SY89250VMG [MICREL]
ENHANCED DIFFERENTIAL RECEIVER; 增强差分接收器
| 型号： | SY89250VMG |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | ENHANCED DIFFERENTIAL RECEIVER |
| 文件： | 总6页 (文件大小：55K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
Precision Edge
ENHANCED DIFFERENTIAL
RECEIVER
SY89250V
FEATURES
■ 3.3V and 5V power supply options
■ 250ps propagation delay
■ Very high voltage gain
®
Precision Edge
DESCRIPTION
■ Ideal for Pulse Amplifier and Limiting Amplifier
applications
The SY89250V is a differential PECL/ECL receiver/buffer
in a space saving (2mm × 2mm) MLF™ package. The device
is functionally equivalent to the SY100EL16VC, but features
■ Data synchronous Enable/Disable (/EN) on QHG and
/QHG provides for complete glitchless gating of the
outputs
a 70% smaller footprint. It provides a V output for either
BB
single-ended application or as a DC bias for AC-coupling to
the device.
■ Ideal for gating timing signals
■ Complete solution for high quality, high frequency
The SY89250V provides an /EN input which is synchro-
nized with the data input (D) signal in a way that provides
glitchless gating of the Q and /Q outputs. When the /EN
crystal oscillator applications
■ Available in an ultra-small 8-pin (2mm × 2mm)
HG
HG
MLF™ package
signal is LOW, the input is passed to the outputs and the data
output equals the data input. When the data input is HIGH and
the /EN goes HIGH, it will force the Q LOW and the /Q
HG
HG
HIGH on the next negative transition of the data input. If the
data input is LOW when the /EN goes HIGH, the next data
transition to a HIGH is ignored and Q
remains LOW and
APPLICATIONS
HG
/Q remains HIGH. The next positive transition of the data
HG
input is not passed on to the data outputs under these
■ Oscillator modules
conditions. The Q
and /Q
outputs remain in their dis-
HG
HG
abled state as long as the /EN input is held HIGH. The /EN
input has no influence on the /Q output and the data input is
passed on (inverted) to this output whether /EN is HIGH or
LOW. This configuration is ideal for crystal oscillator applica-
tions, where the oscillator can be free running and gated on
and off synchronously without adding extra counts to the
output.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
BLOCK DIAGRAM
FUNCTIONAL CROSS REFERENCE
Micrel Part Number PECL/ECL
SY89250V 100k
Functional Cross
SY100EL16VC
/Q
D
VCC
QHG
1
8
7
6
5
2
3
VBB
/EN
/QHG
VEE
OE
LEN
Q
VBB
4
LATCH
D
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
Rev.: B
Amendment:/0
M9999-052505
hbwhelp@micrel.com or (408) 955-1690
1
Issue Date: May 2005
Precision Edge®
SY89250V
Micrel, Inc.
PACKAGE/ORDERING INFORMATION
Ordering Information(1)
/Q
D
1
2
3
4
8
VCC
QHG
/QHG
VEE
Package
Operating
Range
Package
Marking
Lead
Finish
7
6
5
Part Number
Type
MLF-8
MLF-8
MLF-8
VBB
/EN
SY89250VMI
SY89250VMITR(2)
Industrial
Industrial
Industrial
250
250
Sn-Pb
Sn-Pb
SY89250VMG
250 with
Pb-Free
8-Pin MLF™
Pb-Free bar-line indicator
NiPdAu
(Ultra-Small Outline)
SY89250VMGTR(2)
MLF-8
Industrial
250 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.
PIN DESCRIPTION
Pin Number
Pin Name
Type
Pin Function
1
2
/Q
D
100k
100k
Single-Ended PECL/ECL Feedback Output.
Single-Ended PECL/ECL Input: The signal input includes an internal 75kΩ
pull-down ECL Input resistor. If input is left open, Q output will default to
LOW. See “Input Interface Applications” section for single-ended inputs.
3
4
VBB
/EN
Reference
Output Voltage
Bias Voltage: VCC–1.3V. Used as reference voltage when AC-coupling to
the D input. Max sink/source is ±0.5mA.
Enable Input
/EN Input which is synchronized with data input (D) signal in a way that
provides glitchless gating of QHG and /QHG outputs. Includes internal 75kΩ
pull-down resistor. Default is LOW
5
VEE,
Exposed Pad
Negative
Power Supply
Negative Power Supply: VEE and exposed pad must be tied to most
negative supply. For PECL/LVPECL connect to ground.
6, 7
/QHG, QHG
100k
ECL Output
Differential PECL/ECL Output: Defaults to LOW if D inputs left open.
See “Output Interface Applications” section for recommendations on
terminations.
8
VCC
Positive
Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors.
Power Supply
TRUTH TABLE
/EN
0
QHG Output
Data
1
Logic Low
M9999-052505
hbwhelp@micrel.com or (408) 955-1690
2
Precision Edge®
SY89250V
Micrel, Inc.
Absolute Maximum Ratings(1)
Operating Ratings(2)
Power Supply Voltage (V ) ....................... –0.5V to +6.0V Power Supply Voltage |V –V | .... 3.3V ±10% or 5V ±10%
CC
CC EE
ECL Input Voltage (V ) ............................0V to V +0.5V
Ambient Temperature (T ) ......................... –40°C to +85°C
IN
CC
A
(3)
Voltage Applied to Output at HIGH State
Package Thermal Resistance,
(V
) ........................................................ –0.5V to V
MLF™ (θ )
OUT
CC
JA
Still-Air .............................................................93°C/W
Current Applied to Output at LOW State
(I ) .......................................... Twice the rated I mA
MLF™ (ψ ), .......................................................60°C/W
JB
OUT
OL
Lead Temperature (soldering, 20 sec.) ..................... 260°C
Storage Temperature (T ) ....................... –65°C to +150°C
S
DC ELECTRICAL CHARACTERISTICS
TA = –40°C to +85°C; unless otherwise stated.
Symbol
Parameter
Condition
|VCC–VEE
|VCC–VEE
Min
Typ
Max
Units
VEE
Power Supply
|
|
3.0
4.5
3.3
5.0
3.6
5.5
V
V
IEE
IIH
Power Supply Current
Input HIGH Current
46
mA
µA
V
150
VBB
Output Reference Voltage
V
–1.38 V –1.32 V –1.26
CC CC CC
DC ELECTRICAL CHARACTERISTICS
VCC = +3.3V ±10% or +5V ±10% and VEE = 0V; VCC = 0V and VEE = –3.3V ±10% or –5V ±10%; TA = –40°C to +85°C; unless otherwise stated.
Symbol
VOH
VOL
VIH
Parameter
Condition
Note 4
Min
Typ
Max
Units
V
Output HIGH Voltage
Output LOW Voltage
Input HIGH Voltage
Input LOW Voltage
Output Reference Voltage
Minimum Input Swing
Input HIGH Current
Input LOW Current
V
V
V
V
–1.085
V
V
V
V
–0.880
CC
CC
Note 4
–1.830
–1.165
–1.810
–1.38
–1.555
–0.880
–1.475
–1.26
V
CC
CC
CC
CC
CC
CC
V
VIL
V
VBB
VPP
IIH
V
V
V
CC
CC
150
mV
µA
µA
150
IIL
0.5
Notes:
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.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB.
4. Output loaded with 50Ω to V –2V.
CC
M9999-052505
hbwhelp@micrel.com or (408) 955-1690
3
Precision Edge®
SY89250V
Micrel, Inc.
AC ELECTRICAL CHARACTERISTICS
VEE = VEE(min) to VEE(max); VCC = GND; TA = –40°C to +85°C; unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
tpd
Propagation Delay to:
Q, /Q Output
D (Diff)
D (SE)
D (Diff)
D (SE)
380
430
730
780
ps
ps
ps
ps
QHG, /QHG Output
tS
Set-Up Time
/EN
/EN
150
150
5
ps
ps
ps
mV
V
tH
Hold Time
tSKEW
VPP
VCMR
tr, tf
Duty Cycle Skew
Minimum Input Swing
Common Mode Range
(Diff) Note 5
20
/EN Note 6
/EN Note 7
150
–1.3
100
–0.4
Output Q Rise/Fall Times
(20% to 80%)
At full output swing
225
350
ps
Notes:
5. Duty cycle skew is the difference between a t propagation delay through a device.
pd
6. Minimum input swing for which AC parameters are guaranteed. The device has a DC gain of ≈ 40 to Q, /Q outputs and a DC gain of ≈ 200 or higher
to /Q , Q outputs.
HG
HG
7. 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 V (min) and 1V. The lower end of the CMR range varies 1:1 with V . The numbers in
PP
EE
the spec table assume a nominal V = –3.3V. Note for PECL operation, the V
(min) will be fixed at 3.3V – |V
(min)|.
EE
CMR
CMR
TIMING DIAGRAM
D
tH
tS
/EN
Q
QHG
M9999-052505
hbwhelp@micrel.com or (408) 955-1690
4
Precision Edge®
SY89250V
Micrel, Inc.
OUTPUT INTERFACE APPLICATIONS
VCC
R1
R1
R2
VCC
VCC
VCC
VCC
ZO = 50Ω
ZO = 50Ω
ZO = 50Ω
ZO = 50Ω
50Ω
50Ω
VCC —2V
R2
VCC = 3.3V; R = 50Ω
pd
C (Optional)
0.01µF
VCC = 3.3V; R1 = 130Ω, R2 = 82Ω
VCC = 5V; R1 = 83Ω, R2 = 125Ω
Rpd
VCC = 5V; R = 100Ω
pd
Figure 1b. Three Resistor “Y Termination”
Figure 1a. Parallel Thevenin-Equivalent Termination
VCC
VCC
R1
R2
R1
O = 50Ω
R3
VCC
VCC
Z
VCC —2V
R2
R4
V
CC —1.3V
VCC = 3.3V; R1 = 130Ω, R2 = 82Ω, R3 = 1kΩ, R4 = 1.6kΩ,
CC = 5V; R1 = 83Ω, R2 = 125Ω, R3 = 1kΩ, R4 = 2.8kΩ,
V
Figure 1c. Terminating Unused I/O
RELATED PRODUCT AND SUPPORT DOCUMENTATION
Part Number
Function
Data Sheet Link
SY89306/316V
3.3V/5V 2.5GHz PECL/ECL
Differential Receiver/Buffer
www.micrel.com/product-info/products/sy89306-316v.shtml
SY89206/216V
HBW Solutions
3.3V/5V 1GHz PECL/ECL
Differential Receiver/Buffer
www.micrel.com/product-info/products/sy89206-216v.shtml
www.micrel.com/product-info/products/solutions.shtml
New Products and Applications
M9999-052505
hbwhelp@micrel.com or (408) 955-1690
5
Precision Edge®
SY89250V
Micrel, Inc.
8 LEAD ULTRA-SMALL EPAD-MicroLeadFrame™ (MLF-8)
Package
EP- Exposed Pad
Die
CompSide Island
Heat Dissipation
Heat Dissipation
VEE
Heavy Copper Plane
VEE
Heavy Copper Plane
PCB Thermal Consideration for 8-Pin MLF™ Package
Package Notes:
1. Package meets Level 2 qualification.
2. All parts are dry-packaged before shipment.
3. Exposed pads must be soldered to a ground for proper thermal management.
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB 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.
M9999-052505
hbwhelp@micrel.com or (408) 955-1690
6
相关型号：
©2020 ICPDF网 联系我们和版权申明