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QS33X257Q1G8

P1-P3P4-P5
1
IDTQS33X257
HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
AUGUST 2012
2012 Integrated Device Technology, Inc. DSC-5763/3c
IDTQS33X257
INDUSTRIAL TEMPERATURE RANGE
FUNCTIONAL BLOCK DIAGRAM
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEATURES:
• Enhanced N channel FET with no inherent diode to Vcc
• Bidirectional signal flow
• 24:12 Mux/Demux switches connect inputs to outputs
• Individual controls for each bank
• Zero propagation delay, zero ground bounce
• Undershoot clamp diodes on all switch and control inputs
• TTL-compatible control inputs
• Available in 48-pin QVSOP package
APPLICATIONS:
• Logic replacement
• Video, audio, graphics switching, muxing
• Hot-swapping, hot-docking
• Voltage translation (5V to 3.3V)
• Bus funneling
QUICKSWITCH
®
PRODUCTS
HIGH-SPEED CMOS
QUICKSWITCH 24:12 MUX/DEMUX
S
0
E
0
Y
A
I0
A
I1
A
I0
B
I1
B
I0
C
I1
C
I0
D
I1
D
Y
B
Y
C
Y
D
S
1
E
1
Y
E
I0
E
I1
E
I0
F
I1
F
I0
G
I1
G
I0
H
I1
H
Y
F
Y
G
Y
H
S
2
E
2
Y
I
I0
I
I1
I
I0
J
I1
J
I0
K
I1
K
I0
L
I1
L
Y
J
Y
K
Y
L
DESCRIPTION:
The QS33X257 is a high-speed CMOS TTL-compatible 24:12 multi-
plexer/demultiplexer. The QS33X257 is functionally compatible to three of
the QuickSwitch version of the 74F257, 74FCT257, and the 74ALS/AS/
LS257 Quad 2:1 multiplexers. The low ON resistance of the QS33X257
allows inputs to be connected to outputs without adding propagation delay
and without generating additional ground bounce noise. This part will be
used in wide bus multiplexing where board space is at a premium.
Mux/Demux devices provide an order of magnitude faster speed than
equivalent logic devices.
The QS33X257 is characterized for operation at -40°C to +85°C.
2
INDUSTRIAL TEMPERATURE RANGE
IDTQS33X257
HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
PIN CONFIGURATION
Symbol Description Max Unit
VTERM
(2)
Supply Voltage to Ground –0.5 to +7 V
VTERM
(3)
DC Switch Voltage Vs –0.5 to +7 V
VTERM
(3)
DC Input Voltage VIN –0.5 to +7 V
VAC AC Input Voltage (pulse width ≤ 20ns) –3 V
IOUT DC Output Current Max. Sink Current/Pin 120 mA
PMAX Maximum Power Dissipation 0.5 W
T
STG Storage Temperature –65 to +150 °C
ABSOLUTE MAXIMUM RATINGS
(1)
NOTE:
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. Vcc terminals.
3. All terminals except Vcc.
QVSOP
TOP VIEW
CAPACITANCE
(TA = +25°C, f = 1.0MHZ, VIN = 0V, VOUT = 0V)
NOTE:
1. This parameter is measured at characterization but not tested.
Pins Typ. Max.
(1)
Unit
Control Pins 4 5 pF
Quickswitch Channels Demux 5 7 pF
(Switch OFF) Mux 9 10
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
V
CC
E0
I0
D
I1
D
Y
D
I0
C
I1
C
Y
C
E1
I0
H
I1
H
Y
H
I0
G
I1
G
Y
G
E2
I0
L
I1
L
Y
L
I0
K
I1
K
Y
K
V
CC
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
S
0
I0
A
I1
A
Y
A
I0
B
I1
B
Y
B
GND
S
1
I0
E
I1
E
Y
E
I0
F
I1
F
Y
F
GND
S
2
I0
I
I1
I
Y
I
I0
J
I1
J
Y
J
GND
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedance
FUNCTION TABLE
(1)
Enable Outputs
Ex Sx YA YB YC YD Function
H X Z Z Z Z Disable
LLI0A I0B I0C I0X Select 0
LHI
1A I1B I1C I1X Select 1
PIN DESCRIPTION
Pin Names I/O Description
I x x I/O Data Inputs
S x I Select Input
Ex I/O Enable Input
Y x I/O Data Outputs
3
IDTQS33X257
HIGH-SPEED CMOS QUICKSWITCH 24:12 MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
RON
(ohms)
VIN
(Volts)
TYPICAL ON RESISTANCE vs VIN AT VCC = 5V
Symbol Parameter Test Conditions Min. Typ.
(1)
Max. Unit
VIH Input HIGH Level Guaranteed Logic HIGH for Control Pins 2 — — V
VIL Input LOW Level Guaranteed Logic LOW for Control Pins — — 0.8 V
IIN Input LeakageCurrent (Control Inputs) 0V ≤ VIN ≤ VCC —— ±1 μA
IOZ Off-State Output Current (Hi-Z) 0V ≤ VOUT ≤ VCC —— ±1 μA
R
ON Switch ON Resistance VCC = Min., VIN = 0V, ION = 30mA — 5 7 Ω
VCC = Min., VIN = 2.4V, ION =15mA — 10 15
VP Pass Voltage
(2)
VIN = VCC = 5V, IOUT = -5μA 3.7 4 4.2 V
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ±5%
NOTES:
1. Typical values are at V
CC = 5.0V, TA = 25°C.
2. Pass Voltage is guaranteed but not production tested.
16
14
12
10
8
6
4
2
0
0.0 0.5
1.0
1.5 2.0 2.5 3.0 3.5
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QS33X257Q1G8

Mfr. #:
Buy QS33X257Q1G8
Manufacturer:
IDT
Description:
Encoders, Decoders, Multiplexers & Demultiplexers 4X2:1 MUX-DEMUX, QSW MW
Lifecycle:
New from this manufacturer.
Delivery:
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