Product
Folder
Sample &
Buy
Support &
Community
Tools &
Software
Technical
Documents
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
•
•
•
•
•
•
•
•
•
•
•
•
•
•
(1)
2 Applications
(1)
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 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)
Supports Both Digital and Analog 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 (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 dataintensive computing systems.
Device Information(1)
PACKAGE
BODY SIZE (NOM)
SN74CB3Q16244DGG TSSOP (48)
PART NUMBER
12.50 mm × 6.10 mm
SN74CB3Q16244DGV TVSOP (48)
9.70 mm × 4.40 mm
SN74CB3Q16244DL
15.88 mm × 7.49 mm
SSOP (48)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Logic Diagram (Positive Logic)
47
1A1
2
43
1A4
41
1B1
2A1
1B4
SW
2A4
6
SW
37
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).
2B1
12
2B4
SW
48
1OE
2OE
36
3A1
13
4A1
3B4
4A4
17
32
SW
25
30
3B1
SW
3A4
3OE
8
SW
19
23
26
4OE
4B1
SW
SW
4B4
24
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.
