SN74AVCH1T45
SINGLE BIT DUAL SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3 STATE OUTPUTS
SCES598C JULY 2004 REVISED OCTOBER 2004
1
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
D
Available in the Texas Instruments
NanoStar
and NanoFree
Packages
D
Control Inputs V
IH
/V
IL
Levels Are
Referenced to V
CCA
Voltage
D
Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the Full 1.2-V to
3.6-V Power-Supply Range
D
I/Os Are 4.6-V Tolerant
D
I
off
Supports Partial-Power-Down Mode
Operation
D
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
description/ordering information
This single-bit noninverting bus transceiver uses two separate configurable power-supply rails. 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 SN74AVCH1T45 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 SN74AVCH1T45 is designed so that the DIR input is powered by V
CCA
.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
NanoStar
- WCSP (DSBGA)
0.23-mm Large Bump - YEP
Tape and reel
SN74AVCH1T45YEPR
_ _ _TF_
-40
°
C to 85
°
C
NanoFree
- WCSP (DSBGA)
0.23-mm Large Bump - YZP (Pb-free)
Tape and reel
SN74AVCH1T45YZPR
_ _ _TF_
SOT (SOT-23) - DBV
Tape and reel
SN74AVCH1T45DBVR
ET1_
SOT (SC-70) - DCK
Tape and reel
SN74AVCH1T45DCKR
TF_
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
DBV/DCK: The actual top-side marking has one additional character that designates the assembly/test site.
YEP/YZP: The actual top-side marking has three preceding characters to denote year, month, and sequence code, and one
following character to designate the assembly/test site. Pin 1 identifier indicates solder-bump composition
(1 = SnPb,
·
= Pb-free).
Copyright
2004, Texas Instruments Incorporated
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.
NanoStar and NanoFree are trademarks of Texas Instruments.
DBV OR DCK PACKAGE
(TOP VIEW)
1
2
3
6
5
4
V
CCA
GND
A
V
CCB
DIR
B
3
2
1
4
5
6
A
GND
V
CCA
B
DIR
V
CCB
YEP OR YZP PACKAGE
(BOTTOM VIEW)
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
SN74AVCH1T45
SINGLE BIT DUAL SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3 STATE OUTPUTS
SCES598C JULY 2004 REVISED OCTOBER 2004
2
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
description/ordering information (continued)
This device is fully specified for partial-power-down applications using I
off
. The I
off
circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
The V
CC
isolation feature ensures that if either V
CC
input is at GND, then both outputs are in the high-impedance
state. The bus-hold circuitry on the powered-up side always stays active.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors
with the bus-hold circuitry is not recommended.
NanoStar
and NanoFree
package technology is a major breakthrough in IC packaging concepts, using the
die as the package.
FUNCTION TABLE
INPUT
DIR
OPERATION
L
B data to A bus
H
A data to B bus
logic diagram (positive logic)
B
DIR
5
4
A
3
VCCA
VCCB
SN74AVCH1T45
SINGLE BIT DUAL SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3 STATE OUTPUTS
SCES598C JULY 2004 REVISED OCTOBER 2004
3
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CCA
and V
CCB
-0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1): I/O ports (A port)
-0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I/O ports (B port)
-0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control inputs
-0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high-impedance or power-off state, V
O
(see Note 1): A port
-0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port
-0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high or low state, V
O
(see Notes 1 and 2): A port
-0.5 V to V
CCA
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port
-0.5 V to V
CCB
+ 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0)
-50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0)
-50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
O
±
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through V
CCA
, V
CCB
, or GND
±
100 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
JA
(see Note 3): DBV package
165
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DCK package
259
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
YEP/YZP package
123
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
-65
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input voltage and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
2. The output positive-voltage rating may be exceeded up to 4.6 V maximum if the output current rating is observed.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
SN74AVCH1T45
SINGLE BIT DUAL SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3 STATE OUTPUTS
SCES598C JULY 2004 REVISED OCTOBER 2004
4
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
recommended operating conditions (see Notes 4 through 8)
VCCI
VCCO
MIN
MAX
UNIT
VCCA
Supply voltage
1.2
3.6
V
VCCB
Supply voltage
1.2
3.6
V
High-level input
Data inputs
1.2 V to 1.95 V
VCCI
×
0.65
VIH
High-level input
voltage
Data inputs
(see Note 7)
1.95 V to 2.7 V
1.6
V
VIH
voltage
(see Note 7)
2.7 V to 3.6 V
2
V
Low-level input
Data inputs
1.2 V to 1.95 V
VCCI
×
0.35
VIL
Low-level input
voltage
Data inputs
(see Note 7)
1.95 V to 2.7 V
0.7
V
VIL
voltage
(see Note 7)
2.7 V to 3.6 V
0.8
V
High-level input
DIR
1.2 V to 1.95 V
VCCA
×
0.65
VIH
High-level input
voltage
DIR
(referenced to VCCA)
1.95 V to 2.7 V
1.6
V
VIH
voltage
(referenced to VCCA)
(see Note 8)
2.7 V to 3.6 V
2
V
Low-level input
DIR
1.2 V to 1.95 V
VCCA
×
0.35
VIL
Low-level input
voltage
DIR
(referenced to VCCA)
1.95 V to 2.7 V
0.7
V
VIL
voltage
(referenced to VCCA)
(see Note 8)
2.7 V to 3.6 V
0.8
V
VI
Input voltage
0
3.6
V
VO
Output voltage
Active state
0
VCCO
V
VO
Output voltage
3-state
0
3.6
V
1.2 V
-3
1.4 V to 1.6 V
-6
IOH
High-level output current
1.65 V to 1.95 V
-8
mA
IOH
High-level output current
2.3 V to 2.7 V
-9
mA
3 V to 3.6 V
-12
1.2 V
3
1.4 V to 1.6 V
6
IOL
Low-level output current
1.65 V to 1.95 V
8
mA
IOL
Low-level output current
2.3 V to 2.7 V
9
mA
3 V to 3.6 V
12
t/
v
Input transition rise or fall rate
5
ns/V
TA
Operating free-air temperature
-40
85
°
C
NOTES:
4. VCCI is the VCC associated with the data input port.
5. VCCO is the VCC associated with the output port.
6. All unused data inputs of the device must be held at VCCI or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
7. For VCCI values not specified in the data sheet, VIH min = VCCI
×
0.7 V, VIL max = VCCI
×
0.3 V.
8. For VCCI values not specified in the data sheet, VIH min = VCCA
×
0.7 V, VIL max = VCCA
×
0.3 V.
SN74AVCH1T45
SINGLE BIT DUAL SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3 STATE OUTPUTS
SCES598C JULY 2004 REVISED OCTOBER 2004
5
POST OFFICE BOX 655303
·
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Notes 9 and 10)
PARAMETER
TEST CONDITIONS
VCCA
VCCB
TA = 25
°
C
-40
°
C to 85
°
C
UNIT
PARAMETER
TEST CONDITIONS
VCCA
VCCB
MIN
TYP
MAX
MIN
MAX
UNIT
IOH = -100
µ
A
1.2 V to 3.6 V
1.2 V to 3.6 V
VCCO - 0.2 V
IOH = -3 mA
1.2 V
1.2 V
0.95
VOH
IOH = -6 mA
VI = VIH
1.4 V
1.4 V
1.05
V
VOH
IOH = -8 mA
VI = VIH
1.65 V
1.65 V
1.2
V
IOH = -9 mA
2.3 V
2.3 V
1.75
IOH = -12 mA
3 V
3 V
2.3
IOL = 100
µ
A
1.2 V to 3.6 V
1.2 V to 3.6 V
0.2
IOL = 3 mA
1.2 V
1.2 V
0.15
VOL
IOL = 6 mA
VI = VIL
1.4 V
1.4 V
0.35
V
VOL
IOL = 8 mA
VI = VIL
1.65 V
1.65 V
0.45
V
IOL = 9 mA
2.3 V
2.3 V
0.55
IOL = 12 mA
3 V
3 V
0.7
II
DIR
input
VI = VCCA or GND
1.2 V to 3.6 V
1.2 V to 3.6 V
±
0.025
±
0.25
±
1
µ
A
VI = 0.42 V
1.2 V
1.2 V
25
VI = 0.49 V
1.4 V
1.4 V
15
IBHL
VI = 0.58 V
1.65 V
1.65 V
25
µ
A
IBHL
VI = 0.7 V
2.3 V
2.3 V
45
µ
A
VI = 0.8 V
3.3 V
3.3 V
100
VI = 0.78 V
1.2 V
1.2 V
-25
VI = 0.91 V
1.4 V
1.4 V
-15
IBHH
VI = 1.07 V
1.65 V
1.65 V
-25
µ
A
IBHH
VI = 1.6 V
2.3 V
2.3 V
-45
µ
A
VI = 2 V
3.3 V
3.3 V
-100
1.2 V
1.2 V
50
1.6 V
1.6 V
125
IBHLO§
VI = 0 to VCC
1.95 V
1.95 V
200
µ
A
IBHLO§
VI = 0 to VCC
2.7 V
2.7 V
300
µ
A
3.6 V
3.6 V
500
1.2 V
1.2 V
-50
1.6 V
1.6 V
-125
IBHHO¶
VI = 0 to VCC
1.95 V
1.95 V
-200
µ
A
IBHHO¶
VI = 0 to VCC
2.7 V
2.7 V
-300
µ
A
3.6 V
3.6 V
-500
The bus-hold circuit can sink at least the minimum low sustaining current at VIL max. IBHL should be measured after lowering VIN to GND and
then raising it to VIL max.
The bus-hold circuit can source at least the minimum high sustaining current at VIH min. IBHH should be measured after raising VIN to VCC and
then lowering it to VIH min.
§ An external driver must source at least IBHLO to switch this node from low to high.
¶ An external driver must sink at least IBHHO to switch this node from high to low.
NOTES:
9. VCCO is the VCC associated with the output port.
10. VCCI is the VCC associated with the input port.
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