|
Details, datasheet, quote on part number:SN74CB3Q16210
| |
Datasheet text preview:
SN74CB3Q16210 20 BIT SWITCH 2.5 V/3.3 V LOW VOLTAGE FET BUS SWITCH
SCDS166 - MAY 2004
D Member of the Texas Instruments D D D D D D D D D D D D D D D
D
Widebus Family High-Bandwidth Data Path (Up To 500 MHz) 5-V Tolerant I/Os with Device Powered Up or Powered Down Low and Flat ON-State Resistance (ron) Characteristics Over Operating Range (ron = 5 Typical) Rail-to-Rail Switching on Data I/O Ports - 0-V to 5-V Switching With 3.3-V VCC - 0-V to 3.3-V Switching With 2.5-V VCC Bidirectional Data Flow, With Near-Zero Propagation Delay Low Input/Output Capacitance Minimizes Loading and Signal Distortion (Cio(OFF) = 4 pF Typical) Fast Switching Frequency (fOE = 20 MHz Max) Data and Control Inputs Provide Undershoot Clamp Diodes Low Power Consumption (ICC = 1 mA Typical) VCC Operating Range From 2.3 V to 3.6 V Data I/Os Support 0 V 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 100 mA 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, Differential Signal Interface, Memory Interleaving, Bus Isolation, Low-Distortion Signal Gating
DGG, DGV, OR DL PACKAGE (TOP VIEW)
NC 1A1 1A2 1A3 1A4 1A5 1A6 GND 1A7 1A8 1A9 1A10 2A1 2A2 VCC 2A3 GND 2A4 2A5 2A6 2A7 2A8 2A9 2A10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
1OE 2OE 1B1 1B2 1B3 1B4 1B5 GND 1B6 1B7 1B8 1B9 1B10 2B1 2B2 2B3 GND 2B4 2B5 2B6 2B7 2B8 2B9 2B10
NC - No internal connection
For additional information regarding the performance characteristics of the CB3Q family, refer to the TI application report, CBT-C, CB3T, and CB3Q Signal-Switch Families, literature number SCDA008.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Widebus is a trademark of Texas Instruments.
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
1
SCDS166 - MAY 2004
SN74CB3Q16210 20 BIT SWITCH 2.5 V/3.3 V LOW VOLTAGE FET BUS SWITCH
description/ordering information
The SN74CB3Q16210 is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat ON-state resistance allows for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q16210 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems. The SN74CB3Q16210 is organized as two 10-bit bus switches with separate output-enable (1OE, 2OE) inputs. It can be used as two 10-bit bus switches or as one 20-bit bus switch. When OE is low, the associated 10-bit bus switch is ON and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated 10-bit bus switch is OFF, and 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 circuitry prevents damaging current backflow through the device when it is powered down. The device has isolation during power off. 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. ORDERING INFORMATION
TA PACKAGE Tube SSOP - DL -40°C to 85°C TSSOP - DGG TVSOP - DGV Tape and reel Tape and reel Tape and reel ORDERABLE PART NUMBER SN74CB3Q16210DL SN74CB3Q16210DLR SN74CB3Q16210DGGR SN74CB3Q16210DGVR CB3Q16210 CB3Q16210 TOP-SIDE MARKING
BW210 Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each 10-bit bus switch) INPUT OE L H INPUT/OUTPUT A B Z FUNCTION A port = B port Disconnect
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN74CB3Q16210 20 BIT SWITCH 2.5 V/3.3 V LOW VOLTAGE FET BUS SWITCH
SCDS166 - MAY 2004
logic diagram (positive logic)
2 1A1 SW 46 1B1
12 1A10 SW
36 1B10
48 1OE
13 2A1 SW
35 2B1
24 2A10 SW
25 2B10
47 2OE
simplified schematic, each FET switch (SW)
A VCC B
Charge Pump
EN EN is the internal enable signal applied to the switch.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
3
|
|
