SN74AVC8T245-Q1 Datasheet, PDF (1/22 Pages) Texas Instruments – 8-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SN74AVC8T245-Q1
www.ti.com
SCES785A – DECEMBER 2008 – REVISED JUNE 2011
8-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
Check for Samples: SN74AVC8T245-Q1
FEATURES
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• Qualified for Automotive Applications
• Control Inputs V_IH/V_IL Levels Are Referenced to
V_CCA Voltage
• V_CC Isolation Feature – If Either V_CC Input Is at
GND, All I/O Ports Are in the High-Impedance
State
• I_off Supports Partial Power-Down-Mode
Operation
• Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the Full 1.4-V to
3.6-V Power-Supply Range
• I/Os Are 4.6-V Tolerant
• Max Data Rates
– 170 Mbps (V_CCA < 1.8 V or V_CCB < 1.8 V)
– 320 Mbps (V_CCA ≥ 1.8 V and V_CCB ≥ 1.8 V)
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
RHL PACKAGE
(TOP VIEW)
1
DIR 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
A8 10
GND 11
12
24
23 V_CCB
22 OE
21 B1
20 B2
19 B3
18 B4
17 B5
16 B6
15 B7
14 B8
13
V_CCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
GND
PW PACKAGE
(TOP VIEW)
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
V_CCB
V_CCB
OE
B1
B2
B3
B4
B5
B6
B7
B8
GND
DESCRIPTION/ORDERING INFORMATION
This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74AVC8T245
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_CCB as 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.
The SN74AVC8T245 is designed for asynchronous communication between data buses. The device transmits
data 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 outputs so the buses are
effectively isolated.
The SN74AVC8T245 is designed so the control pins (DIR and OE) are supplied by V_CCA.
The SN74AVC8T245 solution is compatible with a single-supply system and can be replaced later with a '245
function, with minimal printed circuit board redesign.
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
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