Temas

SN74CBT3383C 10 BIT FET BUS EXCHANGE SWITCH 5 V BUS SWITCH WITH -2 V UNDERSHOOT PROTECTION
SCDS175 − SEPTEMBER 2004

D Undershoot Protection for Off-Isolation on D D D D D D D D D D D
A and B Ports Up to −2 V Bidirectional Data Flow, With Near-Zero Propagation Delay Low ON-State Resistance (ron) Characteristics (ron = 3 Ω Typical) Low Input/Output Capacitance Minimizes Loading and SignalDistortion (Cio(OFF) = 8 pF Typical) Data and Control Inputs Provide Undershoot Clamp Diodes Low Power Consumption (ICC = 3 µA Max) VCC Operating Range From 4 V to 5.5 V Data I/Os Support 0 to 5-V Signaling Levels (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V) Control Inputs Can be Driven by TTL or 5-V/3.3-V CMOS Outputs Ioff Supports Partial-Power-Down Mode Operation Latch-Up Performance Exceeds 100mA Per JESD 78, Class II ESD Performance Tested Per JESD 22 − 2000-V Human-Body Model (A114-B, Class II) − 1000-V Charged-Device Model (C101) Supports Both Digital and Analog Applications: PCI Interface, Memory Interleaving, Bus Isolation, Low-Distortion Signal Gating

DB, DBQ, DGV, DW, OR PW PACKAGE (TOP VIEW)

BE 1B1 1A1 1A2 1B2 2B1 2A1 2A2 2B2 3B1 3A1 GND

1 2 3 4 5 6 7 8 9 10 11 1224 23 22 21 20 19 18 17 16 15 14 13

VCC 5B2 5A2 5A1 5B1 4B2 4A2 4A1 4B1 3B2 3A2 BX

D

description/ordering information
ORDERING INFORMATION
TA SOIC − DW SSOP − DB −40 C 85°C −40°C to 85 C SSOP (QSOP) − DBQ TSSOP − PW PACKAGE† Tube Tape and reel Tape and reel Tape and reel Tube Tape and reel ORDERABLE PART NUMBER SN74CBT3383CDW SN74CBT3383CDWR SN74CBT3383CDBR SN74CBT3383CDBQRSN74CBT3833CPW SN74CBT3833CPWR CU383C CBT3383C CU383C CBT3383C TOP-SIDE MARKING

TVSOP − DGV Tape and reel SN74CBT3833CDGVR CU383C † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Copyright  2004, Texas Instruments Incorporated

POST OFFICE BOX 655303• DALLAS, TEXAS 75265

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SCDS175 − SEPTEMBER 2004

SN74CBT3383C 10 BIT FET BUS EXCHANGE SWITCH 5 V BUS SWITCH WITH -2 V UNDERSHOOT PROTECTION
description/ordering information (continued)
The SN74CBT3383C is a high-speed TTL-compatible FET bus-exchange switch with low ON-state resistance (ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and Bports of the SN74CBT3383C provides protection for undershoot up to −2 V by sensing an undershoot event and ensuring that the switch remains in the proper OFF state. The SN74CBT3383C is organized as a 10-bit bus switch, or as a 5-bit bus-exchange switch with a single output-enable (BE) input that provides data exchanging between four signal ports. The select (BX) input controls the data path of thebus-exchange switch. When BE is low, the A port is connected to the B port, allowing bidirectional data flow between ports. When BE is high, a high-impedance state exists between the A and B ports. This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The devicehas isolation during power off. To ensure the high-impedance state during power up or power down, BE 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.
FUNCTION TABLE (each 5-bit bus-exchange) INPUTS BE L L H BX L H X INPUTS/OUTPUTS 1A1−5A1 1B1−5B1 1B2−5B2 Z 1A2−5A2 1B2−5B2 1B1−5B1 Z FUNCTION A1 port =...