74AVC1T45
SINGLE BIT DUAL POWER SUPPLY TRANSLATING
TRANSCEIVER WITH 3 STATE OUTPUTS
Description
The 74AVC1T45 is a single bit, dual supply transceiver with 3-state
outputs suitable for transmitting a single logic bit across different
voltage domains. The A input/output pin is designed to track V
CCA
while the B input/output tracks V
CCB
. This arrangement allows for
universal low-voltage translation between any voltages from 1.2V to
3.6V. The Direction pin (DIR) controls the direction of the transceiver
and in a logic voltage related to V
CCA
. When a high logic level is
applied to DIR the A pin becomes an input and the B pin becomes the
output. Conversely the roles of A and B are reversed when DIR is
asserted low.
The 3-state feature occurs when either of the power supply voltages
are zero. This is also an Ioff feature and allows for the output to
remain in a high impedance state with both power supplies at 0V
preventing damaging backflow currents and providing power down
electrical isolation up to 3.6 V as not to interfere with any logic activity
on pin A or B.
Pin Assignments
(Top View )
Vcc(A)
1
GND
2
A
3
SOT26
SOT363
(Bottom View)
A
3
GND
2
Vcc(A)
1
6
Vcc(B)
5
DIR
4
B
(Top View )
Vcc(A)
1
GND
2
A
3
6
NEW PRODUCT
Vcc(B)
5
DIR
4
B
4
B
5
DIR
6
Vcc(B)
X1-DFN1010-6
X2-DFN0910-6
X2-DFN1410-6
X2-DFN1409-6
Chip Scale
Alternative
Features
Wide Supply Voltage Range:
V
CC
(A): from 1.2V to 3.6V
V
CC
(B): from 1.2V to 3.6V
± 12mA Output Drive at 3.3V
High Noise Immunity - (100mV hysteresis typical)
I
OFF
Supports Partial-Power-Down Mode Operation
I
OFF
controlled by either V
CC
being at 0V
Inputs accept up to 4.6V
ESD Protection Exceeds JESD 22
200-V Machine Model (A115)
2000-V Human Body Model (A114)
1000 V Charged Device Model ( C101)
Latch-Up Exceeds 100mA per JESD 78, Class I
X2-DFN1409-6 package designed as a direct replacement for
chip scale packaging.
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Voltage Level Translation
Well suited to join logic types operating at different voltages
Power Down Signal Isolation
If either voltage domain is turned off the signal is isolated and
there is no loading on signal lines
Wide array of products such as:
Cell Phones, Tablets, E-Readers
PCs, Notebooks, Netbooks, Ultrabooks
Networking, Routers, Gateways
Computer Peripherals, Hard Drives, CD/DVD ROMs
TVs, DVDs, DVRs, Set Top Boxes
Personal Navigation / GPS
MP3 players, Cameras, Video Recorders
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
74AVC1T45
Document number: DS38131 Rev. 1 – 2
1 of 17
www.diodes.com
September 2016
© Diodes Incorporated
74AVC1T45
Logic Diagram
DIR
5
A
NEW PRODUCT
3
4
V
CC
(A)
V
CC
(B)
B
Absolute Maximum Ratings
(Note 5) (@T
A
= +25°C, unless otherwise specified.)
Symbol
ESD HBM
ESD CDM
ESD MM
V
CC
(A), V
CC
(B)
V
I
V
O
V
O
I
IK
I
OK
I
O
T
J
T
STG
Note:
Parameter
Human Body Model ESD Protection
Charged Device Model ESD Protection
Machine Model ESD Protection
Supply Voltage Range
Input Voltage Range
Voltage Applied to Output in High Impedance or I
OFF
State
Voltage Applied to Output in High or Low State
Input Clamp Current V
I
<0
Output Clamp Current
Continuous Output Current
Continuous Current Through V
cc
or GND
Operating Junction Temperature
Storage Temperature
A pin
B pin
Rating
2
1
200
-0.5 to +4.6
-0.5 to +4.6
-0.5 to +4.6
-0.5 to V
CC
(A) +0.5
-0.5 to V
CC
(B) +0.5
-50
-50
±50
±100
-40 to +150
-65 to +150
Unit
kV
kV
V
V
V
V
V
V
mA
mA
mA
mA
°C
°C
5. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device
operation should be within recommend values.
74AVC1T45
Document number: DS38131 Rev. 1 – 2
3 of 17
www.diodes.com
September 2016
© Diodes Incorporated
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