IDT IDT74CBTLVR3862Q

IDT74CBTLVR3862
LOW-VOLTAGE 10-BIT BUS SWITCH WITH ACTIVE HIGH AND LOW ENABLES
LOW-VOLTAGE 10-BIT
BUS SWITCH WITH ACTIVE
HIGH AND LOW ENABLES
INDUSTRIAL TEMPERATURE RANGE
IDT74CBTLVR3862
DESCRIPTION:
FEATURES:
The CBTLVR3862 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.
•
•
•
•
•
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
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
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
AUGUST 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5867/7
IDT74CBTLVR3862
LOW-VOLTAGE 10-BIT BUS SWITCH WITH ACTIVE HIGH AND LOW ENABLES
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
VCC
OE
1
INDUSTRIAL TEMPERATURE RANGE
24
VCC
A1
2
23
OE
A2
3
22
B1
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
A10
11
14
B9
GND
12
13
B10
VI
IIK
TSTG
Description
Max.
Unit
Supply Voltage Range
–0.5 to 4.6
V
Input Voltage Range
–0.5 to 4.6
V
Continuous Channel Current
128
mA
Input Clamp Current, VI/O < 0
–50
mA
–65 to +150
°C
Storage Temperature Range
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
SSOP/ QSOP/ TSSOP
TOP VIEW
OE
Function
OE
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(1)
Symbol
Parameter
VCC
Supply Voltage
VIH
High-Level Control Input Voltage
VIL
Low-Level Control Input Voltage
TA
Operating Free-Air Temperature
Test Conditions
Min.
Max.
Unit
2.3
3.6
V
VCC = 2.3V to 2.7V
1.7
—
V
VCC = 2.7V to 3.6V
2
—
VCC = 2.3V to 2.7V
—
0.7
VCC = 2.7V to 3.6V
NOTE:
1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation.
2
—
0.8
–40
+85
V
°C
IDT74CBTLVR3862
LOW-VOLTAGE 10-BIT BUS SWITCH WITH ACTIVE HIGH AND LOW ENABLES
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = –40°C to +85°C
Symbol
Typ.(1)
Max.
—
—
–1.2
V
—
—
±1
µA
—
—
5
µA
VCC = 0V, VI or VO = 0V or 3.6V
—
—
10
µA
VCC = 3.6V, IO = 0, VI = VCC or GND
—
—
10
µA
Parameter
Test Conditions
Control Inputs, Data I/O
VCC = 3V, II = –18mA
Control Inputs
VCC = 3.6V, VI = VCC or GND
Data I/O
VCC = 3.6V, VO = 0V or 3.6V switch disabled
IOFF
ICC
VIK
II
I OZ
Min.
Unit
∆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
—
8
—
pF
VI = 0
IO = 64mA
—
30
47
IO = 24mA
—
30
47
VI = 1.7V
IO = 15mA
—
36
80
VI = 0
IO = 64mA
—
30
42
IO = 24mA
—
30
42
IO = 15mA
—
32
47
CIO(OFF)
VCC = 2.3V
Typ. at VCC = 2.5V
RON(3)
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)
Parameter
Propagation Delay
VCC = 3.3V ± 0.3V
Min.
Max.
Min.
Max.
Unit
—
0.9
—
1.5
ns
1
6
1
5.3
ns
1
5.5
1
5.5
ns
1
6
1
5.3
ns
1
5.5
1
6
ns
A to B or B to A
tEN
Output Enable Time
OE to A or B
tDIS
Output DisableTime
OE to A or B
tEN
Output Enable Time
OE to A or B
tDIS
Output DisableTime
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 when driven by an ideal voltage source
(zero output impededance).
3
IDT74CBTLVR3862
LOW-VOLTAGE 10-BIT BUS SWITCH WITH ACTIVE HIGH AND LOW ENABLES
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
(1)
(2)
Symbol
VCC = 3.3V±0.3V
VCC = 2.5V±0.2V
Unit
VLOAD
6
2 x Vcc
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
tPLH
tPHL
tPLH
tPHL
OUTPUT
VIH
VT
0V
VOH
VT
VOL
VIH
VT
0V
OPPOSITE PHASE
INPUT TRANSITION
Propagation Delay
VLOAD
VCC
500Ω
Pulse(1, 2)
Generator
VIN
CONTROL
INPUT
GND
tPZL
VOUT
D.U.T.
RT
DISABLE
ENABLE
Open
OUTPUT
SWITCH
NORMALLY CLOSED
LOW
tPZH
OUTPUT SWITCH
NORMALLY
OPEN
HIGH
500Ω
CL
Test Circuits for All Outputs
SWITCH POSITION
Switch
VLOAD
tPHZ/tPZH
GND
tPD
Open
tPHZ
VT
0V
Enable and Disable Times
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
VLOAD/2
VT
VLOAD/2
VOL + VLZ
VOL
VOH
VOH -VHZ
0V
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
tPLZ/tPZL
tPLZ
VIH
VT
0V
4
IDT74CBTLVR3862
LOW-VOLTAGE 10-BIT BUS SWITCH WITH ACTIVE HIGH AND LOW ENABLES
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
CBTLV
X
IDT
XX
Temp. Range
Family
XXX
Device Type
XX
Package
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
PY
Q
PG
Shrink Small Outline Package
Quarter-size Small Outline Package
Thin Shrink Small Outline Package
3862
Low-Voltage 10-Bit Bus Switch
R
25Ω series dampening resistors on A and B ports
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]
(408) 654-6459