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SN74CB3Q3245DGVR 数据表(PDF) 1 Page - Texas Instruments |
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SN74CB3Q3245DGVR 数据表(HTML) 1 Page - Texas Instruments |
1 / 21 page www.ti.com FEATURES 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 NC A1 A2 A3 A4 A5 A6 A7 A8 GND VCC OE B1 B2 B3 B4 B5 B6 B7 B8 DBQ, DGV, OR PW PACKAGE (TOP VIEW) NC - No internal connection RGY PACKAGE (TOP VIEW) 1 20 10 11 2 3 4 5 6 7 8 9 19 18 17 16 15 14 13 12 OE B1 B2 B3 B4 B5 B6 B7 A1 A2 A3 A4 A5 A6 A7 A8 NC - No internal connection DESCRIPTION/ORDERING INFORMATION SN74CB3Q3245 8-BIT FET BUS SWITCH 2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH SCDS124B – JULY 2003 – REVISED MARCH 2005 • Data and Control Inputs Provide Undershoot Clamp Diodes • High-Bandwidth Data Path (up to 500 MHz (1)) • Low Power Consumption (I CC = 1 mA Typical) • Equivalent to IDTQS3VH384 Device • V CC Operating Range From 2.3 V to 3.6 V • 5-V Tolerant I/Os With Device Powered Up or • Data I/Os Support 0- to 5-V Signaling Levels Powered Down (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V) • Low and Flat ON-State Resistance (r on) • Control Inputs Can Be Driven by TTL or Characteristics Over Operating Range 5-V/3.3-V CMOS Outputs (r on = 4 Ω Typ) • I off Supports Partial-Power-Down Mode • Rail-to-Rail Switching on Data I/O Ports Operation – 0- to 5-V Switching With 3.3-V V CC • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II – 0- to 3.3-V Switching With 2.5-V V CC • ESD Performance Tested Per JESD 22 • Bidirectional Data Flow With Near-Zero Propagation Delay – 2000-V Human-Body Model (A114-B, Class II) • Low Input/Output Capacitance Minimizes Loading and Signal Distortion – 1000-V Charged-Device Model (C101) (C io(OFF) = 3.5 pF Typ) • Supports Both Digital and Analog • Fast Switching Frequency (f OE = 20 MHz Max) Applications: PCI Interface, Differential Signal Interface, Memory Interleaving, Bus Isolation, (1) For additional information regarding the performance characteristics of the CB3Q family, refer to the TI application Low-Distortion Signal Gating report, CBT-C, CB3T, and CB3Q Signal-Switch Families, literature number SCDA008. The SN74CB3Q3245 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 SN74CB3Q3245 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems. 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. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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类似说明 - SN74CB3Q3245DGVR |
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