IDT IDT74CBTLV3251PG

IDT74CBTLV3251
LOW-VOLTAGE 8:1 MULTIPLEXER/DEMULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
LOW-VOLTAGE
8:1 MULTIPLEXER/
DEMULTIPLEXER
IDT74CBTLV3251
FEATURES:
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.
−
Functionally equivalent to QS3251
5Ω Switch Connection between Two Ports
Isolation Under Power-Off Conditions
Over-voltage tolerant
Latch-up performance exceeds 100ma
VCC = 2.3V - 3.6V, normal range
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
Available in SSOP, QSOP, and TSSOP packages
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.
FUNCTIONAL BLOCK DIAGRAM
5
A
4
SW
3
SW
2
SW
1
SW
15
SW
14
SW
13
SW
SW
S0
S1
S2
OE
12
B1
B2
B3
B4
B5
B6
B7
B8
11
10
9
7
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
APRIL 2001
1
c
2001 Integrated Device Technology, Inc.
DSC-5403/-
IDT74CBTLV3251
LOW-VOLTAGE 8:1 MULTIPLEXER/DEMULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS (1)
Symbol
VCC
Description
Supply Voltage Range
Max.
–0.5 to 4.6
Unit
V
VI
Input Voltage Range
–0.5 to 4.6
V
B4
1
16
V CC
B3
2
15
B5
Continuous Channel Current
128
mA
B2
3
14
B6
IIK
Input Clamp Current, VI/O < 0
–50
mA
B1
4
B7
TSTG
Storage Temperature
–65 to +150
°C
A
5
SO16-7 13
SO16-9
12
SO16-10
NC
6
11
S0
OE
7
10
S1
GND
8
9
S2
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.
B8
QSOP/ SSOP/ TSSOP
TOP VIEW
FUNCTION TABLE (1)
Inputs
SIMPLIFIED SCHEMATIC, EACH
SWITCH
A
B
OE
L
S2
L
S1
L
S0
L
Function
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
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
CO NTRO L
CIR CUITRY
OPERATING CHARACTERISTICS (1)
Symbol
VCC
Supply Voltage
VIH
High-Level Control Input Voltage
VIL
Low-Level Control Input Voltage
TA
Parameter
Test Conditions
VCC = 2.3V to 2.7V
Min.
2.3
Max.
3.6
Unit
1.7
—
V
VCC = 2.7V to 3.6V
2
—
VCC = 2.3V to 2.7V
—
0.7
VCC = 2.7V to 3.6V
—
0.8
−40
+85
Operating Free-Air Temperature
NOTE:
1. All unused control inputs of the device must be held at VCC or GND to ensure proper operation.
2
V
V
°C
IDT74CBTLV3251
LOW-VOLTAGE 8:1 MULTIPLEXER/DEMULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = – 40°C to +85°C
Min.
—
Typ. (1)
—
Max.
– 1.2
Unit
V
VCC = 3.6V, VI = VCC or GND
—
—
±1
µA
VCC = 3.6V, VO = 0 or 3.6V, switch disabled
—
—
20
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
Symbol
VIK
Parameter
Control Inputs, Data I/O
Test Conditions
VCC = 3V, II = −18mA
II
Control Inputs, Data I/O
IOZ
Data I/O
∆ICC (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
CIO(OFF)
A port
VO = 3V or 0, OE = VCC = 3.3V
—
40.5
—
pF
—
6
—
IO = 64mA
—
5
8
B port
Max at VCC = 2.3V
VI = 0
Typ at VCC = 2.5V
RON (3)
IO = 24ma
—
5
8
VI = 1.7V
IO = 15mA
—
27
40
VI = 0
IO = 64mA
—
5
7
IO = 24mA
—
5
7
IO = 15mA
—
10
15
VCC = 3V
VI = 2.4V
Ω
NOTES:
1. Typical values are at VCC = 3.3V, +25°C ambient.
2. The increase in supply current is attributable to each output 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.
SWITCHING CHARACTERISTICS
VCC = 2.5V ± 0.2V
Symbol
tPD(1)
tSEL
tEN
tDIS
tEN
tDIS
Parameter
Propagation Delay
A to B or B to A
Select Time
S to A or B
Enable Time
S to B
Disable Time
S to B
Enable Time
OE to A or B
Disable Time
OE to A or B
VCC = 3.3V ± 0.3V
Min.
−
Max.
0.15
Min.
−
Max.
0.25
Unit
ns
1
4.8
1
4.5
ns
1
4.8
1
4.5
ns
1
5.1
1
5.3
ns
1
5
1
4.8
ns
1
5.5
1
6
ns
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 when
driven by an ideal voltage source (zero output impedance).
3
IDT74CBTLV3251
LOW-VOLTAGE 8:1 MULTIPLEXER/DEMULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
PROPAGATION DELAY/ SELECT TIME
TEST CONDITIONS
VCC(1)= 3.3V ± 0.3V
6
Symbol
VLOAD
VCC(2)= 2.5V ± 0.2V
2 x Vcc
Unit
V
VIH
3
Vcc
V
VT
1.5
VCC/2
V
VLZ
300
150
mV
VHZ
300
150
mV
CL
50
30
pF
SAME PHASE
INPUT TRANSITION
DISABLE
CONTROL
INPUT
GND
t PZL
V OUT
D.U.T.
OUTPUT
SW ITCH
NORMALLY
CLOSE D
LOW
tP ZH
OUTPUT SW ITCH
NORMALLY
OPEN
HIGH
500 Ω
CL
DEFINITIONS:
NOTE:
CL = Load capacitance: includes jig and load capacitance.
RT = Termination resistance: should be equal to ZOUT of the pulse
generator.
1.
NOTES:
1.
2.
V IH
VT
0V
ENABLE
500 Ω
RT
tPHL
Pulse Generator for all pulses: Rate ≤ 10MHz; tF ≤ 2.5ns, tR ≤ 2.5ns
Pulse Generator for all pulses: Rate ≤ 10MHz; tF ≤ 2ns, tR ≤ 2ns
SWITCH POSITION
Test
tPLZ / tPZL
Switch
VLOAD
tPHZ / tPZH
GND
tPD
Open
tSEL
Open
V OH
VT
VOL
ENABLE AND DISABLE TIMES
Open
Pulse
Generator
tPLH
V LOAD
V CC
V IN
tPHL
OPPOSITE PHASE
INPUT TRANSITION
TEST CIRCUITS FOR ALL OUTPUTS
(1, 2)
t PLH
OUTPUT
V IH
VT
0V
4
tPLZ
V IH
VT
0V
V LOAD /2
V LOAD /2
VT
V OL + V LZ
V OL
t PHZ
VT
V OH
V OH -V HZ
0V
0V
Diagram shown for Input Control Enable-LOW and Input Control
Disable-HIGH.
IDT74CBTLV3251
LOW-VOLTAGE 8:1 MULTIPLEXER/DEMULTIPLEXER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT
XX
Temp. Range
XXX
XX
Device Type
Package
CBTLV
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
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3251
Low-Voltage 1-of-8 M ultiplexer/Demultiplexer
74
–40°C to +85°C
for SALES:
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
5
for Tech Support:
[email protected]
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