SY10ELT28KCTR [MICREL]
5V TTL-TO-DIFFERENTIAL PECL AND DIFFERENTIAL PECL-TO-TTL TRANSLATOR; 5V TTL至差分PECL与差分PECL - TO- TTL译者
| 型号： | SY10ELT28KCTR |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | 5V TTL-TO-DIFFERENTIAL PECL AND DIFFERENTIAL PECL-TO-TTL TRANSLATOR |
| 文件： | 总7页 (文件大小：87K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
5V TTL-TO-DIFFERENTIAL PECL
AND DIFFERENTIAL PECL-TO-TTL
TRANSLATOR
SY10ELT28
SY100ELT28
FINAL
FEATURES
DESCRIPTION
ꢀ Guaranteed AC parameters over temperature:
The SY10/100ELT28 is a differential PECL-to-TTL
translator and a TTL-to-differential PECL translator in a
single package. Because PECL (Positive ECL) levels are
used, only +5V and ground are required. The small outline
8-pin package and the dual translation design of the
ELT28 makes it ideal for applications which are sending
and receiving signals across a backplane.
• fMAX > 160MHz (TTL)
• < 5.5ns PECL-to-TTL propagation delay
• < 1.5ns tr / tf; PECL output
• < 1.3ns TTL-to-PECL propagation delay
ꢀ Wide temperature range: –40°C to +85°C
ꢀ 5V power supply
ꢀ Q
output will default low with inputs left open
TTL
or < 1.3V
ꢀ Q
output will default high with inputs left open
ECL
ꢀ Internal PECL input pulldown resistors
ꢀ Available in 8-pin MSOP and SOIC packages
PIN NAMES
PIN CONFIGURATION/BLOCK DIAGRAM
Pin
DTTL
Function
TTL Inputs
DECL
/DECL
QECL
/QECL
1
2
3
4
8
7
6
5
VCC
QTTL
TTL Outputs
QTTL
DTTL
GND
PECL
TTL
DECL, /DECL
QECL, /QECL
VCC
PECL Differential Inputs
PECL Differential Outputs
Positive Supply
GND
Ground
TOP VIEW
(Available in MSOP or SOIC package)
Rev.: B
Amendment:/0
Issue Date: February 2003
1
SY10ELT28
Micrel
SY100ELT28
(1)
ABSOLUTE MAXIMUM RATINGS
Symbol
Rating
Value
Unit
V
VCC
VIN
Power Supply Voltage
Input Voltage
–0.5 to +7.0
0 to +6.0
V
IOUT
PECL Output Current
–Continuous
–Surge
50
100
mA
TA
Operating Temperature Range
Storage Temperature Range
–40 to +85
°C
°C
Tstore
–65 to +150
θJA
Package Thermal Resistance
(Junction-to-Ambient)
–Still-Air (SOIC)
–500lfpm (SOIC)
160
109
°C/W
–Still-Air (MSOP)
–500lfpm (MSOP)
206
155
°C/W
°C/W
θJC
Package Thermal Resistance
(Junction-to-Case)
(SOIC)
(MSOP)
39
39
NOTE:
1. PermanentdevicedamagemayoccurifABSOLUTEMAXIMUMRATINGSareexceeded. Thisisastressratingonlyandfunctionaloperationisnotimplied
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.
(1)
DC ELECTRICAL CHARACTERISTICS
VCC = +5V ±10%; VEE = 0V
TA = –40°C
TA = +25°C
TA = +85°C
Symbol
VCC
Parameter
Power Supply Voltage
Power Supply Current
Min.
4.75
—
Typ.
5.0
23
Max.
Min.
4.75
—
Typ.
Max.
5.5
Min.
4.75
—
Typ.
Max. Unit Condition
5.5
40
5.0
22
5.0
25
5.5
40
V
ICC
40
mA
CIN
Input Capacitance (SOIC)
(MSOP)
—
—
—
—
—
—
—
—
0.75
1.1
—
—
—
—
—
—
—
—
pF
pF
NOTE:
1. 10/100KELT circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is
in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output parameters vary 1:1 with
VCC. VCC can vary ±0.25V.
(1)
10K PECL DC ELECTRICAL CHARACTERISTICS
V
= +5.0V ±10%
CC
TA = –40°C
Typ. Max.
TA = +25°C
TA = +85°C
Symbol
VOH
Parameter
Output HIGH Voltage
Output LOW Voltage
Min.
Min.
Typ.
Max.
Min.
Typ.
Max. Unit Condition
3920 4010 4110 4020 4105 4190 4090 4185 4280 mV 50Ω VCC–2V
3050 3200 3350 3050 3210 3370 3050 3227 3405 mV 50Ω VCC–2V
VOL
VIH
Input HIGH Voltage
(Single-Ended)
3770
—
4110 3870
—
4190 3940
—
4280 mV
VIL
Input LOW Voltage
(Single-Ended)
3050
—
3500 3050
—
3520 3050
—
3555 mV
VIHCMR
NOTES:
Input HIGH Voltage
Common Mode Range(2)
1.2
—
VCC
1.2
—
VCC
1.2
—
VCC
mV
1. 10/100KELT circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is
in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.
2. VIHCMR (Min) varies 1:1 with GND, VIHCMR (Max) varies 1:1 with VCC
.
2
SY10ELT28
SY100ELT28
Micrel
(1)
100K PECL DC ELECTRICAL CHARACTERISTICS
V
= +5.0V ±10%
CC
TA = –40°C
Typ. Max.
TA = +25°C
TA = +85°C
Min. Typ. Max. Unit Condition
Symbol
VOH
Parameter
Output HIGH Voltage
Output LOW Voltage
Min.
Min.
Typ.
Max.
3915 3995 4120 3975 4045 4120 3975 4050 4120 mV 50Ω VCC–2V
3170 3305 3445 3190 3295 3380 3190 3295 3380 mV 50Ω VCC–2V
VOL
VIH
Input HIGH Voltage
(Single-Ended)
3835
3190
2.2
—
—
—
4120 3835
—
—
—
4120 3835
—
—
—
4120 mV
VIL
Input LOW Voltage
(Single-Ended)
3525 3190
3525 3190
3525 mV
VIHCMR
Input HIGH Voltage
Common Mode Range(2)
VCC
2.2
VCC
2.2
VCC
V
NOTES:
1. 10/100KELT circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is
in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.
2. VIHCMR (Min) varies 1:1 with GND, VIHCMR (Max) varies 1:1 with VCC
.
(1)
TTL DC ELECTRICAL CHARACTERISTICS
V
= +5.0V ±10%
CC
TA = –40°C
TA = +25°C
TA = +85°C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max. Unit Condition
IIH
Input HIGH Current
—
—
10
—
20
100
—
—
—
—
20
100
—
—
—
—
20
100
µA
µA
VIN = 2.7V
VIN = VCC
IIL
Input LOW Current
—
2.0
—
—
—
–600
—
—
2.0
—
—
—
–600
—
—
2.0
—
—
—
–600
—
µA
V
VIN = 0.5V
VIH
Input HIGH Voltage
Input LOW Voltage
VIL
—
0.8
–1.2
—
—
0.8
–1.2
—
—
0.8
–1.2
—
V
VIK
Input Clamp Diode Voltage
Output HIGH Voltage
Output LOW Voltage
—
—
—
—
—
—
V
IIK = –18mA
IOH = –3.0mA
IOL = 24mA
VO = 0V
VOH
VOL
IOSC
NOTES:
2.4
—
2.9
0.29
—
2.4
—
3.4
0.26
—
2.4
—
3.9
0.27
—
V
0.5
–60
0.5
–60
0.5
–60
V
Output Short-Circuit Current –175
–175
–175
µA
1. 10/100KELT circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is
in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.
3
SY10ELT28
Micrel
SY100ELT28
AC ELECTRICAL CHARACTERISTICS
V
= +5.0V ±10%
CC
TA = –40°C
TA = +25°C
TA = +85°C
Symbol
Parameter
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max. Unit Condition
fMAX
MaximumFrequency(1) PECL 700
TTL 160
—
—
—
—
700
160
—
—
—
—
700
160
—
—
—
—
MHz
MHz
tPLH
tPHL
VPP
Propagation DECL ꢀ QTTL 1.5
—
—
5.5
1.2
1.5
0.2
1.5
0.2
200
—
1.2
—
5.5
1.5
1.5
0.2
1.5
0.2
200
—
—
5.5
1.35
5.5
ns
CL = 20pF
Delay
DTTL ꢀ QECL 0.2
ns 50Ω toVCC–2V
Propagation DECL ꢀ QTTL 1.5
—
5.5
5.5
—
ns
CL = 20pF
Delay
DTTL ꢀ QECL 0.2
—
1.2
1.2
800
1.5
—
1.35
ns 50Ω toVCC–2V
PECL Input VoltageSwing(2)
(Single-Ended)(3)
200
800
1000
1000
800
1000 mV
tr
tf
QECL Output Rise/Fall Times 0.15
(20% to 80%)
—
1.5
0.15
0.3
1.5
0.15
—
1.5
ns
50Ω to
VCC –2V
QTTL Output Rise/Fall Times
CL = 20pF;
(10% to 90%)
TTL
—
1.0
—
—
0.80
—
—
0.7
—
ns TTL Output
NOTES:
1. fMAX is defined as the maximum toggle frequency.
2. VPP (Min) is the minimum input swing for which AC parameters are guaranteed.
3. See “Timing Waveform.”
TIMING WAVEFORM
Q(0:9)
/Q(0:9)
150mV to 1200mV
PRODUCT ORDERING CODE
Ordering
Code
Package
Operating
Range
Marking
Code
Ordering
Code
Package
Type
Operating
Range
Marking
Code
Type
K8-1
K8-1
K8-1
K8-1
Z8-1
Z8-1
Z8-1
Z8-1
SY10ELT28KI(1)
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
Industrial
XL28
XL28
SY10ELT28KC
SY10ELT28KCTR*
SY100ELT28KC
SY100ELT28KCTR*
SY10ELT28ZC
K8-1
K8-1
K8-1
K8-1
Z8-1
Z8-1
Z8-1
Z8-1
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
XL28
XL28
SY10ELT28KITR*(1)
SY100ELT28KI(1)
SY100ELT28KITR*(1)
SY10ELT28ZI(1)
XL28
XL28
XL28
XL28
XEL28
XEL28
XEL28
XEL28
XEL28
XEL28
XEL28
XEL28
SY10ELT28ZITR*(1)
SY100ELT28ZI(1)
SY100ELT28ZITR*(1)
SY10ELT28ZCTR*
SY100ELT28ZC
SY100ELT28ZCTR*
*Tape and Reel
Note 1. Recommended for new designs.
4
SY10ELT28
SY100ELT28
Micrel
TERMINATION RECOMMENDATIONS
+5.0V
R1
82Ω
R1
82Ω
+5.0V
+5.0V
ZO = 50Ω
ZO = 50Ω
R2
130Ω
R2
130Ω Vt = VCC —2V
Figure 1. +5V PECL Parallel Termination–Thevenin Equivalent
+5.0V
+5.0V
Z = 50Ω
Z = 50Ω
50Ω
50Ω
source
destination
Rb
Figure 2. +5V PECL Three-Resistor “Y–Termination”
Notes:
1. Power-saving alternative to 4-resistor, Thevenin termination.
2. Place termination resistors as close to destination inputs as possible.
3. R resistor sets the DC bias voltage, equal to V . For 5.0V supply, R value is 110Ω.
b
t
b
5
SY10ELT28
Micrel
SY100ELT28
8 LEAD MSOP (K8-1)
Rev. 01
6
SY10ELT28
SY100ELT28
Micrel
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 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.
© 2003 Micrel, Incorporated.
7
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