SY100ELT25ZC [MICREL]
DIFFERENTIAL ECL-to-TTL TRANSLATOR; 差分ECL至TTL译者
| 型号： | SY100ELT25ZC |
| 厂家： | 
MICREL SEMICONDUCTOR |
| 描述： | DIFFERENTIAL ECL-to-TTL TRANSLATOR |
| 文件： | 总5页 (文件大小：71K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DIFFERENTIAL
ECL-to-TTL
SY100ELT25
TRANSLATOR
FEATURES
DESCRIPTION
■ 2.6ns typical propagation delay
■ Differential ECL inputs
The SY100ELT25 is a differential ECL-to-TTL
translator. Because ECL levels are used, a +5V, –5.2V
(or –4.5V) and ground are required. The small outline 8-
lead SOIC package and the single gate of the ELT25
makes it ideal for those applications where performance,
space and low power are at a premium.
■ 24mA TTL outputs
■ Flow-through pinouts
■ Available in 8-pin SOIC package
The VBB output allows the ELT25 to also be used in a
single-ended input mode. In this mode the VBB output is
tied to the D input for a non-inverting buffer or the D
input for an inverting buffer. If used the VBB pin should
be bypassed to ground via a 0.01µF capacitor.
PIN NAMES
PIN CONFIGURATION/BLOCK DIAGRAM
Pin
Function
Q
TTL Output
D
Differential ECL Inputs
Positive Supply
Negative Supply
Reference Output
Ground
V
EE
1
2
8
7
6
5
V
CC
VCC
VEE
VBB
GND
D
Q
3
4
NC
D
V
BB
GND
SOIC
TOP VIEW
Rev.: A
Amendment:/0
Issue Date: October 1999
1
Micrel
SY100ELT25
(1)
ABSOLUTE MAXIMUM RATINGS
TRUTH TABLE
D
L
D
H
Q
L
Symbol
VCC
Paramter
Value
Unit
V
Power Supply Voltage
ECL Input Voltage
–0.5 to +7.0
VEE to GND+0.5
–0.5 to +5.5
H
L
H
L
VIN
V
Open
Open
VOUT
Voltage Applied to
V
Output at HIGH State
IOUT
Current Applied to
Output at LOW State
Twice the
Rated IOL
mA
Tstore
TA
Storage Temperature
Operating Temperature
–65 to +150
–40 to +85
°C
°C
NOTE:
1. PermanentdevicedamagemayoccurifABSOLUTEMAXIMUMRATINGS
are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections
ofthisdatasheet. ExposuretoABSOLUTEMAXIMUMRATlNGconditions
for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 5.5V; VEE = –4.2V to –5.5V
TA = –40°C
TA = 0°C TA = +25°C TA = +85°C
Symbol
ICC
Parameter
Power Supply Current
Power Supply Current
Min. Max. Min. Max. Min. Max. Min. Max. Unit
Condition
—
—
14
14
—
—
14
14
9
14
14
—
—
14
14
mA
mA
—
—
IEE
5.5
AC ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 5.5V; VEE = –4.2V to –5.5V
TA = –40°C TA = 0°C
TA = +25°C TA = +85°C
Symbol
Parameter
Min. Max. Min. Max. Min. Max. Min. Max. Unit
Condition
tPLH
tPHL
Propagation Delay
D to Output Q
1.7
3.6
1.7
3.6
1.7
3.6
1.7
3.6
ns
CL = 20pF
fMAX
Maximum Frequency
150
—
150
—
150
—
150
—
MHz
ns
CL = 20pF
CL = 20pF
tr
tf
Output Rise/Fall Time
(1.0V to 2.0V)
—
1.5
—
1.5
—
1.5
—
1.5
TTL DC ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 5.5V; VEE = –4.2V to –5.5V
TA = –40°C TA = 0°C
TA = +25°C TA = +85°C
Symbol
VOH
Parameter
Min. Max. Min. Max. Min. Max. Min. Max. Unit
Condition
IOH = –3.0mA
IOL = 24mA
VOUT = 0V
Output HIGH Voltage
Output LOW Voltage
Output Short Circuit Current
2.4
—
2.4
—
2.4
—
2.4
—
V
V
VOL
—
0.5
—
0.5
—
0.5
—
0.5
IOS
–60 –200 –60 –200 –60 –200 –60 –200 mA
2
Micrel
SY100ELT25
ECL DC ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 5.5V; VEE = –4.2V to –5.5V
TA = –40°C
Min. Typ. Max.
TA = 0°C
TA = +25°C
TA = +85°C
Min. Typ. Max. Unit
Symbol
IIH
Parameter
Min. Typ. Max.
Min. Typ. Max.
Input HIGH Current
Input HIGH Current
Common Mode Range
—
0.5
—
—
—
—
150
—
—
—
—
—
150
—
—
—
—
—
150
—
—
—
—
—
150
—
µA
µA
V
IIL
—
0.5
—
0.5
—
0.5
VCMR
VPP
VEE+2.2
200
GND VEE+2.2
GND VEE+2.2
GND VEE+2.2
GND
—
Minimum Peak-to-Peak
Input(1)
—
200
—
200
—
200
mV
VIH
VIL
Input HIGH Voltage
Input LOW Voltage
Reference Output
–1165
–1810
–1.38
—
—
—
–880 –1165
–1475 –1810
–1.26 –1.38
—
—
—
–880 –1165
–1475 –1810
–1.26 –1.38
—
—
—
–880 –1165
–1475 –1810
–1.26 –1.38
—
—
—
–880 mV
–1475 mV
–1.26 mV
VBB
NOTE:
1. 200mV input guarantees full logic at output.
TTL SWITCHING CIRCUIT
VEE
VCC
Use 0.1µF Capacitors
For Decoupling
50Ω COAX
IN
OUT
DEVICE
UNDER
TEST
PULSE
GENERATOR
450Ω
50Ω COAX
50Ω COAX
CH A
CH B
Use Oscilloscope Internal
50Ω Load For Termination
OSCILLOSCOPE
3
Micrel
SY100ELT25
ECL/TTL PROPAGATION DELAY — SINGLE ENDED
50%
VIN
tPLH
t
PHL
1.5V
V
OUT
ECL/TTL WAVEFORMS: RISE AND FALL TIMES
2.0V
1V
V
OUT
tf
t
r
PRODUCT ORDERING CODE
Ordering
Code
Package
Type
Operating
Range
SY100ELT25ZC
Z8-1
Z8-1
Commercial
Commercial
SY100ELT25ZCTR
4
Micrel
SY100ELT25
8 LEAD SOIC .150" WIDE (Z8-1)
Rev. 03
MICREL-SYNERGY 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA
TEL + 1 (408) 980-9191 FAX + 1 (408) 914-7878 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
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
5
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