19-1847; Rev 3; 5/09
1µA, 2Mbps, Low-Voltage Level
Translators in SC70 and µDFN
General Description
The MAX3370/MAX3371 logic-level translators are ideal
for applications interfacing low-voltage devices to other
logic levels. Externally applied voltages set the logic
levels of the MAX3370/MAX3371. The devices accept
V
CC
from +2.5V to +5.5V and V
L
from +1.6V to +5.5V,
allowing data transfer between low-voltage ASICs and
higher voltage devices. The MAX3371 features a shut-
down mode that reduces supply current to < 1µA and
puts the I/O pins in a high-impedance state.
The MAX3370/MAX3371 are bidirectional level shifters,
allowing data transfer from the V
CC
side to the V
L
side
and from the V
L
side to the V
CC
side. Both devices
operate at speeds up to 2Mbps with an active driver
and up to 500kbps with an open-drain driver.
The MAX3370/MAX3371 are available in space-saving
µDFN (1mm x 1.5mm) and SC70 packages.
Features
♦
Allow Bidirectional Level Translation
♦
Miniature
µDFN
(1mm x 1.5mm) and SC70
Packages
♦
Operational Down to 1.6V
♦
Low Quiescent Current (< 100µA)
♦
Ultra-Low (< 1µA) Shutdown Supply Current
(MAX3371)
♦
Three-State Outputs in Shutdown (MAX3371)
♦
2Mbps (10pF Load) Push-Pull Driving
♦
1Mbps (50pF Load) Push-Pull Driving
♦
500kbps (30pF Load) Open-Drain Driving
MAX3370/MAX3371
†
Ordering Information
PART*
MAX3370EXK+T
MAX3370ELT+T
MAX3371ELT+T
MAX3371EXT+T
PIN-PACKAGE
5 SC70
6 μDFN
6 μDFN
6 SC70
SHDN
NO
NO
YES
YES
TOP MARK
ABV
KX
KY
AAO
________________________Applications
Cell Phone Cradles
Cell Phone Hands-Free Kits
Portable POS Systems
Portable Communication Devices
Smart Card Readers
SPI™, MICROWIRE™, and I
2
C Level Translation
Low-Voltage ASIC Level Translation
RS-232-Compatible Translation
SPI is a trademark of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
*All
devices are specified over the -40°C to +85°C operating
temperature range.
+Denotes
lead(Pb)-free/RoHS-compliant package.
Pin Configurations
TOP VIEW
V
L
1
5
V
CC
V
L
1
6
V
CC
Typical Operating Circuit
+1.8V
V
L
SHDN
*
MAX3370
MAX3371
GND
2
MAX3370
GND
2
MAX3370
5
N.C.
+3.3V
V
CC
3.3V SYSTEM
I/O V
L
3
4
I/O V
CC
I/O V
L
3
4
I/O V
CC
1.8V
SYSTEM
CONTROLLER
5 SC70
6
μDFN
(1mm x 1.5mm)
6
V
CC
V
L
1
6
V
CC
V
L
1
DATA
GND
I/O V
L
I/O V
CC
GND
DATA
GND
GND
2
MAX3371
5
SHDN
GND
2
MAX3371
5
SHDN
*MAX3371 ONLY
I/O V
L
3
4
I/O V
CC
I/O V
L
3
4
I/O V
CC
6 SC70
†
M.
6
μDFN
(1mm x 1.5mm)
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1µA, 2Mbps, Low-Voltage Level
Translators in SC70 and µDFN
MAX3370/MAX3371
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND ..............................................................-0.3V to +7V
SHDN
to GND ...............................................-0.3V to (V
L
+ 0.3V)
I/O V
L
to GND................................................-0.3V to (V
L
+ 0.3V)
V
L
, I/O V
CC
to GND ...................................-0.3V to (V
CC
+ 0.3V)
Short-Circuit Duration: I/O V
L
, I/O V
CC
to GND..........Continuous
Continuous Power Dissipation (T
A
= +70°C)
SC70 (derate 3.1mW/°C above +70°C) .......................245mW
6-Pin µDFN (derate 2.1mW/°C above +70°C) ..............168mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= +2.5V to +5.5V, V
L
= +1.6V to +5.5V (Note 1), GND = 0; I/O V
L
, I/O V
CC
unconnected; T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
POWER SUPPLIES
V
L
Supply Range
V
CC
Supply Range
Supply Current from V
CC
Supply Current from V
L
V
CC
Shutdown Supply Current
V
L
Shutdown Supply Current
Three-State Output Leakage
Current
LOGIC LEVEL THRESHOLDS
I/O V
L
Input-Voltage High
Threshold
I/O V
L
Input-Voltage Low
Threshold
I/O V
CC
Input-Voltage High
Threshold
I/O V
CC
Input-Voltage Low
Threshold
I/O V
L
Output-Voltage High
I/O V
L
Output-Voltage Low
I/O V
CC
Output-Voltage High
I/O V
CC
Output-Voltage Low
SHDN
Input-Voltage High
SHDN
Input-Voltage Low
V
IHL
V
ILL
V
IHC
V
ILC
V
OHL
V
OLL
V
OHC
V
OLC
V
IH-SHDN
V
IL-SHDN
V
L
V
L
+1.8V
+1.6V
I/O V
L
sink current = 20μA,
I/O V
CC
V
CC
- 0.4V (Note 3)
I/O V
L
sink current = 1mA, I/O V
CC
(Note 3)
I/O V
CC
source current = 20μA,
I/O V
L
V
L
- 0.2V (Note 3)
I/O V
CC
sink current = 1mA,
I/O V
L
0.15V (Note 3)
2/3
V
L
0.4
0.2
0.2V
2/3
V
CC
0.4
0.2
2/3
V
L
0.4
0.15
V
CC
- 0.4
V
L
- 0.2
V
V
V
V
V
V
V
V
V
V
V
L
V
CC
I
QVCC
I
QVL
SHDN
= GND, T
A
= +25°C, MAX3371
SHDN
= GND, T
A
= +25°C, MAX3371
I/O V
L
, I/O V
CC
; SHDN
= GND, T
A
= +25°C,
MAX3371
(Note 1)
1.6
2.5
70
5
0.03
0.03
0.02
5.5
5.5
100
100
1
1
1
V
V
μA
μA
μA
μA
μA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
_______________________________________________________________________________________
1µA, 2Mbps, Low-Voltage Level
Translators in SC70 and µDFN
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.5V to +5.5V, V
L
= +1.6V to +5.5V (Note 1), GND = 0; I/O V
L
, I/O V
CC
unconnected; T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
C
LOAD
= 10pF, data rate = 2Mbps (Note 5)
I/O V
CC
Rise Time
(Note 4)
t
RVCC
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 5)
I/O V
CC
Fall Time
(Note 4)
t
FVCC
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 5)
I/O V
L
Rise Time
(Note 4)
t
RVL
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 5)
I/O V
L
Fall Time
(Note 4)
t
FVL
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 5)
t
PD-VCC-HL
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 5)
LOW-to-HIGH Transition
Propagation Delay
(Driving I/O V
L
)
t
PD-VCC-LH
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 5)
HIGH-to-LOW Transition
Propagation Delay
(Driving I/O V
CC
)
t
PD-VL-HL
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 5)
LOW-to-HIGH Transition
Propagation Delay
(Driving I/O V
CC
)
t
PD-VL-LH
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 3)
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
2
4
5
ns
MIN
TYP
MAX
100
200
400
50
200
400
100
200
400
50
200
400
50
200
400
200
400
800
50
200
400
200
400
800
ns
ns
ns
ns
ns
ns
ns
ns
UNITS
MAX3370/MAX3371
TIMING CHARACTERISTICS
(R
LOAD
= 1M , V
CC
= +2.5V, V
L
= +1.6V, I/O test signal rail-to-rail, unless otherwise noted, Figure 1) (Note 3)
HIGH-to-LOW Transition
Propagation Delay
(Driving I/O V
L
)
HIGH-to-LOW Transition
Propagation Delay
Device-to-Device Skew
(Driving I/O V
L
)
_______________________________________________________________________________________
3
1µA, 2Mbps, Low-Voltage Level
Translators in SC70 and µDFN
MAX3370/MAX3371
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.5V to +5.5V, V
L
= +1.6V to +5.5V (Note 1), GND = 0; I/O V
L
, I/O V
CC
unconnected; T
A
= -40°C to +85°C, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
LOW-to-HIGH Transition
Propagation Delay
Device-to-Device Skew
(Driving I/O V
L
)
SYMBOL
CONDITIONS
C
LOAD
= 10pF, data rate = 2Mbps (Note 3)
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 3)
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF, data rate = 2Mbps (Note 3)
C
LOAD
= 50pF, data rate = 1Mbps
C
LOAD
= 30pF, data rate = 500kbps,
open-drain drive
C
LOAD
= 10pF (Note 5)
Maximum Data Rate
C
LOAD
= 50pF
C
LOAD
= 30pF, open-drain drive
2
1
0.5
MIN
TYP
5
8
80
2
4
5
7
8
50
3
2
1
Mbps
ns
ns
ns
MAX
UNITS
HIGH-to-LOW Transition
Propagation Delay
Device-to-Device Skew
(Driving I/O V
CC
)
LOW-to-HIGH Transition
Propagation Delay
Device-to-Device Skew
(Driving I/O V
CC
)
Note 1:
V
L
must always be less than or equal to V
CC
.
Note 2:
All units are 100% production tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by design
and not production tested.
Note 3:
Tested only at worst case: V
CC
= +2.5V, V
L
= +1.6V.
Note 4:
10% to 90%.
Note 5:
Guaranteed by correlation to C
LOAD
= 50pF.
4
_______________________________________________________________________________________
1µA, 2Mbps, Low-Voltage Level
Translators in SC70 and µDFN
MAX3370/MAX3371
+1.6V
V
L
V
CC
+2.5V
+1.6V
V
L
V
CC
+2.5V
MAX3370
MAX3371
I/O V
L
I/O V
CC
GND
DATA
R
LOAD
C
LOAD
C
LOAD
DATA
R
LOAD
MAX3370
MAX3371
I/O V
L
I/O V
CC
GND
I/O V
L
tRISE, tFALL
≤
10ns
tPD-VCC-LH
tPD-VCC-HL
I/O V
CC
tRISE, tFALL
≤
10ns
tPD-VL-LH
tPD-VL-HL
I/O V
CC
tRVCC
tFVCC
I/O V
L
tRVL
tFVL
Figure 1a. Rail-to-Rail Driving I/O V
L
Figure 1b. Rail-to-Rail Driving I/O V
CC
+1.6V
V
L
V
CC
+2.5V
+1.6V
V
L
V
CC
+2.5V
MAX3370
MAX3371
I/O V
L
I/O V
CC
GND
DATA
R
LOAD
C
LOAD
C
LOAD
DATA
R
LOAD
MAX3370
MAX3371
I/O V
L
I/O V
CC
GND
I/O V
L
tRISE, tFALL
≤
10ns
tPD-VCC-LH
tPD-VCC-HL
I/O V
CC
tRISE, tFALL
≤
10ns
tPD-VL-LH
tPD-VL-HL
I/O V
CC
tRVCC
tFVCC
I/O V
L
tRVL
tFVL
Figure 1c. Open-Drain Driving I/O V
L
Figure 1d. Open-Drain Driving I/O V
CC
_______________________________________________________________________________________
5
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