74AVC16245DGVRG4 Datasheet, PDF (1/16 Pages) Texas Instruments – 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

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FEATURES
• Member of the Texas Instruments Widebus™
Family
• EPIC™ (Enhanced-Performance Implanted
CMOS) Submicron Process
• DOC™ (Dynamic Output Control) Circuit
Dynamically Changes Output Impedance,
Resulting in Noise Reduction Without Speed
Degradation
• Less Than 2-ns Maximum Propagation Delay
at 2.5-V and 3.3-V V_CC
• Dynamic Drive Capability Is Equivalent to
Standard Outputs With I_OH and I_OL of ±24 mA
at 2.5-V V_CC
SN74AVC16245
16-BIT BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES142L – JULY 1998 – REVISED MAY 2005
• Overvoltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications
• I_off Supports Partial-Power-Down Mode
Operation
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
• Latch-Up Performance Exceeds 250 mA Per
JESD 78
• Package Options Include Plastic Thin Shrink
Small-Outline (DGG) and Thin Very
Small-Outline (DGV) Packages
DESCRIPTION
A Dynamic Output Control (DOC™) circuit is implemented, which, during the transition, initially lowers the output
impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1 shows
typical V_OL vs I_OL and V_OH vs I_OH curves to illustrate the output impedance and drive capability of the circuit. At
the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is equivalent to a
high-drive standard-output device. For more information, refer to the TI application reports, AVC Logic Family
Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC™) Circuitry
Technology and Applications, literature number SCEA009.
3.2 _{TA = 25°C}
2.8 ^{Process = Nominal}
2.4
2.0
V_CC = 3.3 V
T_A = 25°C
2.8 Process = Nominal
2.4
2.0
1.6
V_CC = 2.5 V
1.2
V_CC = 1.8 V
0.8
0.4
0 17
34 51 68 85 102 119 136 153 170
I_OL - Output Current - mA
1.6
1.2
0.8
V_CC = 3.3 V
0.4
V_CC = 2.5 V
V_CC = 1.8 V
-160 -144 -128 -112 -96 -80 -64 -48 -32 -16 0
I_OH - Output Current - mA
Figure 1. Output Voltage vs Output Current
This 16-bit (dual octal) noninverting bus transceiver is operational at 1.2-V to 3.6-V V_CC, but is designed
specifically for 1.65-V to 3.6-V V_CC operation.
The SN74AVC16245 is designed for asynchronous communication between data buses. The control-function
implementation minimizes external timing requirements.
This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission from the
A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR)
input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated.
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, EPIC, DOC are trademarks 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 © 1998–2005, Texas Instruments Incorporated