SN74LVCH8T245
8-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
www.ti.com
SCES637A–AUGUST 2005–REVISED FEBRUARY 2007
FEATURES
•
•
•
Control Inputs VIH/VIL Levels Are Referenced
to VCCA Voltage
•
•
•
Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
VCC Isolation Feature – If Either VCC Input Is at
GND, All Are in the High-Impedance State
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the Full 1.65-V to
5.5-V Power-Supply Range
BKR
ESD Protection Exceeds JESD 22
–
–
–
4000-V Human-Body Model (A114-A)
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101)
DB, DGV, OR PW PACKAGE
(TOP VIEW)
RHL PACKAGE
(TOP VIEW)
V
DIR
1
2
3
4
5
6
7
8
9
10
24
23
22
V
V
CCA
CCB
CCB
1
24
A1
A2
A3
A4
A5
A6
A7
A8
OE
23
22
21
20
19
18
17
16
15
2
3
4
5
6
7
8
9
DIR
A1
A2
A3
A4
A5
A6
A7
V
CCB
21 B1
20 B2
19 B3
18 B4
OE
B1
B2
B3
B4
B5
B6
B7
17
16
15
B5
B6
B7
GND 11
GND 12
14 B8
A8 10
GND
13 GND
14 B8
11
12
13
DESCRIPTION/ORDERING INFORMATION
This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The
SN74LVCH8T245 is optimized to operate with VCCA and VCCB set at 1.65 V to 5.5 V. The A port is designed to
track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB
accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation
between any of the 1.8-V, 2.5-V, 3.3-V, and 5.5-V voltage nodes.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
SN74LVCH8T245RHLR
SN74LVCH8T245DBR
TOP-SIDE MARKING
NJ245
QFN – RHL
SSOP – DB
Reel of 1000
Reel of 2000
Tube of 60
NJ245
NJ245
NJ245
–40°C to 85°C
SN74LVCH8T245PW
TSSOP – PW
TVSOP – DGV
Reel of 2000
Reel of 2000
SN74LVCH8T245PWR
SN74LVCH8T245DGVR
(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.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2007, 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.