IDT74CBTLV3861
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
LOW-VOLTAGE 10-BIT
BUS SWITCH
IDT74CBTLV3861
FEATURES:
–
–
–
–
–
–
–
5Ω A/B bidirectional switch
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 SSOP, QSOP, and TSSOP packages
DESCRIPTION:
The CBTLV3861 provides ten bits of high-speed bus switching with
low on-state resistance of the switch allowing connections to be made
with minimal propagation delay.
The device is organized as one 10-bit bus switch. When output
enable (OE) is low, the 10-bit bus switch is on and port A is connected
to port B. When
OE
is high, the switch is open and a high-impedance
state exists between the two ports.
To ensure the high-impedance state during power up or power down,
OE
should be tied to V
CC
through a pullup 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
FUNCTIONAL BLOCK DIAGRAM
SIMPLIFIED SCHEMATIC, EACH
SWITCH
A1
2
SW
22
B1
A
A10
11
B
SW
13
B10
23
OE
OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c
2000 Integrated Device Technology, Inc.
DECEMBER 2000
DSC-5741/-
IDT74CBTLV3861
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
Description
Supply Voltage Range
Input Voltage Range
Continuous Channel Current
I
IK
T
STG
Input Clamp Current, , V
I/O
< 0
Storage Temperature
Max.
–0.5 to 4.6
–0.5 to 4.6
128
–50
(1)
Unit
V
V
mA
mA
°C
NC
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
A
10
GND
1
2
3
4
5
6
7
8
9
10
11
12
SO24-7
SO24-8
SO24-9
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
OE
B
1
B
2
B
3
B
4
B
5
B
6
B
7
B
8
B
9
B
10
V
I
–65 to +150
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.
FUNCTION TABLE
Input
OE
L
H
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
(1)
Operation
A Port = B Port
Disconnect
SSOP/ QSOP/ TSSOP
TOP VIEW
OPERATING CHARACTERISTICS, T
A
= 25°C
Symbol
V
CC
V
IH
Parameter
Supply Voltage
High-Level Control Input Voltage
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
IL
Low-Level Control Input Voltage
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
T
A
Operating Free-Air Temperature
Test Conditions
Min.
2.3
1.7
2
—
—
−40
Max.
3.6
—
—
0.7
0.8
+85
°C
V
Unit
V
V
NOTE:
1. All unused control inputs of the device must be held at V
CC
or GND to ensure proper device operation.
2
IDT74CBTLV3861
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: T
A
= – 40°C to +85°C
Symbol
V
IK
I
I
I
OZ
I
OFF
I
CC
∆I
CC
(2)
C
I
C
IO(OFF)
V
CC
= 2.3V
Typ at V
CC
= 2.5V
R
ON
(3)
Parameter
Control Inputs, Data I/O
Control Inputs, Data I/O
Data I/O
Test Conditions
V
CC
= 3V, I
I
=
−18mA
V
CC
= 3.6V, V
I
= V
CC
or GND
V
CC
= 3.6V, V
O
= 0 or 3.6V, switch disabled
V
CC
= 0, V
I
or V
O
= 0 to 3.6V
V
CC
= 3.6V, I
O
= 0, V
I
= V
CC
or GND
Min.
—
—
—
—
—
—
—
—
Typ.
(1)
—
—
—
—
—
—
4
6
5
5
27
5
5
10
Max.
– 1.2
±1
5
50
10
300
—
—
8
8
40
7
7
15
Unit
V
µA
µA
µA
µA
µA
pF
pF
Control Inputs
Control Inputs
V
CC
= 3.6V, One input at 3V
,
Other inputs at V
CC
or GND
V
I
=3V or 0
V
O
= 3V or 0,
OE
= V
CC
V
I
= 0
V
I
= 1.7V
V
I
= 0
I
O
= 64mA
I
O
= 24mA
I
O
= 15mA
I
O
= 64mA
I
O
= 24mA
V
I
= 2.4V
I
O
= 15mA
—
—
—
—
—
—
Ω
V
CC
= 3V
NOTES:
1. Typical values are at V
CC
= 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 V
CC
or GND.
3. This is measured by the voltage drop between the A and B terminals at the indicated current through the switch.
SWITCHING CHARACTERISTICS
V
CC
= 2.5V ± 0.2V
Symbol
t
PD
(1)
t
EN
t
DIS
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
Min.
—
1
1
Max.
0.15
4.5
5
V
CC
= 3.3V ± 0.3V
Min.
—
1
1
Max.
0.25
4.2
5
Unit
ns
ns
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
IDT74CBTLV3861
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
Symbol
V
LOAD
V
IH
V
T
V
LZ
V
HZ
C
L
V
CC
(1)
= 3.3V ± 0.3V
6
3
1.5
300
300
50
V
CC
(2)
= 2.5V ± 0.2V
2 x Vcc
Vcc
V
CC
/2
150
150
30
Unit
V
V
V
mV
mV
pF
OPPO SITE PHASE
INPUT TRANSITION
t
PLH
t
PHL
PROPAGATION DELAY
SAM E PHASE
INPUT TRANSITION
t
PLH
OUTPUT
t
PHL
V
IH
V
T
0V
V
OH
V
T
V
OL
V
IH
V
T
0V
TEST CIRCUITS FOR ALL OUTPUTS
V
CC
500
Ω
Pulse
Generator
(1, 2)
ENABLE AND DISABLE TIMES
ENABLE
DISABLE
CONTROL
INPUT
t
PZL
OUTPUT
SW ITCH
NORMALLY
CLOSED
LOW
t
PZH
OUTPUT
SW ITCH
NORMALLY
OPEN
HIGH
V
LOAD/2
V
T
t
PHZ
V
T
0V
t
PLZ
V
IH
V
T
0V
V
LOAD/2
V
OL +
V
LZ
V
OL
V
OH
V
OH -
V
HZ
0V
V
LOAD
Open
GND
V
IN
D.U.T.
V
OUT
R
T
500
Ω
C
L
DEFINITIONS:
C
L
= Load capacitance: includes jig and probe capacitance.
R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse
Generator
NOTES:
1. Pulse Generator for All Pulses: Rate
≤
1.0MHz; t
F
≤
2.5ns; t
R
≤
2.5ns
2. Pulse Generator for All Pulses: Rate
≤
1.0MHz; t
F
≤
2ns; t
R
≤
2ns
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control
Disable HIGH
SWITCH POSITION
Test
t
PLZ
/t
PZL
t
PHZ/
t
PZH
t
PD
Switch
V
LOAD
GND
Open
4
IDT74CBTLV3861
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT
XX
CBTLV
XXX
Device Type
XX
Package
Temp. R ange
PY
Q
PG
Shrink Small Outline Package (SO24-7)
Quarter-size Small Outline Package (SO24-8)
Thin Shrink Small Outline Package (SO24-9)
3861
Low-Voltage 10-Bit Bus Switch
74
–40°C to +85°C
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www.idt.com
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logichelp@idt.com
(408) 654-6459
5
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