SY89855UMG Micrel Inc, SY89855UMG Datasheet - Page 3

• Manufacturer Part Number: SY89855UMG
• Description: IC,ANALOG MUX,QUAD,2-CHANNEL,LLCC,32PIN,PLASTIC
• Manufacturer: Micrel Inc
• Type: Multiplexerr
• Series: SY89r

Specifications of SY89855UMG

• Circuit: 1 x 4:1
• Independent Circuits: 1
• Voltage Supply Source: Single Supply
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-MLF®, QFN
• Number Of Clock Inputs: 4
• Mode Of Operation: Differential
• Output Logic Level: LVPECL
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Package Type: MLF
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Signal Type: CML/LVDS/LVPECL
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output High, Low: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-2101-5; SY89855UMG

Micrel, Inc.
Ordering Information
Pin Configuration
Pin Description
August 2007
Pin Number
10, 13, 16
17, 20, 23
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
2. Tape and Reel.
25, 28
29, 32
26, 30
15, 18
14, 19
11, 12
21, 22
9, 24
Part Number
SY89855UMG
SY89855UMGTR
1, 4
5, 8
2, 6
27
31
3
7
Exposed Pad
SEL0, SEL1
VREF-AC0,
VREF-AC1,
VREF-AC2,
VREF-AC3
Pin Name
IN0, /IN0,
IN1, /IN1,
IN2, /IN2,
VT0, VT1
VT2, VT3
IN3, /IN3
/Q0, Q0
/Q1, Q1
GND,
(2)
VCC
NC
Package
QFN-32
QFN-32
(1)
Type
Pin Function
Differential Input: Each pair accepts 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. If an input is not used, connect one end of the
differential pairs to ground through a 1kΩ resistor, and leave the other end to VCC through
an 825Ω resistor. Unused VT and VREF-AC pins may also be left floating. 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 pin provides a center-tap to the termination network for maximum interface
flexibility. See “Input Interface Applications” section for more details.
This Single-Ended TTL/CMOS compatible input selects 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. Input logic threshold is V
Not connected.
Positive Power Supply: Bypass with 0.1µF||0.01µF low ESR capacitors placed as close as
possible to each VCC pin.
Differential Outputs: These 100K-compatible (internally temperature compensated)
LVPECL output pairs are copies of the selected input. Unused output pins may be left
floating. See “Output Interface” for terminating guidelines.
Ground: Ground pins and exposed pad must be connected to the most negative potential
of the chip.
Reference Voltage: This reference output is equivalent to V
coupled inputs. When interfacing to AC input signals, connect VREF-AC directly to the VT
pin and bypass with a 0.01µF low ESR capacitor to VCC. See “Input Interface
Applications” section. Maximum sink/source current is ± 1.5mA.
Operating
Industrial
Industrial
Range
32-Pin QFN
SY89855U with Pb-Free bar-line indicator
SY89855U with Pb-Free bar-line indicator
A
= 25ºC, DC Electricals only.
3
Package Marking
CC
/2. See “Truth Table” for select control.
[e-mail]
CC
–1.2V. It is used for AC-
NiPdAu Pb-Free
NiPdAu Pb-Free
Lead Finish
or [phone]
M9999-082907-C
SY89855U