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SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
D
Member of the Texas Instruments
Widebus Family
D
Output Voltage Translation Tracks V
CC
Supports Mixed-Mode Signal Operation On
All Data I/O Ports
1
56
55
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53
52
51
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48
47
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NC
1A1
1A2
1A3
1A4
1A5
1A6
GND
1A7
1A8
1A9
1A10
1A11
1A12
2A1
2A2
1OE
2OE
1B1
1B2
1B3
1B4
1B5
GND
1B6
1B7
1B8
1B9
1B10
1B11
1B12
2B1
2B2
2B3
GND
2B4
2B5
2B6
2B7
2B8
2B9
2B10
2B11
2B12
D
2
3
− 5-V Input Down to 3.3-V Output Level
4
Shift, With 3.3-V V
CC
5
− 5-V/3.3-V Input Down to 2.5-V Output
Level Shift, With 2.5-V V
6
CC
7
D
D
D
D
D
D
5-V-Tolerant I/Os, With Device Powered Up
or Powered Down
8
9
Bidirectional Data Flow, With Near-Zero
Propagation Delay
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11
12
13
14
15
16
17
18
19
20
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22
23
24
25
26
27
28
Low ON-State Resistance (r
)
on
Characteristics (r = 5 Ω Typical)
on
Low Input/Output Capacitance Minimizes
Loading (C
= 5 pF Typical)
io(OFF)
Data and Control Inputs Provide
Undershoot Clamp Diodes
V
CC
2A3
GND
2A4
2A5
2A6
2A7
2A8
2A9
Low Power Consumption
(I
= 70 µA Max)
CC
D
V
Operating Range From 2.3 V to 3.6 V
CC
D
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)
D
D
D
D
Control Inputs Can be Driven by TTL or
5-V/3.3-V CMOS Outputs
2A10
2A11
2A12
I
Supports Partial-Power-Down Mode
off
Operation
Latch-Up Performance Exceeds 250 mA Per
JESD 17
NC − No internal connection
ESD Performance Tested Per JESD 22
− 2000-V Human-Body Model
(A114-B, Class II)
− 1000-V Charged-Device Model (C101)
D
D
Supports Digital Applications: Level
Translation, PCI Interface, Bus Isolation
Ideal for Low-Power Portable Equipment
description/ordering information
The SN74CB3T16211 is a high-speed TTL-compatible FET bus switch with low ON-state resistance (r ),
on
allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O
ports by providing voltage translation that tracks V . The SN74CB3T16211 supports systems using 5-V TTL,
CC
3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Figure 1).
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.
Widebus is a trademark of Texas Instruments.
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Copyright 2005, Texas Instruments Incorporated
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1
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