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SY58029U_07 Datasheet(Fiches technique) 2 Page - Micrel Semiconductor

Numéro de pièce SY58029U_07
Description  ULTRA PRECISION DIFFERENTIAL LVPECL 4:1 MUX with 1:2 FANOUT and INTERNAL TERMINATION
Télécharger  11 Pages
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Fabricant  MICREL [Micrel Semiconductor]
Site Internet  http://www.micrel.com
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2
Precision Edge®
SY58029U
Micrel, Inc.
M9999-020207
hbwhelp@micrel.com or (408) 955-1690
PACKAGE/ORDERING INFORMATION
24
23
22
21
20
19
18
17
GND
VCC
Q1
/Q1
VCC
NC
SEL1
VCC
IN0
VT0
VREF-AC0
/IN0
IN1
VT1
VREF-AC1
/IN1
1
2
3
4
5
6
7
8
910 11 12 13 14 15 16
32 31 30 29 28 27 26 25
32-Pin MLF® (MLF-32)
Pin Number
Pin Name
Pin Function
1, 4
IN0, /IN0
Differential Input: Each pair accepts AC- or DC-coupled signals as small as 100mV.
5, 8
IN1, /IN1
Each pin of a pair internally terminates to a VT pin through 50Ω. Note that these
25, 28
IN2, /IN2
inputs will default to an indeterminate state if left open. If an input is not used, connect one
29, 32
IN3, /IN3
end of the differential pairs to ground through a 1k
Ω resistor, and leave the other end to
VCC through a 825Ω resistor. Unused VT and VREF-AC pins may also be left floating.
Please refer to the “Input Interface Applications” section for more details.
2, 6, 26, 30
VT0, VT1
Input Termination Center-Tap: Each side of the differential input pair terminates to a VT
VT2, VT3
pin. The VT pin provides a center-tap to the termination network for maximum
interface flexibility. See “Input Interface Applications” section for more details.
15, 18
SEL0, SEL1
This Single-Ended TTL/CMOS compatible input selects the inputs to the multiplexer. Note
that this input is internally connected to a 25k
Ω pull-up resistor and will default to a logic
HIGH state if left open. Input logic threshold is VCC/2. See “Truth Table” for select control.
14, 19
NC
No Connect.
10, 13, 16
VCC
Positive Power Supply: Bypass with 0.1
µF0.01µF low ESR capacitors.
17, 20, 23
11, 12
/Q0, Q0
Differential Outputs: These 100k compatible (internally temperature compensated)
21, 22
/Q1, Q1
LVPECL output pairs are copies of the selected input. Unused output pins may be left
floating. See “Output Interface” for terminating guidelines.
9, 24
GND,
Ground. Ground pin and exposed pad must be connected to the same ground plane.
Exposed Pad
3, 7, 27, 31
VREF-AC0
Reference Voltage: This reference output is equivalent to VCC–1.4V. It is used for
VREF-AC1
AC-coupled inputs. When interfacing to AC input signals, connect VREF-AC directly to the
VREF-AC2
VT pin and bypass with 0.01µF low ESR capacitor to VCC. See “Input Interface Applica-
VREF-AC3
tions” section. Maximum sink/source current is 0.5mA.
PIN DESCRIPTION
TRUTH TABLE
SEL1
SEL0
0
0
IN0 Input Selected
0
1
IN1 Input Selected
1
0
IN2 Input Selected
1
1
IN3 Input Selected
Ordering Information(1)
Package
Operating
Package
Lead
Part Number
Type
Range
Marking
Finish
SY58029UMI
MLF-32
Industrial
SY58029U
Sn-Pb
SY58029UMITR(2)
MLF-32
Industrial
SY58029U
Sn-Pb
SY58029UMG(3)
MLF-32
Industrial
SY58029U with
Pb-Free
Pb-Free bar-line indicator
NiPdAu
SY58029UMGTR(2, 3)
MLF-32
Industrial
SY58029U with
Pb-Free
Pb-Free bar-line indicator
NiPdAu
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A = 25°C, DC electricals only.
2. Tape and Reel.
3. Pb-Free package recommended for new designs.




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