MICREL SY55851UKG

Micrel, Inc.
SuperLite™
SY55851
SuperLite™
SY55851A
2.5V/3V, 3.0GHz CML
AnyGate®ANY LOGIC
WITH 50Ω or 100Ω OUTPUTS
SY55851
SY55851A
FEATURES
■ Guaranteed AC parameters over temperature:
• fMAX > 3.0GHz (SY55851A)
• tr / tf < 100ps
• Propagation delay < 280ps
■ Guaranteed operation over –40°C to +85°C
temperature range
■ Wide supply voltage range: 2.3V to 3.6V
■ Single IC provides 8 logic functions
■ 2:1 MUX capability
■ Fully differential I/O
■ Source terminated CML outputs for fast edge rates:
• SY55851 for 100Ω load
• SY55851A for 50Ω load
■ Guaranteed matched propagation delays:
• Select (S)-to-out: < 280ps
• Input (A and B)-to-out: < 280ps
■ Accepts PECL, LVPECL, CML input signals
■ Functions as a PECL/LVPECL-to-CML translator
■ Available in a 10-pin (3mm × 3mm) MSOP package
SuperLite™
DESCRIPTION
The SY55851 and SY55851A are highly flexible,
universal logic gates capable of up to 3.0GHz operation
(SY55851A). These AnyGate® differential logic devices
will produce all possible logic functions of two Boolean
variables. They can be configured as any of the following
gates: AND, NAND, OR, NOR, XOR, XNOR, DELAY,
NEGATION (NOT). The SY55851 and SY55851A can
also function as a 2-input multiplexer.
The SY55851 has an output stage optimized for 100Ω
loads, and the SY55851A is optimized for 50Ω loads.
The differential inputs for both devices are normally
terminated with a single resistor (100Ω) between the true
and complement pins.
APPLICATIONS
■
■
■
■
FUNCTIONAL BLOCK DIAGRAM
Port bypass
Data communication systems
Wireless communication systems
Telecom systems
S
A
B
2
2
2
0 S
2
Q
1
AnyGate is a registered trademarks of Micrel, Inc.
SuperLite is trademarks of Micrel, Inc.
M9999-072909
hbwhelp@micrel.com or (408) 955-1690
Rev.: E
1
Amendment: /0
Issue Date: July 2009
SuperLite™
SY55851
SY55851A
Micrel, Inc.
PACKAGE/ORDERING INFORMATION
Ordering Information(1)
S 1
10 VCC
/S 2
9 /B
A 3
8 B
/A 4
7 Q
GND 5
6 /Q
8-Pin MSOP (K10-1)
Part Number
Package
Type
Operating
Range
Package
Marking
Lead
Finish
SY55851UKI
K10-1
Industrial
851U
Sn-Pb
SY55851UKITR(2)
K10-1
Industrial
851U
Sn-Pb
SY55851AUKI
K10-1
Industrial
851A
Sn-Pb
SY55851AUKITR(2)
K10-1
Industrial
851A
Sn-Pb
SY55851UKG(3)
K10-1
Industrial
851U with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
SY55851UKGTR(2, 3)
K10-1
Industrial
851U with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
SY55851AUKG(3)
K10-1
Industrial
851A with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
SY55851AUKGTR(2, 3)
K10-1
Industrial
851A with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
Notes:
1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only.
2. Tape and Reel.
3. Pb-Free package recommended for new designs.
PIN DESCRIPTION
Pin Number
Pin Name
1, 2
S, /S
CML, PECL, LVPECL Input Selector: This differential CML input is one of the inputs to
the logic block. It represents either one Boolean input for a 2-variable logic function,
or the select input for a 2-input MUX.
3, 4
A, /A
CML, PECL, LVPECL Input: This is one of the differential inputs to the logic block. For
a 2-variable logic function, it is either a constant value or a Boolean input. For a 2input MUX, this signal represents the output when S is set to logic zero.
5
GND
Ground.
6, 7
/Q, Q
Differential CML Output: This is the differential CML output for the logic block. For
termination guidelines, see Figure 3.
8, 9
B, /B
CML, PECL, LVPECL Input: This is one of the differential inputs to the logic block. For
a 2-variable logic function, it is either a constant value or a Boolean input. For a 2input MUX, this signal represents the output when S is set to logic one.
10
VCC
VCC.
M9999-072909
hbwhelp@micrel.com or (408) 955-1690
Pin Function
2
SuperLite™
SY55851
SY55851A
Micrel, Inc.
FUNCTIONAL DESCRIPTION
input at static logic zero at VCC ≥ 3.0V, leave both inputs
unconnected or tie the complement input to VCC. For VCC <
3.0V applications, connect the complement input to VCC
and leave the true input unconnected. To make an input
static logic one, connect the true input to VCC, and leave
the complement input unconnected. These are the only safe
ways to cause inputs to be at a static value. In particular,
no input pin should be directly connected to ground. All NC
(no connect) pins should be unconnected.
Establishing Static Logic Inputs
The true pin of an input pair is internally biased to ground
through a 75kΩ resistor. The complement pin of an input
pair is internally biased to VCC/2 through an internal voltage
divider consisting of two 75kΩ resistors. Since some logic
functions necessitate an output to be connected to two
inputs, SY55851/A inputs have no internal terminations.
Typically, one resistor between the true and complement
input is all that is required, as per Figure 3. To keep an
VCC
Input
NC
/Input
NC
Input
NC
/Input
For VCC
Figure 1. Hard Wiring A Logic “1”
Note 1.
3.0V Applications
(1)
Input is either A, B, S input, and /Input is either /A, /B, /S input.
NC
Input
VCC
/Input
For VCC < 3.0V Applications
Figure 2. Hard Wiring A Logic “0” (1)
M9999-072909
hbwhelp@micrel.com or (408) 955-1690
3
SuperLite™
SY55851
SY55851A
Micrel, Inc.
TRUTH TABLES
AND/NAND
β
A
S
A /S
/A
B
/B
NC
VCC
α
S
A /S
/A
B
/B
VCC
L
L
L
H
/Q (α ⋅ β)
H
L
L
H
L
L
H
L
H
L
H
H
H
L
α
A
B
β
S
α+β
Q
(α + β)
/Q
OR/NOR
Q α+β
/Q (α + β)
α
β
Q α⊕β
/Q (α ⊕ β)
S
A /S
/A
B
/B
H
L
L
H
H
L
H
L
L
H
H
H
L
H
H
H
H
L
α
A
B
β
S
α⊕β
Q
(α ⊕ β)
/Q
L
H
L
L
H
L
H
H
H
L
H
L
L
H
L
H
L
H
L
H
DELAY/NEGATION
S
A /S
/A
B
/B
VCC
L
H
XOR/XNOR
VCC
NC
(α
(α⋅⋅β)
/Q
L
β
S
A /S
/A
B
/B
α⋅β
Q
L
NC
α
β
S
Q α⋅β
β
α
α
B
Q α
/Q α
α
A
B
S
α
Q
α
/Q
L
X
L
L
H
H
X
L
H
L
A
β
B
S
β
Q
β
/Q
X
L
H
L
H
X
H
H
H
L
Q
/Q
NC
Q β
/Q β
S
2:1 MUX
A
S
0
Q
B
1
M9999-072909
hbwhelp@micrel.com or (408) 955-1690
4
H
B
/B
L
A
/A
SuperLite™
SY55851
SY55851A
Micrel, Inc.
CML TERMINATION AND TTL INTERFACE
All inputs accept the output from any other member of
this family. All outputs are source terminated 100Ω or 50Ω
CML differential drivers as shown in Figure 3. All inputs to
the SY55851/A must be externally terminated. SY55851/A
inputs are designed to accept a termination resistor between
the true and complement inputs of a differential pair. 0402
form factor chip resistors will fit with some trace fanout.
VCC
VCC
50Ω
100Ω
100Ω
50Ω
Q
50Ω
/Q
50Ω
100Ω
100Ω
Q
200Ω
/Q
100Ω
16mA
8mA
SY55851A
SY55851
Figure 3b. Differentially Terminated SY55851A
(50Ω Load CML Output)
Figure 3a. SY55851
(100Ω Load CML Output)
VCC
100Ω
VCC
100Ω
100Ω
Q
100Ω
50Ω
100Ω
/Q
VCC
50Ω
VCC
1k
8mA
TTL
Driver
VCC
VCC ≥ VCC (TTL Driver)
549Ω
SY55851
SY55851A
1k
S
/S
1.47k
SY55851
Figure 3c. Differentially Terminated SY55851
(50Ω Load CML Output)
M9999-072909
hbwhelp@micrel.com or (408) 955-1690
Figure 4. Interfacing TTL-to-CML Select Inputs
5
SuperLite™
SY55851
SY55851A
Micrel, Inc.
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Rating
VCC
Power Supply Voltage
VIN
Input Voltage
VOUT
CML Output Voltage
TA
Operating Temperature Range
TLEAD
Lead Temperature (soldering, 20sec.)
Tstore
Storage Temperature Range
θJA
Package Thermal Resistance
(Junction-to-Ambient)
θJC
Package Thermal Resistance
(Junction-to-Case)
Note 1.
Value
Unit
–0.5 to +6.0
V
–0.5 to VCC +0.5
V
VCC –1.0 to VCC +0.5
V
–40 to +85
°C
260
°C
–65 to +150
°C
113
96
°C/W
°C/W
42
°C/W
–Still-Air (multi-layer PCB)
–500lfpm (multi-layer PCB)
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
TA = –40°C to +85°C(2)
Symbol
Parameter
Min.
Typ.
Max.
Unit
Condition
VCC
Power Supply Voltage
2.3
—
3.6
V
ICC
Power Supply Current
SY55851
SY55851A
—
—
—
46
40
60
mA
mA
No Load
No Load
Condition
CML DC ELECTRICAL CHARACTERISTICS
VCC = 2.3V to 3.6V; GND = 0V; TA = –40°C to +85°C
Symbol
Parameter
Min.
Typ.
Max.
Unit
VID
Differential Input Voltage
100
—
—
mV
VIH
Input HIGH Voltage
1.6
—
VCC
V
VIL
Input LOW Voltage
1.5
—
VCC – 0.1
V
VOH
Output HIGH Voltage
VCC – 0.040
VCC – 0.010
VCC
V
No Load
VOL
Output LOW Voltage
VCC – 1.00
VCC – 0.800
VCC – 0.65
V
No Load
VOUT
Output Voltage Swing(3)
0.650
0.800
1.00
V
No Load
SY55851
—
—
0.400
0.200
—
—
V
V
100Ω Load(4)
50Ω Load(5) (SY55851)
SY55851A
—
0.400
—
V
50Ω Load(6) (SY55851A)
Output Source Impedance
SY55851
SY55851A
80
40
100
50
120
60
Ω
Ω
ROUT
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
The DC parameters are guaranteed after thermal equilibrium has been established.
Actual voltage levels and differential swing will depend on customer termination scheme. Refer to the “CML Termination” diagram for more details.
Applies to SY55851: 200Ω termination resistor across Q and /Q. See Figure 3a.
Applies to the SY55851. See Figure 3c.
Applies to the SY55851A: 100Ω termination resistor across Q and /Q. See Figure 3b.
M9999-072909
hbwhelp@micrel.com or (408) 955-1690
6
SuperLite™
SY55851
SY55851A
Micrel, Inc.
AC ELECTRICAL CHARACTERISTICS(1, 2)
VCC = 2.3V to 3.6V; GND = 0V; TA = –40°C to +85°C
Symbol
Min.
Typ.
Max.
Unit
Max. Operating Frequency
SY55851
SY55851A
2.5
3.0
—
—
—
—
GHz
GHz
tPD(S-Q)
Propagation Delay
SY55851
(S to Q)
SY55851A
—
130
—
—
350
280
ps
ps
tPD
(A-Q and B-Q)
Propagation Delay
(A-Q and B-Q) SY55851
SY55851A
—
130
—
—
350
280
ps
ps
tr
tf
CML Output Rise/Fall Times
(20% to 80%)
SY55851
SY55851A
—
—
—
65
110
100
ps
ps
fMAX(3)
Note 1.
Parameter
SY55851: outputs terminated to 50Ω equivalent load. See Figure 3c.
SY55851A: outputs terminated to 50Ω load. See Figure 3b
Note 2.
Specification for packaged product only.
Note 3.
fMAX represents a maximum toggle rate in which the output still meets CML logic swing.
M9999-072909
hbwhelp@micrel.com or (408) 955-1690
7
Condition
SuperLite™
SY55851
SY55851A
Micrel, Inc.
10-PIN MSOP (K10-1)
Rev. 00
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
WEB
USA
http://www.micrel.com
The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2005 Micrel, Incorporated.
M9999-072909
hbwhelp@micrel.com or (408) 955-1690
8