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Data Sheet
SN74CB3Q3257 4-Bit 1-of-2 FET Multiplexer and Demultiplexer
2.5V and 3.3V Low-Voltage High-Bandwidth Bus Switch
1 Features
- High-bandwidth data path (up to 500MHz)
- 5V Tolerant I/Os with device powered up or
powered down
- Low and flat on-state resistance (ron)
characteristics over operating range (ron= 4Ω typical)
- Rail-to-rail switching on data I/O ports
- 0- to 5V Switching with
3.3V VCC
- 0- to 3.3V Switching with
2.5V VCC
- Bidirectional data flow with near-zero
propagation delay
- Low input and output capacitance minimizes
loading and signal distortion (Cio(OFF) = 3.5pF typical)
- Fast switching frequency (f
OE = 20MHz maximum)
- Data and control inputs provide undershoot clamp
diodes
- Low power consumption (ICC = 0.7mA
typical)
- VCC Operating range from 2.3V to
3.6V
- Data I/Os support 0- to 5V signaling levels
(0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V)
- Control inputs can be driven by TTL or 5V and
3.3V 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
- 2000V Human body model
(A114-B, class II)
- 1000V Charged-device
model (C101)
- Supports both digital and analog applications:
USB interface, differential signal interface, bus isolation, low-distortion
signal gating (1)
2 Applications
- IP Phones: wired and
wireless
- Optical modules
- Optical networking: video over
fiber and EPON
- Private branch exchange
(PBX)
- WiMAX and wreless infrastructure
equipment
