MICREL SY100E417JCTR

QUINT LVPECL-TO-PECL
OR PECL-TO-LVPECL
TRANSLATOR
DESCRIPTION
FEATURES
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SY100E417
3.3V and 5V power supplies required
Also, supports LVPECL-to-PECL translation
500ps propagation delays
Fully differential design
Differential line receiver capability
Available in 28-pin PLCC package
The SY100E417 is a quint LVPECL-to-PECL translator.
It can also be used as a quint PECL-to-LVPECL translator.
The device receives standard PECL signals and translates
them to differential LVPECL output signals (or vice versa).
The SY100E417 can also be used as a differential line
receiver for PECL-to-PECL or LVPECL-to-LVPECL signals.
However, please note that for the latter we will need two
different power supplies. Please refer to Function Table for
more details.
A VBB output is provided for interfacing single ended
input signals. If a single ended input is to be used, the VBB
output should be connected to the Dn input and the active
signal will drive the Dn 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 SY100E417
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 SY100E417 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 SY100E417 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.
VCC_VBB = 3.3V is only required for single-ended LVPECL
input. For differential LVPECL input, VCC_VBB can be either
3.3V or 5.0V.
Under open input conditions, the Dn input will be biased
at a VCC/2 voltage level and the Dn input will be pulled to
GND. This condition will force the "Qn" output low, ensuring
stability.
BLOCK DIAGRAM
D0
D0
Q0
Q0
D1
D1
Q1
Q1
D2
D2
Q2
Q2
D3
D3
Q3
Q3
D4
D4
Q4
Q4
VBB
FUNCTION TABLE
Function
Vcc
Vcco
Vcc_VBB
PECL-to-LVPECL
5.0V
3.3V
5.0V
LVPECL-to-PECL
5.0V
5.0V
3.3V
PECL-to-PECL
5.0V
5.0V
5.0V
LVPECL-to-LVPECL
5.0V
3.3V
3.3V
Rev.: B
1
Amendment: /1
Issue Date: March, 1999
SY100E417
Micrel
PIN NAMES
Pin
Q4
Q4
VCCO
D4
D4
VCC_VBB
D3
PIN CONFIGURATION
25 24 23 22 21 20 19
D3
D2
D2
26
18
27
17
28
16
GND
VBB
D0
D0
1
TOP VIEW
PLCC
J28-1
2
Q3
Q3
VCC
Q2
Q2
VCCO
Q1
15
14
3
13
VCCO
Q0
8
9
10 11
VCCO
Q1
7
Q0
6
D1
12
5
D1
4
Function
Dn
PECL / LVPECL Inputs
Qn
PECL / LVPECL Outputs
VBB
Reference Voltage Output
VCCO
VCC for Outputs
VCC_VBB
VCC for VBB Output
GND
Common Ground Rail
VCC
VCC for Internal Circuitry
PECL INPUT DC ELECTRICAL CHARACTERISTICS
VCC_VBB = VCC = +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(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
—
—
20
—
—
20
—
14
20
—
—
20
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.
2
SY100E417
Micrel
LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS
VCC = +4.5V to +5.5V; VCCO = +3.0V to 3.8V
TA = –40°C
Symbol
TA = 0°C
Parameter
Min.
Typ.
Max.
Min. Typ.
VCCO
Power Supply Voltage
3.0
—
3.8
3.0
—
VOH
Output HIGH Voltage(1)
2.215
—
2.420
2.275
—
VOL
Output LOW
Voltage(1)
1.470
—
1.745
1.490
—
ICCO
Power Supply Current
—
—
35
—
—
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
2.420 2.275 2.350 2.420 2.275
—
2.420
V
1.680 1.490 1.600 1.680 1.490
—
1.680
V
—
37
mA
35
—
23
35
—
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 = +4.5V to +5.5V
TA = –40°C
Symbol
TA = 0°C
TA = +25°C
TA = +85°C
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
Unit
VCC
Power Supply Voltage
4.5
—
5.5
4.5
—
5.5
4.5
—
5.5
4.5
—
5.5
V
VIH
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
—
—
20
—
—
20
—
14
20
—
—
20
mA
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.
3
SY100E417
Micrel
PECL OUTPUT DC ELECTRICAL CHARACTERISTICS
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
35
—
—
35
—
23
35
—
—
37
mA
NOTES:
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
410
380
510
530
610
680
410
380
510
530
610
680
410
380
510
530
610
680
410
380
510
530
610
680
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
SY100E417JC
J28-1
Commercial
SY100E417JCTR
J28-1
Commercial
Ordering
Code
4
Package
Type
Operating
Range
SY100E417JI
J28-1
Industrial
SY100E417JITR
J28-1
Industrial
SY100E417
Micrel
28 LEAD PLCC (J28-1)
Rev. 03
MICREL-SYNERGY
TEL
3250 SCOTT BOULEVARD
+ 1 (408) 980-9191
FAX
SANTA CLARA
+ 1 (408) 914-7878
WEB
CA 95054 USA
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
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