74CBTLV3251PGG

INDUSTRIAL TEMPERATURE RANGE
IDT74CBTLV3251
LOW-VOLTAGE 8:1 MULTIPLEXER/DEMULTIPLEXER
1
DECEMBER 2014INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
© 2014 Integrated Device Technology, Inc. DSC-5403/6
FUNCTIONAL BLOCK DIAGRAM
FEATURES:
Functionally equivalent to QS3251
•5
ΩΩ
ΩΩ
Ω bi-directional switch connection between two ports
Isolation under power-off conditions
Over-voltage tolerant
Latch-up performance exceeds 100mA
•V
CC = 2.3V - 3.6V, Normal Range
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
Available in QSOP and TSSOP packages
IDT74CBTLV3251
LOW-VOLTAGE
8:1 MULTIPLEXER/
DEMULTIPLEXER
A
B2
B6
B1
B5
B3
B4
B7
B8
SW
SW
SW
SW
SW
SW
SW
SW
4
3
12
13
S0
S1
S2
OE
11
10
9
7
5
2
1
15
14
DESCRIPTION:
The CBTLV3251 is a 1-of-8 high-speed multiplexer/demultiplexer. The
low on-state resistance of the switch allows connections to be made with
minimal propagation delay.
The select input (S0, S1, S2) controls the data flow. The multiplexer/
demultiplexer switches are disabled when the output-enable (OE) input is
high.
To ensure that the device is in high-impedance state during power up or
power down, OE should be tied to VCC through a pullup resistor; the minimum
value of the resistor is determined by the current-sinking capability of the
driver.
INDUSTRIAL TEMPERATURE RANGE
2
IDT74CBTLV3251
LOW-VOLTAGE 8:1 MULTIPLEXER/DEMULTIPLEXER
PIN CONFIGURATION
QSOP / TSSOP
TOP VIEW
Symbol Parameter Test Conditions Min. Max. Unit
VCC Supply Voltage 2.3 3.6 V
V
IH High-Level Control Input Voltage VCC = 2.3V to 2.7V 1.7 V
VCC = 2.7V to 3.6V 2
VIL Low-Level Control Input Voltage VCC = 2.3V to 2.7V 0.7 V
VCC = 2.7V to 3.6V 0.8
T
A Operating Free-Air Temperature 40 85 ° C
OPERATING CHARACTERISTICS, TA = 25°C
(1)
NOTE:
1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation.
Symbol Description Max Unit
VCC SupplyVoltage Range –0.5 to +4.6 V
VI Input Voltage Range –0.5 to +4.6 V
Continuous Channel Current 128 mA
IIK Input Clamp Current, VI/O < 0 50 mA
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.
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Inputs
OE S2 S1 S0 Function
L L L L A Port = B1 Port
L L L H A Port = B2 Port
L L H L A Port = B3 Port
L L H H A Port = B4 Port
L H L L A Port = B5 Port
L H L H A Port = B6 Port
L H H L A Port = B7 Port
L H H H A Port = B8 Port
H X X X Disconnect
FUNCTION TABLE
(1)
VCC
B4
B6
B2
B7
B1
B8
A
S0
NC
S1
OE
B3
B5
GND
S2
161
314
413
512
6
11
7
10
2
15
9
8
SIMPLIFIED SCHEMATIC, EACH
SWITCH
CONTROL
CIRCUITRY
A
B
INDUSTRIAL TEMPERATURE RANGE
IDT74CBTLV3251
LOW-VOLTAGE 8:1 MULTIPLEXER/DEMULTIPLEXER
3
Symbol Parameter Test Conditions Min. Typ.
(1)
Max. Unit
VIK Control Inputs, Data Inputs VCC = 3V, II = –18mA –1.2 V
II Control Inputs VCC = 3.6V, VI = VCC or GND ±1 μA
IOZ Data I/O VCC = 3.6V, VO = 0 or 3.6V, switch disabled 5 μA
IOFF VCC = 0, VI or VO = 0 to 3.6V 50 μA
ICC VCC = 3.6V, IO = 0, VI = VCC or GND 10 μA
ΔICC
(2)
Control Inputs VCC = 3.6V, one input at 3V, other inputs at VCC or GND 300 μA
CI Control Inputs VI = 3V or 0 4 pF
C
IO(OFF) A Port VO = 3V or 0, OE = VCC = 3.3V 40.5 pF
B Port —6
VCC = 2.3V VI = 0 IO = 64mA 5 8
Typ. at V
CC = 2.5V IO = 24mA 5 8
R
ON
(3)
VI = 1.7V IO = 15mA 27 40 Ω
VI = 0 IO = 64mA 5 7
VCC = 3V IO = 24mA 5 7
VI = 2.4V IO = 15mA 10 15
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Conditions: TA = –40°C to +85°C
VCC = 2.5V ± 0.2V VCC = 3.3V ± 0.3V
Symbol Parameter Min. Max. Min. Max. Unit
t
PD
(1)
Propagation Delay 0.15 0.25 ns
A to B or B to A
t
SEL Select Time 1 4.8 1 4.5 ns
S to A or B
tEN Enable Time 1 4.8 1 4.5 ns
S to B
t
DIS Disable Time 1 5.1 1 5.3 ns
S to B
t
EN Output Enable Time 1 5 1 4.8 ns
OE to A or B
t
DIS Output Disable Time 1 5.5 1 6 ns
OE to A or B
NOTE:
1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance driven by an ideal voltage source
(zero output impedance).
SWITCHING CHARACTERISTICS
NOTES:
1. Typical values are at VCC = 3.3V, +25°C ambient.
2. The increase in supply current is attributable to each current that is at the specified voltage level rather than VCC or GND.
3. This is measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by the lower of the voltages
of the two (A or B ) terminals.

74CBTLV3251PGG

Mfr. #:
Manufacturer:
IDT
Description:
Multiplexer Switch ICs Low-Voltage 8:1 Mux /Demultiplexer
Lifecycle:
New from this manufacturer.
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