3V supply is to be connected to the VCCO
supply, and GND is connected to the system ground plane.
Both the VCC and VCCO should be bypassed to ground with
a 0.01µF capacitor.
To accomplish the LVPECL-to-PECL level translation,
the SY100EL92 requires three power rails as well. The 5.0V
supply is connected to the VCC and VCCO pins, 3.3V supply
is connected to the VCC_VBB pin and GND is connected to
the system ground plane. VCC_VBB is used to provide a
proper VBB output level if a single ended input is used. For
differential LVPECL input VCC_VBB can be either 3.3V or
5V.
Under open input conditions, the D input will be biased
at a VCC/2 voltage level and the D input will be pulled to
GND. This condition will force the "Q" output low, ensuring
stability.
■ Also, supports LVPECL-to-PECL translation
■ 500ps propagation delays
■ Fully differential design
■ Differential line receiver capability
■ Application note
■ Available in 20-pin SOIC package
PIN CONFIGURATION/BLOCK DIAGRAM
20 VCC
VCC_VBB 1
D0 2
19
Q0
D0 3
18
Q0
4
17
VCCO
D1 5
16
Q1
D1 6
15
Q1
VBB 7
14
VCCO
D2 8
13
Q2
D2
12
Q2
11
VCC
VBB
SY100EL92
9
GND 10
SOIC
TOP VIEW
PIN NAMES
FUNCTION TABLE
Function
Vcc
Vcco
Vcc_VBB
PECL-to-LVPECL
5.0V
3.3V
5.0V
Dn
PECL / LVPECL Inputs
LVPECL-to-PECL
5.0V
5.0V
3.3V
Qn
PECL / LVPECL Outputs
PECL-to-PECL
5.0V
5.0V
5.0V
VBB
PECL / LVPECL Reference Voltage Output
LVPECL-to-LVPECL
5.0V
3.3V
3.3V
VCCO
VCC for Output
VCC_VBB
VCC for VBB Output
GND
Common Ground Rail
VCC
VCC for Internal Circuitry
Pin
Function
Rev.: D
1
Amendment: /0
Issue Date: January, 1999
SY100EL92
Micrel
PECL INPUT DC ELECTRICAL CHARACTERISTICS
VCC_VBB = VCC = +4.5V to +5.5V; VCCO = +3.0V to +3.8V
TA = –40°C
Symbol
VCC
TA = 0°C
TA = +25°C
TA = +85°C
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
Power Supply Voltage
4.5
—
5.5
4.5
—
5.5
4.5
—
5.5
4.5
—
5.5
V
Input HIGH
Voltage(1)
3.835
—
4.120
3.835
—
4.120
3.835
—
4.120
3.835
—
4.120
V
VIL
Input LOW
Voltage(1)
3.190
—
3.515
3.190
—
3.525
3.190
—
3.525
3.190
—
3.525
V
VPP
Minimum Peak-to-Peak
150
—
—
150
—
—
150
—
—
150
—
—
mV
—
—
150
—
—
150
—
—
150
—
—
150
µA
0.5
–600
—
—
—
—
0.5
–600
—
—
—
—
0.5
–600
—
—
—
—
0.5
–600
—
—
—
—
µA
3.620
—
3.740
3.620
—
3.740
3.620
—
3.740
3.620
—
3.740
V
—
—
12
—
—
12
—
8.0
12
—
—
12
mA
VIH
Input
IIH
Input HIGH Current
IIL
Input LOW Current
VBB
Output Reference(1)
ICC
Power Supply Current
Dn
Dn
NOTE:
1. These levels are for VCC_VBB = 5.0V. Level specifications will vary 1:1 with VCC_VBB.
LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS
VCC_VBB = VCC = +4.5V to +5.5V; VCCO = +3.0V to +3.8V
TA = –40°C
Symbol
VCCO
TA = 0°C
Parameter
Min.
Typ.
Max.
Power Supply Voltage
Min. Typ.
TA = +25°C
TA = +85°C
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
3.8
3.0
3.3
3.8
3.0
—
3.8
V
3.0
—
3.8
3.0
—
Output HIGH
Voltage(1)
2.215
—
2.420
2.275
—
2.420 2.275 2.350 2.420 2.275
—
2.420
V
VOL
Output LOW
Voltage(1)
1.470
—
1.745
1.490
—
1.680 1.490 1.600 1.680 1.490
—
1.680
V
ICCO
Power Supply Current
—
—
20
—
—
—
21
mA
VOH
20
—
15
20
—
NOTE:
1. These levels are for VCCO = 3.3V. Level specifications will vary 1:1 with VCCO.
LVPECL INPUT DC ELECTRICAL CHARACTERISTICS
VCC_VBB = +3.0V to +3.8V(1); VCC = VCCO = +4.5V to +5.5V
TA = –40°C
Symbol
VCC
TA = 0°C
TA = +25°C
TA = +85°C
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
Power Supply Voltage
4.5
—
5.5
4.5
—
5.5
4.5
—
5.5
4.5
—
5.5
V
Input HIGH
Voltage(2)
2.135
—
2.420
2.135
—
2.420
2.135
—
2.420
2.135
—
2.420
V
VIL
Input LOW
Voltage(2)
1.490
—
1.825
1.490
—
1.825
1.490
—
1.825
1.490
—
1.825
V
VPP
Minimum Peak-to-Peak
150
—
—
150
—
—
150
—
—
150
—
—
mV
—
—
150
—
—
150
—
—
150
—
—
150
µA
0.5
–600
—
—
—
—
0.5
–600
—
—
—
—
0.5
–600
—
—
—
—
0.5
–600
—
—
—
—
µA
1.92
—
2.04
1.92
—
2.04
1.92
—
2.04
1.92
—
2.04
V
—
—
12
—
—
12
—
8.0
12
—
—
12
mA
VIH
Input
IIH
Input HIGH Current
IIL
Input LOW Current
VBB
Output Reference(2)
ICC
Power Supply Current
Dn
Dn
NOTES:
1. VCC_VBB = 3.3V is only required for single-ended LVPECL input. For differential LVPECL input, VCC_VBB can be either 3.3V or 5V.
2. These levels are for VCC_VBB = 3.3V. Level specifications will vary 1:1 with VCC_VBB.
2
SY100EL92
Micrel
PECL OUTPUT DC ELECTRICAL CHARACTERISTICS
VCC_VBB = +3.0V to +3.8V; VCC = VCCO = +4.5V to +5.5V
TA = –40°C
Symbol
TA = 0°C
Parameter
Min.
Typ.
Max.
Min. Typ.
VCCO
Power Supply Voltage
4.5
—
5.5
4.5
VOH
Output HIGH Voltage(1)
3.915
—
4.120
VOL
Output LOW
Voltage(1)
3.170
—
ICCO
Power Supply Current
—
—
TA = +25°C
TA = +85°C
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
—
5.5
4.5
—
5.5
4.5
—
5.5
V
3.975
—
4.120
3.975
—
4.120
3.975
—
4.120
V
3.445
3.190
—
3.380
3.190
—
3.380
3.190
—
3.380
V
20
—
—
20
—
15
20
—
—
21
mA
NOTE:
1. These levels are for VCCO = 5.0V. Level specifications will vary 1:1 with VCCO.
AC ELECTRICAL CHARACTERISTICS(1)
TA = –40°C
Symbol
Parameter
tPLH
tPHL
Propagation Delay
D to Q
tskew
Within-Device Skew
Output-to-Output(2)
Part-to-Part (Diff.)(2)
Duty Cycle (Diff.)(3)
VPP
VCMR
tr
tf
Diff.
S.E.
Minimum Input Swing(4)
TA = 0°C
TA = +25°C
TA = +85°C
Min. Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max. Unit
430
410
520
540
630
710
430
410
520
540
630
710
430
410
520
540
630
710
430
410
520
540
630
710
ps
—
—
—
20
20
25
100
200
—
—
—
—
20
20
25
100
200
—
—
—
—
20
20
25
100
200
—
—
—
—
20
20
25
100
200
—
ps
150
—
—
150
—
—
150
—
—
150
—
—
mV
1.3
1.5
—
—
VCC–0.2
—
—
VCC–0.2
—
—
VCC–0.2
1.2
1.4
—
—
VCC–0.2
VCC–0.2
1.2
1.4
VCC–0.2
VCC–0.2
1.2
1.4
320
—
580
320
—
580
320
—
580
320
—
580
Range(5)
Common Mode
VPP < 500mV
VPP ≥ 500mV
Output Rise/Fall Times Q
(20% to 80%)
V
VCC–0.2
ps
NOTES:
1. Power supply requirements applies as indicated in the DC electrical characteristics tables.
2. Skew is measured between outputs under identical transitions.
3. Duty cycle skew is the difference between a TPLH and TPHL propagation delay through a device Common Mode Range.
4. Minimum input swing for which AC parameters are guaranteed. The device has a DC gain of ~40.
5. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified
range and the peak-to-peak voltage lies between VPP min. and 1V.
PRODUCT ORDERING CODE
Ordering
Code
Package
Type
Operating
Range
SY100EL92ZC
Z20-1
Commercial
SY100EL92ZCTR
Z20-1
Commercial
3
SY100EL92
Micrel
20 LEAD SOIC .300" WIDE (Z20-1)
Rev. 03
MICREL-SYNERGY
TEL
3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA
+ 1 (408) 980-9191
FAX
+ 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.
© 2000 Micrel Incorporated
4