SN74LVC16646A
16-BIT BUS TRANSCEIVER AND REGISTER
WITH 3-STATE OUTPUTS
www.ti.com
SCES408B–AUGUST 2002–REVISED APRIL 2005
FEATURES
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
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Member of the Texas Instruments Widebus™
Family
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56
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1DIR
1CLKAB
1SAB
GND
1OE
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Operates From 1.65 V to 3.6 V
Inputs Accept Voltages to 5.5 V
2
1CLKBA
1SBA
GND
1B1
3
In Transparent Mode, Max tpd of 5.2 ns
at 3.3 V
4
5
1A1
1A2
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Typical VOLP (Output Ground Bounce)
< 0.8 V at VCC = 3.3 V, TA = 25°C
6
1B2
7
V
CC
V
CC
Typical VOHV (Output VOH Undershoot)
> 2 V at VCC = 3.3 V, TA = 25°C
8
1A3
1A4
1A5
GND
1A6
1A7
1A8
2A1
2A2
2A3
GND
2A4
2A5
2A6
1B3
1B4
1B5
GND
1B6
1B7
1B8
2B1
2B2
2B3
GND
2B4
2B5
2B6
9
10
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16
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Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
3.3-V VCC
)
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Ioff Supports Partial-Power-Down Mode
Operation
Latch-Up Performance Exceeds 250 mA
Per JESD 17
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 1000-V Charged-Device Model (C101)
V
CC
V
CC
2A7
2A8
2B7
2B8
GND
GND
2SBA
2CLKBA
2OE
2SAB
2CLKAB
2DIR
DESCRIPTION/ORDERING INFORMATION
This 16-bit bus transceiver and register is designed for 1.65-V to 3.6-V VCC operation.
The SN74LVC16646A can be used as two 8-bit transceivers or one 16-bit transceiver. The device consists of
bus transceiver circuits, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data
directly from the input bus or from the internal registers.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
SN74LVC16646ADL
TOP-SIDE MARKING
Tube
SSOP – DL
LVC16646A
Tape and reel
SN74LVC16646ADLR
–40°C to 85°C
TSSOP – DGG
TVSOP – DGV
Tape and reel
Tape and reel
SN74LVC16646ADGGR
SN74LVC16646ADGVR
LVC16646A
LD646A
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
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.
Copyright © 2002–2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.