MICREL SY100S325

LOW-POWER HEX
ECL-to-TTL
TRANSLATOR
Micrel, Inc.
DESCRIPTION
FEATURES
■ Max. propagation delay of 3.7ns
■ IEE min. of –37mA
■ TTL outputs
■ Extended supply voltage option:
VEE = –4.2V to –5.5V
■ 25% faster than National's 325
■ Differential inputs with built-in offset
■ Voltage and temperature compensation for improved
noise immunity
■ VBB output for single-ended use
■ Internal 75KΩ input pull-down resistors
■ Function and pinout compatible with Fairchild F100K
■ Available in 28-pin PLCC package
The SY100S325 are hex translators for converting
100K ECL logic levels to TTL logic levels. Inputs can be
used as inverting, non-inverting or differential receivers.
An internal reference voltage generator provides VBB for
single-ended operation or for use in Schmitt trigger
applications. All inputs have 75KΩ pull-down resistors.
The outputs will go LOW when the inputs are either open
or have the same potential.
When used in single-ended operation, the apparent
input threshold of the true inputs is 20mV to 40mV higher
(positive) than the threshold of the complementary inputs.
The VTTL and VEE power may be applied in either order.
PIN NAMES
BLOCK DIAGRAM
Pin
VBB
D0
D0
Q0
D1
D1
Q1
D2
D2
Q2
D3
D3
Q3
D4
D4
Q4
D5
D5
Q5
M9999-051607
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SY100S325
SY100S325
Function
D0–D5
Data Inputs
D0–D5
Inverting Data Inputs
Q0–Q5
Data Outputs
VEES
VEE Substrate
VTTL
TTL VCC Power Supply
VCCA
VCCO for ECL Outputs
Rev.: I
1
Amendment: /0
Issue Date: May 2007
Micrel, Inc.
SY100S325
Ordering Information
D5
D4
VEES
D5
Q4
Q5
Q3
PACKAGE/ORDERING INFORMATION
25 24 23 22 21 20 19
VTTL
26
18
VTTL
VCC
27
17
28
16
VCC
VCC
Q2
Q1
1
Top View
PLCC
J28-1
2
15
14
3
13
8
9
VEE
VBB
D2
Package
Type
Operating
Range
Package
Marking
Lead
Finish
SY100S325JC
J28-1
Commercial
SY100S325JC
Sn-Pb
SY100S325JCTR(1)
J28-1
Commercial
SY100S325JC
Sn-Pb
SY100S325JY(2)
J28-1
Industrial
SY100S325JY with
Pb-Free bar-line indicator
Matte-Tin
SY100S325JYTR(1, 2)
J28-1
Industrial
SY100S325JY with
Pb-Free bar-line indicator
Matte-Tin
10 11
D2
7
D1
D1
Q0
D0
6
VEES
12
5
D0
4
D4
D3
D3
VEES
Part Number
Notes:
1. Tape and Reel.
2. Pb-Free package is recommended for new designs.
28-Pin PLCC (J28-1)
M9999-051607
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Micrel, Inc.
SY100S325
DC ELECTRICAL CHARACTERISTICS
VEE = –4.2V to –4.8V unless otherwise specified, VCC =VCCA = GND, VTTL = +4.5V to +5.5V
Symbol
Parameter
Min.
Typ.
Max.
Unit
Condition
VOH
Output HIGH Voltage
2.5
—
—
V
IOH = –2.0mA
VIN = VIH (Max.)
VOL
Output LOW Voltage
—
—
0.5
V
IOL = 24mA
VIN = VIL (Min.)
VDIFF
Input Voltage Differential
150
—
—
mV
VCM
Common Mode Voltage
—
—
1.0
V
Permissible ±VCM with Respect to VBB
IIH
Input HIGH Current
—
—
350
µA
VIN = VIH (Max.), D0–D5 = VBB, D0–D5 = VIL (Min.)
IIL
Input LOW Current
0.5
—
—
µA
VIN = VIH (Min.), D0–D5 = VBB
IOS
Output Short Circuit Current
–150
–80
–60
mA
VOUT = GND
IEE
VEE Power Supply Current
–37
–24
–17
mA
D0–D5 = VBB
ITTL
VTTL Power Supply Current
—
42
65
mA
D0–D5 = VBB
VBB
Ouptut Reference Voltage
–1380
mV
IVBB = –2.1mA
VIH
Single-Ended Input HIGH
Voltage
–1165
—
–880
mV
Guaranteed HIGH Signal for All Inputs (with One
Tied to VBB)
VIL
Single-Ended Input LOW
Voltage
–1810
—
–1475
mV
Guaranteed LOW Signal for All Inputs (with One
Tied to VBB)
–1320 –1260
Required for Full Output Swing
AC ELECTRICAL CHARACTERISTICS
VEE = –4.2V to –5.5V unless otherwise specified, VCC = VCCA = GND, VTTL = +4.5V to +5.5V
Symbol
Parameter
Min.
Typ.
Max.
Unit
tPLH
tPHL
Propagation Delay
Data to Output
900
2100
2900
ps
CL = 15pF, Figure 2
tPLH
tPHL
Propagation Delay
Data to Output
900
3100
3700
ps
CL = 50pF, Figure 2
M9999-051607
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Condition
Micrel, Inc.
SY100S325
SWITCHING WAVEFORM
0.7 ± 0.1 ns
0.7 ± 0.1 ns
–0.95V
80%
50%
INPUT
20%
tPLH
–1.69V
tPHL
ATTENUATED
OUTPUT
50%
Figure 1. Propagation Delay
Note:
VEE = –4.2V to –5.5V unless otherwise specified, VCC = VCCA = GND
TEST CIRCUITS
VTTL
VBB
0.1µF
OPEN
450Ω
PULSE
GENERATOR
CL
VCC VEE
L1
SCOPE
CHAN A
RT
Figure 2. AC Test Circuit for 15pF Loading
Notes:
VCC = 0V, VEE = –4.5V, VTTL = +5V
L1 and L2 = equal length 50Ω impedance lines
RT = 50Ω terminator internal to scope
Decoupling 0.1µF from GND to VCC, VEE and VTTL
All unused outputs are loaded with 500Ω to GND
CL = Fixture and stray capacitance = 3pF
M9999-051607
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L2
SCOPE
CHAN B
RT
Micrel, Inc.
SY100S325
28-PIN PLCC (J28-1)
Rev. 03
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 data sheet 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.
© 2006 Micrel, Incorporated.
M9999-051607
[email protected] or (408) 955-1690
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