SN74CB3Q16244_15 Datasheet, PDF (1/21 Pages) Texas Instruments – 16-Bit FET Bus Switch

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SN74CB3Q16244
SCDS168A – MAY 2004 – REVISED SEPTEMBER 2015
SN74CB3Q16244 16-Bit FET Bus Switch
2.5-V – 3.3-V Low-Voltage High-Bandwidth Bus Switch
1 Features
•1 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 (r_on)
Characteristics Over Operating Range
(r_on= 5 Ω Typical)
• Rail-to-Rail Switching on Data I/O Ports
– 0 to 5-V Switching With 3.3-V V_CC
– 0 to 3.3-V Switching With 2.5-V V_CC
• Bidirectional Data Flow With Near-Zero
Propagation Delay
• Low Input and Output Capacitance Minimizes
Loading and Signal Distortion
(C_io(OFF) = 4 pF Typical)
• Fast Switching Frequency (f_OE = 20 MHz
Maximum)
• Data and Control Inputs Provide Undershoot
Clamp Diodes
• Low Power Consumption (I_CC = 1 mA Typical)
• V_CC 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
• I_off 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
(1) _{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,
(SCDA008).
2 Applications
• IP Phones: Wired and Wireless
• Optical Modules
• Optical Networking: Video Over Fiber and EPON
• Private Branch Exchange (PBX)
• WiMAX and Wireless Infrastructure Equipment
3 Description
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 (r_on). 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SN74CB3Q16244DGG TSSOP (48) 12.50 mm × 6.10 mm
SN74CB3Q16244DGV TVSOP (48) 9.70 mm × 4.40 mm
SN74CB3Q16244DL SSOP (48) 15.88 mm × 7.49 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
47
1A1
2
SW
1B1
41
2A1
8
SW
2B1
43
1A4
1
1OE
6
SW
1B4
37
2A4
48
2OE
12
SW
2B4
36
3A1
13
SW
3B1
30
4A1
19
SW
4B1
32
3A4
25
3OE
17
SW
3B4
26
4A4
24
4OE
23
SW
4B4
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.