3.3V/5V LVTTL/LVCMOS-to-
DIFFERENTIAL LVPECL
TRANSLATOR
FEATURES
s
3.3V and 5V power supply options
s
300ps typical propagation delay
s
Differential LVPECL output
s
I
CC
Max 20mA
s
PNP LVTTL input for minimal loading
s
Q output will default HIGH with inputs open
s
High bandwidth to 800MHz typical
s
Available in 8-pin MSOP and SOIC package
SY10EPT20V
SY100EPT20V
DESCRIPTION
The SY10/100EPT20V is a TTL/CMOS to differential
PECL translator. Capable of running from a 3.3 or 5V
supply, the part can be used in either LVTTL/LVCMOS/
LVPECL or TTL/CMOS/PECL systems.
The device only requires a single positive supply of
3.3V or 5V - no negative supply is required.
The tiny 8-pin MSOP package and the low skew, dual
gate design of the EPT20V makes it ideal for those
applications where space, performance, and low power
are at a premium.
PIN CONFIGURATION/BLOCK DIAGRAM
NC 1
Q 2
/Q 3
NC 4
LVPECL
LVTTL
PIN NAMES
Pin
Function
Differential LVPECL Output
LVTTL Input
Positive Supply
Ground
8 V
CC
7 D
6 NC
5 GND
Q, /Q
D
V
CC
GND
(Available in 8-pin SOIC or 8-pin MSOP)
Rev.: A
Amendment: /1
1
Issue Date: July 2000
Micrel
SY10EPT20V
SY100EPT20V
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
CC
V
I
I
I
I
OUT
Paramter
Power Supply Voltage
TTL Input Voltage
TTL Input Current
PECL Output Current
–Continuous
–Surge
Storage Temperature
Operating Temperature
Value
–0.5 to +7.0
–0.5 to V
CC
–30 to +5.0
50
100
–65 to +150
–40 to +85
°C
°C
Unit
V
V
mA
mA
TRUTH TABLE
D
H
L
Open
Q
H
L
H
/Q
L
H
L
T
store
T
A
NOTE:
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS
are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections
of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions
for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
±10%
or +5.0V
±10%
T
A
= –40
°
C
Symbol
I
CC
Parameter
Power Supply Current
Min.
—
Max.
20
T
A
= 0
°
C
Min.
—
Max.
20
—
T
A
= +25
°
C
Min.
Typ.
—
Max.
20
T
A
= +85
°
C
Min.
—
Max.
20
Unit
mA
Condition
—
TTL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
±10%
or +5.0V
±10%
T
A
= –40
°
C
Symbol
V
IH
V
IL
I
IH
I
IL
V
IK
Parameter
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Input Clamp Voltage
Min.
2.0
—
—
—
—
—
Max.
—
0.8
20
100
–0.2
–1.2
T
A
= 0
°
C
Min.
2.0
—
—
—
—
—
Max.
—
0.8
20
100
–0.2
–1.2
T
A
= +25
°
C
Min.
2.0
—
—
—
—
—
Typ.
—
—
—
—
—
—
Max.
—
0.8
20
100
–0.2
–1.2
T
A
= +85
°
C
Min.
2.0
—
—
—
—
—
Max.
—
0.8
20
100
–0.2
–1.2
Unit
V
V
µA
mA
V
Condition
—
—
V
IN
= 2.7V
V
IN
= V
CC
V
IN
= 0.5V
I
IN
= –18mA
PECL DC ELECTRICAL CHARACTERISTICS
V
CC
= +3.3V
±10%
or +5.0V
±10%
T
A
= –40
°
C
Symbol
V
OH
Parameter
Min.
Max.
4110
4120
3350
3445
Output HIGH Voltage
(1)
10EPT 3920
100EPT 3915
Output LOW Voltage
(1)
10EPT 3050
100EPT 3170
3050
3190
3370
3380
3050
3190
—
—
3370
3380
3050
3190
3405
3380
T
A
= 0
°
C
Min.
3980
3975
Max.
4160
4120
T
A
= +25
°
C
Min.
4020
3975
Typ.
—
—
Max.
4190
4120
T
A
= +85
°
C
Min.
4090
3975
Max.
4280
4120
mV
Unit
mV
Condition
V
OL
NOTES:
1. These values are for V
CC
= 5.0V. Level Specifications will vary 1:1 with V
CC
.
2
Micrel
SY10EPT20V
SY100EPT20V
AC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= +3.3V
±10%
or +5.0V
±10%
T
A
= –40
°
C
Symbol
t
PLH
t
PHL
t
skpp
f
MAX
f
MAX
t
r
t
f
Parameter
Propagation Delay
(1)
Part-to-Part Skew
(2)
Maximum Input Frequency
Maximum Toggle Frequency
Output Rise/Fall Time
(20% to 80%)
Min.
100
—
350
—
200
Max.
600
500
—
800
500
T
A
= 0
°
C
Min.
100
—
350
—
200
Max.
600
500
—
800
500
T
A
= +25
°
C
Min.
100
—
350
—
200
Typ.
—
—
—
—
—
Max.
600
500
—
800
500
T
A
= +85
°
C
Min.
100
—
350
—
200
Max. Unit
600
500
—
800
500
ps
ps
MHz
MHz
ps
Condition
50Ω to V
CC
– 2.0V
50Ω to V
CC
– 2.0V
50Ω to V
CC
– 2.0V
50Ω to V
CC
– 2.0V
50Ω to V
CC
– 2.0V
NOTES:
1. Input Rise Time < 1.0ns.
2. Guaranteed by design. Not tested in production.
PRODUCT ORDERING INFORMATION
Ordering
Code
SY10EPT20VZC
SY10EPT20VZCTR
SY10EPT20VKC
SY10EPT20VKCTR
SY100EPT20VZC
SY100EPT20VZCTR
SY100EPT20VKC
SY100EPT20VKCTR
Package
Type
Z8-1
Z8-1
K8-1
K8-1
Z8-1
Z8-1
K8-1
K8-1
Operating
Range
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
V
CC
Range
(V)
+3.3V
±5%
+3.3V
±5%
+3.3V
±5%
+3.3V
±5%
+3.3V
±5%
+3.3V
±5%
+3.3V
±5%
+3.3V
±5%
3