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SN74AVCH20T245GR
20-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
Overvoltage-Tolerant Inputs/Outputs AllowMixed-Voltage-Mode Data Communications Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the Full 1.2-V to
3.6-V Power-Supply RangeIoff Supports Partial-Power-Down Mode
Operation I/Os Are 4.6-V Tolerant Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors Max Data Rates
− 380 Mbps (1.8-V to 3.3-V Translation)
− 260 Mbps (< 1.8-V to 3.3-V Translation)
− 260 Mbps (Translate to 2.5 V)
− 210 Mbps (Translate to 1.8 V)
− 120 Mbps (Translate to 1.5 V)
− 100 Mbps (Translate to 1.2 V) Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II ESD Protection Exceeds JESD 22
− 8000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
− 1000-V Charged-Device Model (C101)
description/ordering informationThis 20-bit noninverting bus transceiver uses two separate configurable power-supply rails. The
SN74AVCH20T245 is optimized to operate with V CCA/V CCB set at 1.4 V to 3.6 V . It is operational with V CCA/V CCBas low as 1.2 V. The A port is designed to track V CCA. V CCA accepts any supply voltage from 1.2 V to 3.6 V. The
B port is designed to track V CCB. V CCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal
low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.
ORDERING INFORMATION†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available
at www.ti.com/sc/package.
GND
1B3
1B4 CCB
1B5
1B6
1B7
GND
1B8
1B9
1B10
2B1
2B2
2B3
GND
2B4
2B5
2B6
VCCB
2B7
2B8
GND
2B9
2B10
2DIR
GND
1A3
1A4 CCA
1A5
1A6
1A7
GND
1A8
1A9
1A10
2A1
2A2
2A3
GND
2A4
2A5
2A6
VCCA
2A7
2A8
GND
2A9
2A10
2OE
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.
