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IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE SWITCH
INDUSTRIAL TEMPERATURE RANGE
LOW-VOLTAGE 24-BIT BUS EXCHANGE SWITCH
IDT74CBTLV16212 PRELIMINARY
FEATURES:
* * * * * *
5 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 SSOP, TSSOP, and TVSOP packages
DESCRIPTION:
The CBTLV16212 provides a set of 24 high-speed switches for bus exchanging and switching. The device has low ON resistance, resulting in under 250ps propagation delay through the switch. The CBTLV16212 operates as a single 24-bit bus switch or as a 12-bit bus exchanger, which provides data exchanging between the four signal ports through the data select (S0-S2) pins. The CBTLV16212 has the break-before-make feature, which allows zero current when switching between ports B1 and B2.
APPLICATIONS:
* 3.3V High Speed Bus Switching and Bus Isolation
FUNCTIONAL BLOCK DIAGRAM
SIMPLIFIED SCHEMATIC, EACH SWITCH
54 1B 1
1A 1
2
SW
SW
SW
1A 2
3
SW
53
1B 2
A
B
12A 1
27
SW
30
12B 1
SW
SW
12A 2
28
SW
29
12B 2
FLOW CONTROL CIRCUITRY
S0
1
S1
56
S2
55
INDUSTRIAL TEMPERATURE RANGE
1
c 2002 Integrated Device Technology, Inc.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
AUGUST 2002
DSC-5889/3
IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
S0 1A1 1A2 2A1 2A2 3A1 3A2 GND 4A1 4A2 5A1 5A2 6A1 6A2 7A1 7A2 VCC 8A1 GND 8A2 9A1 9A2 10A1 10A2 11A1 11A2 12A1 12A2 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 S1 S2 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 Sx xAx xBx Data Select Port A Inputs or Outputs Port B Inputs or Outputs Description
FUNCTION TABLE(1)
S2 L L L L H H H H Inputs S1 L L H H L L H H S0 L H L H L H L H Inputs/Outputs A1 A2 Z B1 B2 Z Z Z B1 B2 Z Z Z B1 B2 Z B2 B1 Operation Disconnect A1 port = B1 port A1 port = B2 port A2 port = B1 port A2 port = B2 port Disconnect A1 port = B1 port A2 port = B2 port A1 port = B2 port A2 port = B1 port
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level Z = High-Impedance
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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IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE 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 IOZ IOFF ICC ICC(2) CI CIO(OFF) Max. at VCC = 2.3V Typ. at VCC = 2.5V RON(3) VCC = 3V VI = 2.4V
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.
Parameter Control Inputs, Data I/O Control Inputs Data I/O
Test Conditions VCC = 3V, II = -18mA VCC = 3.6V, VI = VCC or GND VCC = 3.6V, VO = 0V or 3.6V switch disabled VCC = 0V, VI or VO = 0V or 3.6V VCC = 3.6V, IO = 0, VI = VCC or GND
Min. -- -- -- -- -- -- -- -- IO = 64mA IO = 24mA IO = 15mA IO = 64mA IO = 24mA IO = 15mA -- -- -- -- -- --
Typ.(1) -- -- -- -- -- -- 5 13.5 5 5 27 5 5 10
Max. -1.2 1 5 10 10 300 -- -- 8 8 40 7 7 15
Unit V A A A A A pF pF
Control Inputs Control Inputs
VCC = 3.6V, one input at 3V, other inputs at VCC or GND VI = 3V or 0 VO = 3V or 0 (switch off) VI = 0 VI = 1.7V VI = 0
SWITCHING CHARACTERISTICS
VCC = 2.5V 0.2V Symbol tPD(1) tPD tEN tDIS Propagation Delay A to B or B to A Propagation Delay S to A or B Output Enable Time S to A or B Output DisableTime S 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).
VCC = 3.3V 0.3V Min. -- 3 3 2 Max. 0.25 8.8 8.6 8.8 Unit ns ns ns ns
Parameter
Min. -- 3 3 1
Max. 0.15 11.1 10.9 8.7
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IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE 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.
NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
Enable and Disable Times
SWITCH POSITION
Test tPLZ/tPZL tPHZ/tPZH tPD Switch VLOAD GND Open
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IDT74CBTLV16212 LOW-VOLTAGE 24-BIT BUS EXCHANGE SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
XXX XX CBTLV IDT XX Package Device Type Temp. Range
PV PA PF
Shrink Small Outline Package Thin Shrink Small Outline Package Thin Very Small Outline Package
16212
Low-Voltage 24-Bit Bus Exchange Switch
74
-40C to +85C
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