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IDT74CBTLV16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH WITH INTERNAL PULL DOWN RESISTORS
FEATURES:
* * * * * * * * 5 A/B bi-directional switch Isolation Under Power-Off Conditions Make-before-break feature Over-voltage tolerant Internal 500 pull-down resistor to GND 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, TSSOP, and TVSOP packages
IDT74CBTLV16292
DESCRIPTION:
The CBTLV16292 is a single 12-bit multiplexing / demultiplexing bus switch, which provides high speed switching. This device has very low ON resistance, resulting in under 250ps propagation delay throught the switch. The demultiplexer side has a 500 resistor (R pulldown) termination to GND to eliminate floating nodes. When the select (S) input is low, the A port is connected to the B1 port, and the R pulldown is connected to the B2 port. Similarly, when the S input is high, A port is connected to B2 port and the R pulldown is connected to B1 port.
APPLICATIONS:
* 3.3V High Speed Bus Switching and Bus Isolation * Resource sharing
FUNCTIONAL BLOCK DIAGRAM
1A
2 54 SW
SIMPLIFIED SCHEMATIC, EACH SWITCH
1B1
RPULLDOWN
RPULLDOWN
A
SW 53
B
1B2
12A
27
SW
30
12B1
RPULLDOWN
SELECT CONTROL CIRCUITRY
RPULLDOWN
SW
30
12B2
S
1
INDUSTRIAL TEMPERATURE RANGE
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c 2002 Integrated Device Technology, Inc.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
AUGUST 2002
DSC-5892/5
IDT74CBTLV16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
S 1A1 NC 2A1 NC 3A1 NC GND 4A1 NC 5A1 NC 6A1 NC 7A1 NC VCC 8A1 GND NC 9A1 NC 10A1 NC 11A1 NC 12A1 NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 NC NC 1B1 1B2 2B1 2B2 3B1 GND 3B2 4B1 4B2 5B1 5B2 6B1 6B2 7B1 7B2 8B1 GND 8B2 9B1 9B2 10B1 10B2 11B1 11B2 12B1 12B2
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VCC VI IIK TSTG Description Supply Voltage Range Input Voltage Range Continuous Channel Current Input Clamp Current, VI/O < 0 Storage Temperature Range Max. -0.5 to 4.6 -0.5 to 4.6 128 -50 -65 to +150 Unit V V mA mA C
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.
PIN DESCRIPTION
Pin Names S xAx xBx Select Input Port A Inputs or Outputs Port B Inputs or Outputs Description
FUNCTION TABLE(1)
Input S L H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level
Operation A Port = B1 Port RPULLDOWN = B2 Port A Port = B2 Port RPULLDOWN = B1 Port
SSOP/ TSSOP/ TVSOP TOP VIEW
OPERATING CHARACTERISTICS(1)
Symbol VCC VIH VIL TA Parameter Supply Voltage High-Level Control Input Voltage Low-Level Control Input Voltage Operating Free-Air Temperature VCC = 2.3V to 2.7V VCC = 2.7V to 3.6V VCC = 2.3V to 2.7V 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.
Test Conditions
Min. 2.3 1.7 2 -- -- -40
Max. 3.6 -- -- 0.7 0.8 +85
Unit V V V C
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IDT74CBTLV16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = -40C to +85C
Symbol VIK II IOFF ICC ICC(2) CI CIO(OFF) Control Inputs Control Inputs A port or B port Max. at VCC = 2.3V Typ. at VCC = 2.5V RON(3) VCC = 3V VI = 2.4V VI = 1.7V VI = 0 Parameter Control Inputs, Data I/O Control Inputs Test Conditions VCC = 3V, II = -18mA VCC = 3.6V, VI = VCC or GND VCC = 0V, VI or VO = 0V or 3.6V VCC = 3.6V, IO = 0, VI = VCC or GND VCC = 3.6V, one input at 3V, other inputs at VCC or GND VI = 3.3V or 0 VO = 3.3V or 0 VI = 0 IO = 64mA IO = 24mA IO = 15mA IO = 64mA IO = 24mA IO = 15mA Min. -- -- -- -- -- -- -- -- -- -- -- -- -- Typ.(1) -- -- -- -- -- 3.5 22.5 5 5 11 3 3 7 Max. -1.2 1 10 10 300 -- -- 8 8 40 7 7 15 Unit V A A A A pF pF
NOTES: 1. Typical values are at 3.3V, +25C 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) tPD(2) tEN tDIS tMB/B(3,4) Propagation Delay A to B or B to A Propagation Delay S to A Output Enable Time S to B Output Disable Time S to B Make-Before-Break Time 0 2 0 2 ns
NOTES: 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). 2. The condition to measure this propagation delay is by observing the change of voltage on the A port introduced by static fields equal to 3V or 0V for 3.3V0.3V or VCC or 0 for 2.5V0.2V on B1 and B2 ports to get the required transition. 3. The make-before-break time is the duration between the make and break, during transition from one selected port to another. 4. This parameter is guaranteed by design but not production tested.
VCC = 3.3V 0.3V Min. -- 2.5 1 1 Max. 0.25 6.7 5 4.5 Unit ns ns ns ns
Parameter
Min. -- 2.5 1 1
Max. 0.15 7.1 5.6 5
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IDT74CBTLV16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS
Symbol VLOAD VIH VT VLZ VHZ CL VCC(1)= 3.3V0.3V 6 3 1.5 300 300 50 VCC(2)= 2.5V0.2V 2 x Vcc Vcc Vcc / 2 150 150 30 Unit V V V mV mV pF
SAME PHASE INPUT TRANSITION tPLH OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL tPHL
VIH VT 0V VOH VT VOL VIH VT 0V
Propagation Delay
VCC 500 Pulse(1, 2) Generator VIN D.U.T. RT 500 CL VOUT
VLOAD Open GND CONTROL INPUT
ENABLE
DISABLE
tPZL OUTPUT SWITCH NORMALLY CLOSED LOW tPZH OUTPUT SWITCH NORMALLY OPEN HIGH VLOAD/2 VT tPHZ VT 0V
tPLZ
VIH VT 0V VLOAD/2 VOL + VLZ VOL VOH VOH -VHZ 0V
Test Circuits for All Outputs
DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. 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.
NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Disable Low waveform applies to outputs that are LOW, except when disabled by the output control S.
Enable and Disable Times
SWITCH POSITION
Test tPLZ/tPZL tPHZ/tPZH tPD Switch VLOAD GND Open
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IDT74CBTLV16292 LOW-VOLTAGE 12-BIT 1:2 MUX / DEMUX BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
XXX XX CBTLV IDT XX Temp. Range Device Type Package
PV PA PF
Shrink Small Outline Package Thin Shrink Small Outline Package Thin Very Small Outline Package
16292
Low-Voltage 12-Bit Mux / Demux Bus Switch with Internal Pull Down Resistors -40C to +85C
74
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