Datasheet SY100E417 Datasheet (MICREL)

QUINT L VPECL-TO-PECL
OR PECL-TO-L VPECL
TRANSLATOR

SY100E417

FEATURES

■ 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

BLOCK DIAGRAM

Q

D

0

D

0

D

1

D

1

D

2

D

2

D

3

D

3

D

4

D

4

V

BB

0

Q

0

Q

1

Q

1

Q

2

Q

2

Q

3

Q

3

Q

4

Q

4

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

DESCRIPTION

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.

Rev.: B Amendment: /1

1

Issue Date: March, 1999

Micrel

SY100E417

PIN CONFIGURATION

4

3

4

D

D

D

25 24 23 22 21 20 19

26

D

3

27

D

2

28

D

GND

V

BB

D
D

2

1
2
3

0

4

0

TOP VIEW

PLCC

J28-1

567891011

1

1

D

D

CCO

V

BB

V

CC_

V

0

Q

4

4

CCO

Q

Q

V

18

Q

3

17

Q

3

16

V

CC

15

Q

2

14

Q

2

13

V

CCO

12

Q

1

1

0

Q

Q

CCO

V

PIN NAMES

Pin 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

CC VCC for Internal Circuitry

V

PECL INPUT DC ELECTRICAL CHARACTERISTICS

VCC_VBB = VCC = +4.5V 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

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
VIL Input LOW Voltage
VPP Minimum Peak-to-Peak 150 — — 150 — — 150 — — 150 — — mV

Input
IIH Input HIGH Current — — 150 — — 150 — — 150 — — 150 µA
IIL Input LOW Current Dn 0.5 — — 0.5 — — 0.5 — — 0.5 — — µA

VBB Output Reference

CC Power Supply Current — — 20 — — 20 — 14 20 — — 20 mA

I

NOTE:

1. These levels are for VCC_VBB = 5.0V. Level specifications will vary 1:1 with VCC_VBB.

(1)

(1)

3.835 — 4.120 3.835 — 4.120 3.835 — 4.120 3.835 — 4.120 V

3.190 — 3.515 3.190 — 3.525 3.190 — 3.525 3.190 — 3.525 V

Dn –600 — — –600 — — –600 — — –600 — —

(1)

3.620 — 3.740 3.620 — 3.740 3.620 — 3.740 3.620 — 3.740 V

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Micrel

SY100E417

LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS

VCC = +4.5V to +5.5V; VCCO = +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

VCCO Power Supply Voltage 3.0 — 3.8 3.0 — 3.8 3.0 3.3 3.8 3.0 — 3.8 V
VOH Output HIGH Voltage
VOL Output LOW Voltage

CCO Power Supply Current ——35 —— 35 — 23 35 ——37 mA

I

NOTE:

1. These levels are for VCCO = 3.3V. Level specifications will vary 1:1 with VCCO.

(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

LVPECL INPUT DC ELECTRICAL CHARACTERISTICS

VCC_VBB = +3.0V to +3.8V

Symbol 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
VIL Input LOW Voltage
VPP Minimum Peak-to-Peak 150 ——150 ——150 ——150 ——mV

Input
IIH Input HIGH Current ——150 ——150 ——150 ——150 µA
IIL Input LOW Current Dn 0.5 ——0.5 ——0.5 ——0.5 ——µA

VBB Output Reference

CC Power Supply Current ——20 ——20 — 14 20 ——20 mA

I

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.

(1)

; VCC = +4.5V to +5.5V

TA = –40°CTA = 0°CTA = +25°CTA = +85°C

(2)

(2)

2.135 — 2.420 2.135 — 2.420 2.135 — 2.420 2.135 — 2.420 V

1.490 — 1.825 1.490 — 1.825 1.490 — 1.825 1.490 — 1.825 V

Dn –600 ——–600 ——–600 ——–600 ——

(2)

1.92 — 2.04 1.92 — 2.04 1.92 — 2.04 1.92 — 2.04 V

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Micrel

SY100E417

PECL OUTPUT DC ELECTRICAL CHARACTERISTICS

VCC = VCCO = +4.5V 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

VCCO Power Supply Voltage 4.5 — 5.5 4.5 — 5.5 4.5 — 5.5 4.5 — 5.5 V
VOH Output HIGH Voltage
VOL Output LOW Voltage
ICCO Power Supply Current ——35 —— 35 — 23 35 ——37 mA

NOTES:

1. These levels are for VCCO = 5.0V. Level specifications will vary 1:1 with VCCO.

(1)

3.915 — 4.120 3.975 — 4.120 3.975 — 4.120 3.975 — 4.120 V

(1)

3.170 — 3.445 3.190 — 3.380 3.190 — 3.380 3.190 — 3.380 V

AC ELECTRICAL CHARACTERISTICS

(1)

TA = –40°CTA = 0°CTA = +25°CTA = +85°C

Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit

t

PLH Propagation Delay Diff. 410 510 610 410 510 610 410 510 610 410 510 610 ps

tPHL D to Q S.E. 380 530 680 380 530 680 380 530 680 380 530 680
t

skew Within-Device Skew

Output-to-Output

Part-to-Part (Diff.)

Duty Cycle (Diff.)
VPP Minimum Input Swing
VCMR Common Mode Range

(4)

(2)

— 20 100 — 20 100 — 20 100 — 20 100 ps

(2)

— 20 200 — 20 200 — 20 200 — 20 200

(3)

— 25 ——25 ——25 ——25 —

150 ——150 ——150 ——150 ——mV

(5)

V
VPP < 500mV 1.3 — VCC–0.2 1.2 — VCC–0.2 1.2 — VCC–0.2 1.2 — VCC–0.2
VPP ≥ 500mV 1.5 — VCC–0.2 1.4 — VCC–0.2 1.4 — VCC–0.2 1.4 — VCC–0.2

tr Output Rise/Fall Times Q 320 — 580 320 — 580 320 — 580 320 — 580 ps
tf (20% to 80%)

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 Package Operating

Code Type Range

SY100E417JC J28-1 Commercial
SY100E417JCTR J28-1 Commercial

Ordering Package Operating

Code Type Range

SY100E417JI J28-1 Industrial
SY100E417JITR J28-1 Industrial

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Micrel

28 LEAD PLCC (J28-1)

SY100E417

Rev. 03

MICREL-SYNERGY 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA

TEL + 1 [phone] FAX + 1 [phone] WEB http://www.micrel.com

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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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