1
IDTQS4A210
HIGH-PERFORMANCE CMOS TWO-CHANNEL SP4T MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
AUGUST 2000
2000 Integrated Device Technology, Inc.
DSC-5550/1
c
INDUSTRIAL TEMPERATURE RANGE
FEATURES:
Low ON resistance: r
DS
(
ON
) = 5
Fast transition time: t
TRAN
= 6ns
Wide bandwidth: 700MHz (-3dB point)
Crosstalk: -110dB at 50KHz, -68dB at 5MHz, -66dB at 30MHz
Off-isolation: -90dB at 50KHz, -60dB at 5MHz, -50dB at 30MHz
Single 5V supply
Can be used as multiplexer or demultiplexer
TTL-compatible control inputs
Ultra-low quiescent current: 3
A
Available in QSOP package
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
APPLICATIONS:
High-speed video signal switching/routing
HDTV-quality video signal multiplexing
Audio signal switching/routing
Data acquisition
ATE systems
Telecomm routing
Switch between multiple video sources
Token Ring transceivers
High-speed networking
FUNCTIONAL BLOCK DIAGRAM
IDTQS4A210
DESCRIPTION:
The QS4A210 is a high-performance CMOS two-channel SP4T multi-
plexer/demultiplexer with individual enables. The low On-resistance of the
QS4A210 allows inputs to be connected to outputs with low insertion loss and
high bandwidth. TTL-compatible control circuitry with "Break-Before-Make"
feature prevents contention.
The QS4A210 with 700MHz bandwidth makes it ideal for high-perfor-
mance video signal switching, audio signal switching, and telecom routing
applications. Low power dissipation makes this device ideal for battery
operated and remote instrumentation applications.
The QS4A210 is offered in the QSOP package which has several
advantages over conventional packages such as PDIP and SOIC, includ-
ing:
Reduced signal delays due to denser component packaging on circuit
boards
Reduced system noise due to less pin inductance, resulting in lower
ground bounce
The QS4A210 is characterized for operation at -40C to +85C.
QUICKSWITCH
PRODUCTS
HIGH-PERFORMANCE CMOS
TWO CHANNEL SP4T MUX/DEMUX
CO NTRO L
LO G IC
Y B
I3B
I2B
I1B
I0B
S0
I3A
I2A
I1A
I0A
Y A
S1
E A
E B
2
INDUSTRIAL TEMPERATURE RANGE
IDTQS4A210
HIGH-PERFORMANCE CMOS TWO-CHANNEL SP4T MUX/DEMUX
PIN CONFIGURATION
QSOP
TOP VIEW
Symbol
Description
Max
Unit
V
TERM
(2)
Supply Voltage to Ground
0.5 to +7
V
V
TERM
(3)
DC Switch Voltage V
S
0.5 to +7
V
--
Analog Input Voltage
0.5 to +7
V
V
TERM
(3)
DC Input Voltage V
IN
0.5 to +7
V
V
AC
AC Input Voltage (pulse width
20ns)
3
V
I
OUT
DC Output Current
120
mA
P
MAX
Maximum Power Dissipation
0.7
W
T
STG
Storage Temperature
65 to +150
C
ABSOLUTE MAXIMUM RATINGS
(1)
Pin Names
I/O
Description
IxA
I/O
Demux Port A
IxB
I/O
Demux Port B
EA, EB
I
Enable Inputs
S
0
, S
1
I
Select Inputs
YA, YB
I/O
Mux Port A, B
PIN DESCRIPTION
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. V
CC
terminals.
3. All terminals except V
CC
.
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedance
Enable
Select
Mux/Demux
Ports
EA
EB
S
1
S
0
YA
YB
Function
H
X
X
X
Z
X
Disable A
X
H
X
X
X
Z
Disable B
L
L
L
L
1
0
A
1
0
B
S
1
- 0 = 0
L
L
L
H
1
1
A
1
1
B
S
1
- 0 = 1
L
L
H
L
1
2
A
1
2
B
S
1
- 0 = 2
L
L
H
H
1
3
A
1
3
B
S
1
- 0 = 3
FUNCTION TABLE
(1)
16
15
14
13
12
11
10
9
EA
S1
I3A
I2A
I1A
I0A
YA
GND
V
CC
EB
S0
I3B
I2B
I1B
I0B
YB
1
2
3
4
5
6
7
8
3
IDTQS4A210
HIGH-PERFORMANCE CMOS TWO-CHANNEL SP4T MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= 40C to +85C, V
CC
= 5V 5%
Symbol
Parameter
Test Conditions
Min.
Typ.
(1)
Max.
Unit
Analog Switch
V
IN
Analog Signal Range
(2)
0.5
1
Vcc - 1
V
r
DS
(
ON
)
Drain-source ON resistance
(2,3)
Vcc = Min., V
IN
= 0V
, I
ON
= 30mA
--
5
7
Vcc = Min., V
IN
= 2.4V
, I
ON
= 15mA
--
13
17
I
C(OFF)
Channel Off Leakage Current
I
N
= Vcc or 0V; Y
N
= 0V or Vcc; EA = EB = Vcc
--
2
--
nA
I
C(ON)
Channel On Leakage Current
I
N
= Y
N
= 0V
--
2
--
nA
(each channel is turned on sequentially)
Digital Control
V
IH
Input HIGH Voltage
Guaranteed Logic HIGH for Control Pins
2
--
--
V
V
IL
Input LOW Voltage
Guaranteed Logic LOW for Control Pins
--
--
0.8
V
Dynamic Characteristics
t
TRANS
Switching Time of Mux
R
L
= 1K
, C
L
= 100pF
0.5
--
6.6
ns
Sx to Y
(See Transition Time)
t
ON(EN)
Enable Turn-On Time
R
L
= 1K
, C
L
= 100pF
0.5
--
6
ns
EA = EB to Y
(See Switching Time)
t
OFF(EN)
Enable Turn-Off Time
R
L
= 1K
, C
L
= 100pF
0.5
--
6
ns
EA = EB to Y
(See Switching Time)
t
PD
Group Delay
(2,4)
R
L
= 1K
, C
L
= 100pF
--
--
250
ps
f
3dB
-3dB Bandwidth
V
IN
= 1Vp-p, R
L
= 75
--
700
--
MHz
Off-isolation
V
IN
= 1Vp-p, R
L
= 75
, f = 5.5MHz
--
-60
--
dB
X
TALK
Crosstalk
V
IN
= 1Vp-p, R
L
= 75
, f = 5.5MHz
--
-68
--
dB
C
MUX(OFF)
Mux Off Capacitance
EA = EB = Vcc, V
IN
= V
OUT
= 0V
--
5.6
--
pF
C
DEMUX(OFF)
Demux Off Capacitance
EA = EB = Vcc, V
IN
= V
OUT
= 0V
--
7.4
--
pF
C
MUX(ON)
Mux On Capacitance
EA = EB = 0V, V
IN
= V
OUT
= 0V
--
12
--
pF
C
DEMUX(ON)
Demux On Capacitance
EA = EB = 0V, V
IN
= V
OUT
= 0V
--
15
--
pF
Q
CI
Charge Injection
--
1.5
--
pC
NOTES:
1. Typical values are at V
CC
= 5.0V, T
A
= 25C.
2. Max value is guaranteed but not production tested.
3. Measured by voltage drop between A and C pins or B and D pins at indicated current through the switch. ON resistance is determined by the lower of the voltages on the
two (I, Y) pins.
4. The bus switch contributes no group delay other than the RC delay of the ON resistance of the switch and load capacitance. Group delay of the bus switch, when used
in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions
Max.
Unit
I
CCQ
Quiescent Power
V
CC
= Max., V
IN
= GND or V
CC
, f = 0
3
A
4
INDUSTRIAL TEMPERATURE RANGE
IDTQS4A210
HIGH-PERFORMANCE CMOS TWO-CHANNEL SP4T MUX/DEMUX
TYPICAL CHARACTERISTICS
NOTES:
1. Crosstalk = 20 log |V
O
/V
S
|
2. Off-isolation = 20 log |V
O
/V
S
|
NOTES:
1. Crosstalk = 20 log |V
O
/V
S
|
2. Off-isolation = 20 log |V
O
/V
S
|
NOTES:
1. Crosstalk = 20 log |V
O
/V
S
|
2. Off-isolation = 20 log |V
O
/V
S
|
NOTE:
1. Insertion Loss = 20 log |V
O
/V
S
|
Off-isolation and Crosstalk vs. Frequency
Off-isolation and Crosstalk vs. Frequency
Off-isolation and Crosstalk vs. Frequency
Insertion Loss vs. Frequency
1K
10K
100K
Frequency (Hz)
(
d
B
)
1M
10M
100M
1G
Crosstalk
Off-isolation
150
120
90
60
30
0
V
CC
= 5V
R
L
= 75
100M
200M
300M
Frequ ency (H z)
(
d
B
)
400M
500M
600M
700M
Crosstalk
O ff-isolation
60
50
40
30
20
10
0
V
CC
= 5V
R
L
= 75
160
140
120
100
80
60
40
V
CC
= 5V
R
L
= 75
10K
20K
30K
Frequency (H z)
(
d
B
)
40K
50K
60K
70K
Crosstalk
O ff-isolation
4
2
0
2
4
6
R
L
= 1K
R
L
= 75
V
CC
= 5V
1K
10K
100K
Frequency (H z)
(
d
B
)
1M
10M
100M
1G
5
IDTQS4A210
HIGH-PERFORMANCE CMOS TWO-CHANNEL SP4T MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
TYPICAL CHARACTERISTICS (CONTINUED)
Insertion Loss vs. Frequency
On-Resistance vs. V
IN
NOTE:
1. Insertion Loss = 20 log |V
O
/V
S
|
16
14
12
10
8
0.0
0.5
1.0
1.5
2.0
2.5
3.0
6
4
V
IN
(Volts)
r
D
S
(
O
n
)
-
D
r
a
i
n
S
o
u
r
c
e
O
n
-
r
e
s
i
s
t
a
n
c
e
(
)
V
CC
= 4.75V
18
R
ON
LINK
Transition Time
TEST CIRCUITS
1
2
4
6
2
1
0
1 0 0 M
2 0 0 M
3 0 0 M
F re q u e n c y (H z )
(
d
B
)
4 0 0 M
5 0 0 M
6 0 0 M
7 0 0 M
R
L
= 7 5
V
C C
= 5 V
R
L
= 1 K
t
TRANS
t
TRANS
3.0V
1.5V
0V
1.5V
SELECT
INPUT
I0A-I2A
I3A
I0B-I3B
YB
YA
5V
5V
V
OUT
V
IN
5V
50
500
50pF
0V
GND
QS4A210
EA
S0
S1
EB
SWITCH
OUTPUT
V
CC
6
INDUSTRIAL TEMPERATURE RANGE
IDTQS4A210
HIGH-PERFORMANCE CMOS TWO-CHANNEL SP4T MUX/DEMUX
Insertion Loss
NOTE:
1. Insertion Loss = 20 log |V
O
/V
S
|
Crosstalk
NOTE:
1. Crosstalk = 20 log |V
O
/V
S
|
Off-Isolation
NOTE:
1. Off-isolation = 20 log |V
O
/V
S
|
Enable Switching Time
TEST CIRCUITS (CONTINUED)
I1A-I3A
I0A
I0B-I3B
YB
YA
5V
5V
V
IN
5V
50
500
50pF
GND
QS4A210
S0
S1
EB
EA
3.0V
1.5V
0V
0.3V
0.3V
CONTROL
INPUT
OUTPUT
OUTPUT
V
OUT
V
CC
t
OFF(EN)
t
OFF(EN)
+5V
GND
QS4A210
EB
V
IN
I0A
IxA
IxB
S0
S1
EA
R
S
= 50
V
CC
Y
0
Y
A
R
L
75
+5V
+5V
GND
QS4A210
EB
IxA
IxB
S0
S1
EA
R
S
= 50
V
CC
Y
A
Y
0
R
L
75
+5V
GND
QS4A210
EA
V
S
I0A
S0
S1
EB
R
S
= 50
V
CC
R
L
75
Y
A
Y
0
7
IDTQS4A210
HIGH-PERFORMANCE CMOS TWO-CHANNEL SP4T MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
CORPORATE HEADQUARTERS
for SALES:
for Tech Support:
2975 Stender Way
800-345-7015 or 408-727-6116
logichelp@idt.com
Santa Clara, CA 95054
fax: 408-492-8674
(408) 654-6459
www.idt.com
IDTQS
XXXXX
XX
Package
Device Type
Quarter Size Outline Package
Q
4A210
High Performance CMOS Two Channel SP4T
Mux/Demux
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