TXB0108
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO-DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES643A–NOVEMBER 2006–REVISED JANUARY 2007
FEATURES
•
1.2 V to 3.6 V on A Port and 1.65 to 5.5 V on
B Port (VCCA ≤ VCCB
•
ESD Protection Exceeds JESD 22
A Port
)
–
•
VCC Isolation Feature – If Either VCC Input Is at
GND, All Outputs Are in the High-Impedance
State
–
–
–
2000-V Human-Body Model (A114-B)
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101)
•
•
•
OE Input Circuit Referenced to VCCA
–
B Port
Low Power Consumption, 4-µA Max ICC
–
–
–
±15-kV Human-Body Model (A114-B)
Ioff Supports Partial-Power-Down Mode
Operation
200-V Machine Model (A115-A)
1000-V Charged-Device Model (C101)
•
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
GXY OR ZXY PACKAGE
(BOTTOM VIEW)
TERMINAL ASSIGNMENTS
(20-Ball GXY/ZXY Package)
1
2
3
4
5
1
2
3
4
5
B8
D
VCCB
B1
B2
B3
A3
A2
B4
B5
A5
A4
B6
B7
A7
A6
D
C
C
B
A
GND
OE
A8
A1
B
A
VCCA
PW PACKAGE
(TOP VIEW)
RGY PACKAGE
(TOP VIEW)
1
2
20
19
18
17
16
15
14
13
12
11
A1
B1
V
V
CCB
CCA
A2
A3
A4
A5
1
20
3
B2
B3
B4
B5
B6
B7
19
18
17
16
15
14
13
12
2
3
4
5
6
7
8
9
V
V
CCB
CCA
4
A2
B2
B3
B4
B5
B6
B7
B8
A3
A4
A5
A6
A7
A8
5
6
7
A6
A7
8
9
A8
B8
10
OE
GND
10
11
DESCRIPTION/ORDERING INFORMATION
This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to
track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 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 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. VCCA should not exceed VCCB
.
When the output-enable (OE) input is low, all outputs are placed in the high-impedance state.
The TXB0101 is desinged so that the OE input circuit is supplied by VCCA
.
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 © 2006–2007, 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.