SN74CB3Q16244
- High-Bandwidth Data Path (Up to 500 MHz)(1)
- 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 Ω Typical) - Rail-to-Rail Switching on Data I/O Ports
- 0 to 5-V Switching With 3.3-V VCC
- 0 to 3.3-V Switching With 2.5-V VCC
- Bidirectional Data Flow With Near-Zero
Propagation Delay - Low Input and Output Capacitance Minimizes
Loading and Signal Distortion
(Cio(OFF) = 4 pF Typical) - Fast Switching Frequency (fOE = 20 MHz
Maximum) - 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 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 and 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)
- 2000-V Human Body Model
- Supports Both Digital and Analog Applications
The SN74CB3Q16244 device is a high-bandwidth FET bus switch using 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 SN74CB3Q16244 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 SN74CB3Q16244 device provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.
The SN74CB3Q16244 device is organized as four 4-bit bus switches with separate output-enable (1OE, 2OE, 3OE, 4OE) inputs. It can be used as four 4-bit bus switches, two 8-bit bus switches, or one 16-bit bus switch. When OE is low, the associated 4-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 4-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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | SN74CB3Q16244 16-Bit FET Bus Switch 2.5-V – 3.3-V Low-Voltage High-Bandwidth Bus Switch datasheet (Rev. A) | PDF | HTML | 2015. 9. 18 | |
| 애플리케이션 노트 | Selecting the Correct Texas Instruments Signal Switch (Rev. E) | PDF | HTML | 2022. 6. 2 | ||
| 애플리케이션 노트 | Multiplexers and Signal Switches Glossary (Rev. B) | PDF | HTML | 2021. 12. 1 | ||
| Application brief | Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C) | PDF | HTML | 2021. 1. 6 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| TSSOP (DGG) | 48 | Ultra Librarian |
| TVSOP (DGV) | 48 | Ultra Librarian |
| SSOP (DL) | 48 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.