IDT IDT74CBTLV16245 Low-voltage 16-bit bus switch latch-up performance exceeds 100ma Datasheet

IDT74CBTLV16245
LOW-VOLTAGE 16-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
LOW-VOLTAGE 16-BIT
BUS SWITCH
IDT74CBTLV16245
FEATURES:
DESCRIPTION:
•
•
•
•
•
•
The CBTLV16245 is a set of 16-bit bus switches. It has standard 16245
pinouts. The device is organized as dual 8-bit low resistance switches with
independent Output Enable (xOE) control inputs. The switches can be
turned on under the control of the LVTTL-compatible Output Enable signals
(xOE) for bidirectional data flow between port A and port B. When xOE is
high, the switch is off and a high impedance exists between Port A and Port
B.
To ensure the high-impedance state during power up or power down,
OE should be tied to VCC through a pullup resistor.
5Ω
Ω 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)
• Available in TSSOP and TVSOP packages
APPLICATIONS:
• 3.3V High Speed Bus Switching and Bus Isolation
FUNCTIONAL BLOCK DIAGRAM
47
1A1
SW
SIMPLIFIED SCHEMATIC, EACH
SWITCH
2
1B1
B
A
1A8
37
SW
12
1B8
48
1OE
OE
36
2A1
2A8
26
SW
SW
13
2B1
23
2B8
25
2OE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
JUNE 2006
1
c
2006 Integrated Device Technology, Inc.
DSC-5885/9
IDT74CBTLV16245
LOW-VOLTAGE 16-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
VCC
NC
1
48
1OE
1B1
2
47
1A1
1B2
3
46
1A2
NC
4
45
NC
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.
1B3
5
44
1A3
1B4
6
43
1A4
NC
1B5
7
42
8
41
NC
1A5
1B6
9
40
1A6
GND
1B7
10
39
11
38
GND
1A7
1B8
12
37
1A8
2B1
13
36
2A1
2B2
14
35
2A2
GND
15
34
GND
xOE
Output Enable (Active LOW)
xAx
Port A Inputs or Outputs
xBx
Port B Inputs or Outputs
2B3
16
33
2A3
2B4
17
32
2A4
VCC
2B5
18
31
19
30
VCC
2A5
2B6
20
29
2A6
GND
2B7
21
28
22
27
GND
2A7
2B8
23
26
2A8
NC
24
25
2OE
PIN DESCRIPTION
Pin Names
Description
FUNCTION TABLE (EACH 8-BIT BUS SWITCH)(1)
Input
OE
Operation
L
A-Port = B-Port
H
Disconnect
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
TSSOP/ TVSOP
TOP VIEW
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
V
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
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
IDT74CBTLV16245
LOW-VOLTAGE 16-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
Symbol
VIK
II
IOZ
Parameter
Test Conditions
Min.
Typ.(1)
Max.
Unit
Control Inputs, Data I/O
VCC = 3V, II = –18mA
—
—
–1.2
V
Control Inputs
VCC = 3.6V, VI = VCC or GND
—
—
±1
µA
Data I/O
VCC = 3.6V, VO = 0V or 3.6V switch disabled
—
—
5
µA
I OFF
VCC = 0V, VI or VO = 0V or 3.6V
—
—
10
µA
ICC
VCC = 3.6V, IO = 0, VI = VCC or GND
—
—
10
µA
ΔICC(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
—
9
—
pF
IO = 64mA
—
5
8
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
CIO(OFF)
Max. at VCC = 2.3V
VI = 0
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.
SWITCHING CHARACTERISTICS
VCC = 2.5V ± 0.2V
Symbol
tPD(1)
Parameter
Propagation Delay
VCC = 3.3V ± 0.3V
Min.
Max.
Min.
Max.
Unit
—
0.15
—
0.25
ns
1
5
1
4.5
ns
1
5.5
1
5
ns
A to B or B to A
tEN
Output Enable Time
OE to A or B
tDIS
Output Disable time
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
IDT74CBTLV16245
LOW-VOLTAGE 16-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS
TEST CONDITIONS
Symbol
VCC(1)= 3.3V±0.3V
VCC(2)= 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
tPLZ/tPZL
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.
Switch
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.
Test
tPLZ
VIH
VT
0V
4
IDT74CBTLV16245
LOW-VOLTAGE 16-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
XXX
XX
CBTLV
IDT
XX
Device Type Package
Temp. Range
CORPORATE HEADQUARTERS
6024 Silver Creek Valley Road
San Jose, CA 95138
PA
PAG
PF
PFG
Thin Shrink Small Outline Package
TSSOP - Green
Thin Very Small Outline Package
TVSOP - Green
16245
Low-Voltage 16-Bit Bus Switch
74
–40°C to +85°C
for SALES:
800-345-7015 or 408-284-8200
fax: 408-284-2775
www.idt.com
5
for Tech Support:
[email protected]
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