SN74CB3T16212_15 Datasheet, PDF (1/17 Pages) Texas Instruments – 24-BIT FET BUS-EXCHANGE SWITCH, 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH WITH 5-V-TOLERANT LEVEL SHIFTER

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SN74CB3T16212
24-BIT FET BUS-EXCHANGE SWITCH, 2.5-V/3.3-V LOW-VOLTAGE BUS SWITCH
WITH 5-V-TOLERANT LEVEL SHIFTER
SCDS157A – OCTOBER 2003 – REVISED FEBRUARY 2005
FEATURES
• Member of the Texas Instruments Widebus™
Family
• Output Voltage Translation Tracks V_CC
• Supports Mixed-Mode Signal Operation on All
Data I/O Ports
– 5-V Input Down to 3.3-V Output Level Shift
With 3.3-V V_CC
– 5-V/3.3-V Input Down to 2.5-V Output Level
Shift With 2.5-V V_CC
• 5-V-Tolerant I/Os With Device Powered Up or
Powered Down
• Bidirectional Data Flow, With Near-Zero
Propagation Delay
• Low ON-State Resistance (r_on) Characteristics
(r_on = 5 Ω Typ)
• Low Input/Output Capacitance Minimizes
Loading (C_io(OFF) = 9 pF Typ)
• Data and Control Inputs Provide Undershoot
Clamp Diodes
• Low Power Consumption (I_CC = 70 µA Max)
• V_CC Operating Range From 2.3 V to 3.6 V
• Data I/Os Support 0-V 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/3.3-V CMOS Outputs
• I_off Supports Partial-Power-Down Mode
Operation
• Latch-Up Performance Exceeds 250 mA Per
JESD 17
• ESD Performance Tested Per JESD 22
– 2000-V Human-Body Model(A114-B, Class II)
– 1000-V Charged-Device Model (C101)
• Supports Digital Applications: Level
Translation, PCI Interface, USB Interface,
Memory Interleaving, and Bus Isolation
• Ideal for Low-Power Portable Equipment
DGG OR DGV PACKAGE
(TOP VIEW)
S0 1
1A1 2
1A2 3
2A1 4
2A2 5
3A1 6
3A2 7
GND 8
4A1 9
4A2 10
5A1 11
5A2 12
6A1 13
6A2 14
7A1 15
7A2 16
V_CC 17
8A1 18
GND 19
8A2 20
9A1 21
9A2 22
10A1 23
10A2 24
11A1 25
11A2 26
12A1 27
12A2 28
56 S1
55 S2
54 1B1
53 1B2
52 2B1
51 2B2
50 3B1
49 GND
48 3B2
47 4B1
46 4B2
45 5B1
44 5B2
43 6B1
42 6B2
41 7B1
40 7B2
39 8B1
38 GND
37 8B2
36 9B1
35 9B2
34 10B1
33 10B2
32 11B1
31 11B2
30 12B1
29 12B2
DESCRIPTION/ORDERING INFORMATION
The SN74CB3T16212 is a high-speed TTL-compatible FET bus-exchange 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_CC. The SN74CB3T16212 supports systems using 5-V TTL,
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2005, Texas Instruments Incorporated