IDT IDT74CBTLV3126Q Low-voltage quadruple bus switch Datasheet

IDT74CBTLV3126
LOW-VOLTAGE QUADRUPLE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
LOW-VOLTAGE QUADRUPLE
BUS SWITCH
IDT74CBTLV3126
FEATURES
DESCRIPTION:
−
−
−
−
−
−
−
The CBTLV3126 features four independent switches. Each switch is
enabled when the associated output-enable (OE) input is high.
−
−
Pin-Out Compatible with Standard ‘126 Logic Products
5Ω A/B bi-directional switch
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)
Output Enable, Active High
Available in TSSOP and QSOP packages
To ensure the high-impedance state during power up or power down,
OE should be tied to GND through a pulldown resistor; the minimum value
of the resistor is determined by the current-sinking capability of the driver.
APPLICATIONS:
−
3.3V High Speed Bus Switching and Bus Isolation
SIMPLIFIED SCHEMATIC, EACH
SWITCH
FUNCTIONAL BLOCK DIAGRAM
2
1A
3
SW
1OE
1
5
2A
6
SW
2OE
2B
B
A
4
9
3A
1B
8
SW
3B
10
3OE
11
12
4A
SW
4OE
OE
4B
4
NOTE:
1. Pin numbers shown apply to the 14-pin TSSOP package.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2001
1
c
2001
Integrated Device Technology, Inc.
DSC-5740/2
IDT74CBTLV3126
LOW-VOLTAGE QUADRUPLE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
NC
1
16
V CC
1OE
2
15
4OE
4A
1A
3
14
4A
11
4B
1B
4
13
4B
5
10
3OE
2OE
5
12
3OE
2B
6
9
3A
2A
6
11
3A
GND
7
8
3B
2B
7
10
3B
GND
8
9
NC
1OE
1
14
V CC
1A
2
13
4OE
1B
3
12
2OE
4
2A
SO14-3
TSSOP
TOP VIEW
QSOP
TOP VIEW
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
FUNCTION TABLE
(1)
Description
Supply Voltage Range
Max.
–0.5 to 4.6
Unit
V
Input Voltage Range
–0.5 to 4.6
V
Continuous Channel Current
128
mA
IIK
Input Clamp Current, VI/O < 0
–50
mA
TSTG
Storage Temperature
–65 to +150
°C
VI
SO16-7
(1)
Input OE
Inputs/Outputs
H
L
A Port = B Port
Disconnect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
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.
OPERATING CHARACTERISTICS, TA = 25°C
Symbol
VCC
Supply Voltage
VIH
High-Level Control Input Voltage
VIL
TA
Parameter
Low-Level Control Input Voltage
Test Conditions
Min.
2.3
Max.
3.6
VCC = 2.3V to 2.7V
1.7
—
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 of the device.
2
Unit
V
V
V
°C
IDT74CBTLV3126
LOW-VOLTAGE QUADRUPLE BUS SWITCH
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
—
—
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
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
VO = 3V or 0, OE = GND
—
6
—
pF
—
5
8
CIO(OFF)
Max at VCC = 2.3V
VI = 0
IO = 64mA
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 3.3V, +25°C ambient.
2. The increase in supply current is attributable to each input 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)
tEN
tDIS
Parameter
Propagation Delay
A to B or B to A
Output Enable Time
OE to A or B
Output Disable Time
OE to A or B
VCC = 3.3V ± 0.3V
Min.
−
Max.
0.15
Min.
−
Max.
0.25
Unit
ns
1
4.5
1
4.2
ns
1
4.7
1
4.8
ns
NOTE:
1. The propagation time 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
IDT74CBTLV3126
LOW-VOLTAGE QUADRUPLE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
PROPAGATION DELAY
TEST CONDITIONS
Symbol
VLOAD
VCC(1)= 3.3V ± 0.3V
6
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
SAME PHASE
INPUT TRANSITION
pF
VIH
VT
0V
DISABLE
ENABLE
500 Ω
CONTROL
INPUT
GND
tPZL
VOUT
D.U.T.
RT
tPHL
OUTPUT
SWITCH
NORMALLY
CLOSED
LOW
tPZH
OUTPUT SWITCH
NORMALLY
OPEN
HIGH
500Ω
CL
DEFINITIONS:
1. CL = Load capacitance: includes jig and probe capacitance.
2. RT = Termination resistance: should be equal to ZOUT of the Pulse
Generator.
SWITCH POSITION
Switch
VLOAD
tPHZ/tPZH
GND
tPD
Open
tPLZ
VIH
VT
0V
VLOAD/2
VLOAD/2
VT
VOL + VLZ
VOL
tPHZ
VT
VOH
VOH -VHZ
0V
0V
NOTE:
1. Diagram shown for input control Enable-LOW and input Control
Disable-HIGH.
NOTES:
1. Pulse Generator for all pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse Generator for all pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.
Test
tPLZ/tPZL
VOH
VT
VOL
ENABLE AND DISABLE TIMES
Open
Pulse
Generator
tPLH
VLOAD
VCC
VIN
tPHL
OPPOSITE PHASE
INPUT TRANSITION
TEST CIRCUITS FOR ALL OUTPUTS
(1, 2)
tPLH
OUTPUT
VIH
VT
0V
4
IDT74CBTLV3126
LOW-VOLTAGE QUADRUPLE BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT
XX
Tem p. R ange
CBTLV
XXXX
Device Type
X
Package
PG
Q
Thin Shrink Small Outline Package (SO14-3)
Quarter Small Outline Package (SO16-7)
3126
Low-Voltage Quadruple Bus Switch
74
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5
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