ETC IDT74CBTLV32862Q

IDT74CBTLV32862
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
LOW-VOLTAGE 10-BIT
BUS SWITCH WITH ACTIVE
HIGH AND LOW ENABLES
FEATURES:
–
–
–
–
–
–
IDT74CBTLV32862
DESCRIPTION:
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 CBTLV32862 is a ten bit high-speed bus switch. It adds an internal
series resistor with each switch to reduce reflection noise in high-speed
applications. When closed, the switch acts as a source (series) termination
for the driver connected to it.
The device is organized as one 10-bit bus switch. The switches are
controlled by independent active-low enable (OE) and active-high enable
(OE) controls.
To ensure the 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, and
OE should be tied to GND.
APPLICATIONS:
− 3.3V High Speed Bus Switching and Bus Isolation
FUNCTIONAL BLOCK DIAGRAM
A1
A10
OE
OE
2
SIMPLIFIED SCHEMATIC, EACH
SWITCH
22
SW
11
SW
13
B1
B10
A
B
1
23
OE
OE
INDUSTRIAL TEMPERATURE RANGE
JANUARY 2001
1
c
2001
Integrated Device Technology, Inc.
DSC-5867/2
IDT74CBTLV38262
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS
PIN CONFIGURATION
Symbol
VCC
Description
Supply Voltage Range
Max.
–0.5 to 4.6
Unit
V
VI
Input Voltage Range
–0.5 to 4.6
V
128
mA
–50
mA
–65 to +150
°C
OE
1
24
V CC
A1
2
23
OE
A2
3
22
B1
IIK
Input Clamp Current, , VI/O < 0
TSTG
Storage Temperature
A3
4
21
B2
A4
5
20
B3
A5
6
19
B4
A6
7
18
B5
A7
8
17
B6
A8
9
16
B7
A9
10
15
B8
A 10
11
14
B9
GND
12
13
B 10
SO24-7
SO24-8
SO24-9
(1)
Continuous Channel Current
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
(1)
Inputs
OE
SSOP/ QSOP/ TSSOP
TOP VIEW
OE
Function
L
L
Disconnect
L
H
Disconnect
H
L
A Port = B Port
H
H
Disconnect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
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 device operation.
2
Unit
V
V
V
°C
IDT74CBTLV32862
LOW-VOLTAGE 10-BIT 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 = VCC, OE = VCC
—
6
—
pF
VI = 0
IO = 64mA
20
28
40
CIO(OFF)
VCC = 2.3V
Typ at VCC = 2.5V
RON (3)
IO = 24mA
20
28
40
VI = 1.7V
IO = 15mA
20
50
65
VI = 0
IO = 64mA
20
28
40
IO = 24mA
20
28
40
IO = 15mA
20
35
45
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 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.
0.85
Min.
—
Max.
1.4
Unit
ns
1
6
1
5.3
ns
1
5.5
1
5.5
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
IDT74CBTLV38262
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
Symbol
VLOAD
VCC(1)=
3.3V ± 0.3V
6
PROPAGATION DELAY
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
500 Ω
DISABLE
CONTROL
INPUT
GND
tPZL
D.U.T.
OUTPUT
SW ITCH
NORMALLY
CLOSED
LOW
tPZH
OUTPUT SW ITCH
NORMALLY
OPEN
HIGH
NOTE:
500 Ω
CL
DEFINITIONS:
1.
CL = Load capacitance: includes jig and load capacitance.
RT = Termination resistance: should be equal to ZOUT of the pulse
generator.
NOTES:
1.
2.
V IH
VT
0V
ENABLE
V OUT
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
V OH
VT
VOL
ENABLE AND DISABLE TIMES
Open
Pulse
Generator
tPLH
V LOAD
V CC
(1, 2)
t PHL
OPPOSITE PHASE
INPUT TRANSITION
TEST CIRCUITS FOR ALL OUTPUTS
V IN
tPLH
OUTPUT
V IH
VT
0V
4
tPLZ
V IH
VT
0V
V LOAD/2
V LOAD/2
VT
V OL + V LZ
V OL
tPHZ
VT
V OH
V OH -V HZ
0V
0V
Diagram shown for Input Control Enable-LOW and Input Control
Disable-HIGH.
IDT74CBTLV32862
LOW-VOLTAGE 10-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT
XX
Temp. Range
CBTLV
XXX
XX
Device Type
Package
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
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Shrink Sm all Outline Package (SO24-7)
Quarter-size Sm all Outline Package (SO24-8)
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32862
Low-Voltage 10-Bit Bus Switch
74
–40°C to +85°C
for SALES:
800-345-7015 or 408-727-6116
fax: 408-492-8674
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