sy58038u Micrel Semiconductor, sy58038u Datasheet - Page 3

• Manufacturer Part Number: sy58038u
• Description: Sy58038u Ultra Precision 8 1 Mux With Internal Termination And 1 2 Lvpecl Fanout Buffer
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
VREF-AC2
VREF-AC1
24, 27, 29, 32
PACKAGE/ORDERING INFORMATION
Pin Number
PIN DESCRIPTION
23, 28, 33
20, 18,
16, 14,
13, 11,
42, 40,
25, 26,
38, 36
19,15,
41, 37
30, 31
1, 43,
12, 8,
4, 44,
/IN4
VT4
/IN3
VT3
/IN2
9, 7,
5, 3,
IN5
IN4
IN3
NC
17,
10,
21,
22,
39
35
2
44-Pin MLF
11
10
1
2
3
4
5
6
7
8
9
12 13 14 15 16 17 18 19
44 43 42 41 40 39 38 37
Exposed Pad
VREF-AC0,
VREF-AC1,
VREF-AC2,
VREF-AC3
Pin Name
VT2, VT3,
VT4, VT5,
IN0, /IN0,
IN1, /IN1,
IN2, /IN2,
IN3, /IN3,
IN4, /IN4,
IN6, /IN6,
VT0, VT1
VT6, VT7
IN5,/IN5,
IN7, /IN7
Q0,/Q0,
Q1,/Q1
SEL0,
SEL1,
SEL2
GND,
®
VCC
(MLF-44)
36
20 21 22
35
34
Pin Function
Differential Inputs: These input pairs are the differential signal inputs to the device. Inputs accept
AC or DC-coupled signals as small as 100mV. Each pin of a pair internally terminates to a VT
pin through 50Ω. Note that these inputs will default to an indeterminate state if left open.
Please refer to the “Input Interface Applications” section for more details.
Input Termination Center-Tap: Each side of the differential input pair terminates to a VT pin.
The VT pins provide a center-tap to a termination network for maximum interface flexibility.
See “Input Interface Applications” section for more details. For a CML or LVDS inputs, the VT
pin is left floating.
Reference Voltage: This output biases to V
(IN, /IN). For AC-coupled applications, connect VREF_AC to the VT pin and bypass with a
0.01µF low ESR capacitor to V
The single-ended TTL/CMOS-compatible inputs select the inputs to the multiplexer. Note that
this input is internally connected to a 25kΩ pull-up resistor and will default to a logic HIGH state
if left open.
Positive Power Supply. Bypass with 0.1µF0.01µF low ESR capacitors as close to each VCC
pin.
Differential Outputs: These LVPECL output pairs are the outputs of the device. Unused output
pairs may be left open. Each output is designed to drive 800mV into 50Ω terminated to V
(or V
Ground. GND and exposed pad must both be connected to the most negative potential of chip
ground.
33
32
31
30
29
28
27
26
25
24
23
GND
VCC
/Q1
Q1
VCC
GND
VCC
/Q0
Q0
VCC
GND
CC
–1.2V if AC-coupled).
Ordering Information
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
2. Tape and Reel.
3. Pb-Free package recommended for new designs.
Part Number
SY58038UMI
SY58038UMITR
SY58038UMY
SY58038UMYTR
(3)
CC
3
(2)
(2, 3)
. See “Input Interface Applications” section for more details.
Package Operating
MLF-44
MLF-44
MLF-44
MLF-44
Type
CC
(1)
–1.2V. It is used when AC coupling the inputs
Industrial
Industrial
Industrial
Industrial
Range
Pb-Free bar-line indicator Matte-Sn
Pb-Free bar-line indicator Matte-Sn
SY58038U with
SY58038U with
A
SY58038U
SY58038U
= 25°C, DC electricals only.
Package
Marking
Precision Edge
SY58038U
CC
Pb-Free
Pb-Free
Finish
Sn-Pb
Sn-Pb
Lead
–2V.
®