ON NLSX3373MUTAG 2-bit 20 mb/s dual-supply level translator Datasheet

NLSX3373
2-Bit 20 Mb/s Dual-Supply
Level Translator
The NLSX3373 is a 2−bit configurable dual−supply bidirectional
auto sensing translator that does not require a directional control pin.
The VCC I/O and VL I/O ports are designed to track two different
power supply rails, VCC and VL respectively. The VCC supply rail is
configurable from 1.65 V to 4.5 V while VL supply rail is
configurable to 1.2 V to 4.1 V. This allows lower voltage logic
signals on the VL side to be translated into higher voltage logic
signals on the VCC side, and vice−versa.
The NLSX3373 translator has open−drain outputs with integrated
10 kW pullup resistors on the I/O lines. The integrated pullup
resistors are used to pullup the I/O lines to either VL or VCC. The
NLSX3373 is an excellent match for open−drain applications such as
the I2C communication bus.
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MARKING
DIAGRAM
UDFN8
MU SUFFIX
CASE 517AJ
8
1
VBM
G
VB = Specific Device Code
M = Date Code
G
= Pb−Free Package
Features
• Wide High−Side VCC Operating Range: 1.65 V to 4.5 V
Wide Low−Side VL Operating Range: 1.2 V to 4.1 V
• High−Speed with 20 Mb/s Guaranteed Date Rate for VL > 2.5 V
• Low Bit−to−Bit Skew
• Enable Input and I/O Lines have Overvoltage Tolerant (OVT) to
•
•
•
•
4.5 V
Nonpreferential Powerup Sequencing
Integrated 10 kW Pullup Resistors
Small Space Saving Package − 1.8 x 1.2 x 0.5 mm UDFN8
This is a Pb−Free Device
LOGIC DIAGRAM
VL
EN
VCC GND
I/O VL1
I/O VCC1
I/O VL2
I/O VCC2
Typical Applications
• I2C, SMBus, PMBus
• Low Voltage ASIC Level Translation
• Mobile Phones, PDAs, Cameras
PIN ASSIGNMENT
Important Information
VL
1
8
VCC
I/O VL1
2
7
I/O VCC1
I/O VL2
3
6
I/O VCC2
GND
4
5
EN
• ESD Protection for Power, Enable and I/O Pins:
Human Body Model (HBM): $7.5 kV
Machine Model (MM): 400 V
(Top View)
ORDERING INFORMATION
Device
NLSX3373MUTAG
Package
Shipping†
UDFN8 3000/Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2008
July, 2008 − Rev. 5
1
Publication Order Number:
NLSX3373/D
NLSX3373
VL
VCC
One−Shot
Block
PU1
One−Shot
Block
PU2
Gate
Bias
RPullup
10 kW
RPullup
10 kW
I/O VL
I/O VCC
N
Figure 1. Block Diagram (1 I/O Line)
PIN ASSIGNMENT
Pins
FUNCTION TABLE
Description
EN
Operating Mode
VCC
VCC Input Voltage
L
Hi−Z
VL
VL Input Voltage
H
I/O Buses Connected
GND
Ground
EN
Output Enable
I/O VCCn
VCC I/O Port, Referenced to VCC
I/O VLn
VL I/O Port, Referenced to VL
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NLSX3373
MAXIMUM RATINGS
Symbol
Parameter
Value
Condition
Unit
VCC
High−side DC Supply Voltage
−0.3 to +7.0
V
VL
High−side DC Supply Voltage
−0.3 to +7.0
V
I/O VCC
VCC−Referenced DC Input/Output Voltage
−0.3 to (VCC + 0.3)
V
I/O VL
VL−Referenced DC Input/Output Voltage
−0.3 to (VL + 0.3)
V
VEN
Enable Control Pin DC Input Voltage
−0.3 to +7.0
V
II/O_SC
Short−Circuit Duration (I/O VL and I/O VCC to GND)
TSTG
Storage Temperature
40
Continuous
mA
−65 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
VCC
High−side Positive DC Supply Voltage
1.65
4.5
V
VL
High−side Positive DC Supply Voltage
1.2
4.1
V
VEN
Enable Control Pin Voltage
GND
4.5
V
VIO
Enable Control Pin Voltage
GND
4.5
V
TA
Operating Temperature Range
−40
+85
°C
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NLSX3373
DC ELECTRICAL CHARACTERISTICS (VCC = 1.65 V to 4.5 V and VL = 1.2 V to 4.1 V, unless otherwise specified)
−405C to +855C
Symbol
Parameter
Test Conditions
Min
Typ
(Notes 1, 2)
Max
Unit
VCC − 0.4
−
−
V
VIHC
I/O VCC Input HIGH Voltage
VILC
I/O VCC Input LOW Voltage
−
−
0.15
V
VIHL
I/O VL Input HIGH Voltage
VL − 0.2
−
−
V
VILL
I/O VL Input LOW Voltage
−
−
0.15
V
VIH
Control Pin Input HIGH Voltage
VL − 0.2
−
−
V
VIL
Control Pin Input LOW Voltage
−
−
0.15
V
VOHC
I/O VCC Output HIGH Voltage
I/O VCC Source Current = 20 mA
2/3 * VCC
−
−
V
VOLC
I/O VCC Output LOW Voltage
I/O VCC Sink Current = 20 mA
−
−
1/3 * VCC
V
VOHL
I/O VL Output HIGH Voltage
I/O VL Source Current = 20 mA
2/3 * VL
−
−
V
VOLL
I/O VL Output LOW Voltage
I/O VL Sink Current = 20 mA
−
−
1/3 * VL
V
IQVCC
VCC Supply Current
I/O VCC and I/O VL Unconnected,
VEN = VL
−
45
75
mA
VL Supply Current
I/O VCC and I/O VL Unconnected,
VEN = VL
−
1.0
5.0
mA
VCC Tristate Output Mode Supply Current
I/O VCC and I/O VL Unconnected,
VEN = GND
−
0.1
2.5
mA
VL Tristate Output Mode Supply Current
I/O VCC and I/O VL Unconnected,
VEN = GND
−
0.1
2.5
mA
IQVL
ITS−VCC
ITS−VL
IOZ
I/O Tristate Output Mode Leakage Current
TA = +25°C
−
−
2.5
mA
RPU
Pullup Resistor I/O VL and VCC
TA = +25°C
−
10
−
kW
1. Typical values are for VCC = +2.8 V, VL = +1.8 V and TA = +25°C.
2. All units are production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.
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NLSX3373
TIMING CHARACTERISTICS − RAIL−TO−RAIL DRIVING CONFIGURATIONS
(I/O test circuit of Figures 2 and 3, CLOAD = 15 pF, driver output impedance v 50 W, RLOAD = 1 MW)
−405C to +855C
(Notes 3 and 4)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
+1.2 v VL v VCC v +4.5 V
tRVCC
I/O VCC Risetime
25
ns
tFVCC
I/O VCC Falltime
37
ns
tRVL
I/O VL Risetime
30
ns
tFVL
I/O VL Falltime
30
ns
tPDVL−VCC
Propagation Delay (Driving I/O VL)
30
ns
tPDVCC−VL
Propagation Delay (Driving I/O VCC)
30
ns
Part−to−Part Skew
20
nS
tPPSKEW
Maximum Data Rate
8
Mb/s
+1.2 v VL v VCC v +3.3 V
tRVCC
I/O VCC Risetime
25
ns
tFVCC
I/O VCC Falltime
30
ns
tRVL
I/O VL Risetime
30
ns
tFVL
I/O VL Falltime
30
ns
tPDVL−VCC
Propagation Delay (Driving I/O VL)
20
ns
tPDVCC−VL
Propagation Delay (Driving I/O VCC)
20
ns
Part−to−Part Skew
10
nS
tPPSKEW
Maximum Data Rate
10
Mb/s
+1.8 v VL v VCC v +2.5 V
tRVCC
I/O VCC Risetime
15
ns
tFVCC
I/O VCC Falltime
15
ns
tRVL
I/O VL Risetime
15
ns
tFVL
I/O VL Falltime
15
ns
tPDVL−VCC
Propagation Delay (Driving I/O VL)
15
ns
tPDVCC−VL
Propagation Delay (Driving I/O VCC)
15
ns
Part−to−Part Skew
10
nS
tPPSKEW
Maximum Data Rate
16
Mb/s
+2.5 v VL v VCC v +3.3 V
tRVCC
I/O VCC Risetime
15
ns
tFVCC
I/O VCC Falltime
15
ns
tRVL
I/O VL Risetime
15
ns
tFVL
I/O VL Falltime
15
ns
tPDVL−VCC
Propagation Delay (Driving I/O VL)
15
ns
tPDVCC−VL
Propagation Delay (Driving I/O VCC)
15
ns
Part−to−Part Skew
10
nS
tPPSKEW
Maximum Data Rate
20
3. Typical values are for VCC = +3.3 V, VL = +1.8 V and TA = +25°C.
4. All units are production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.
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5
Mb/s
NLSX3373
TIMING CHARACTERISTICS − OPEN DRAIN DRIVING CONFIGURATIONS
(I/O test circuit of Figures 4 and 5, CLOAD = 15 pF, driver output impedance v 50 W, RLOAD = 1 MW)
−405C to +855C
(Notes 5 and 6)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
+1.2 v VL v VCC v +4.5 V
tRVCC
I/O VCC Risetime
400
ns
tFVCC
I/O VCC Falltime
50
ns
tRVL
I/O VL Risetime
400
ns
tFVL
I/O VL Falltime
60
ns
tPDVL−VCC
Propagation Delay (Driving I/O VL)
1000
ns
tPDVCC−VL
Propagation Delay (Driving I/O VCC)
1000
ns
50
nS
tPPSKEW
MDR
Part−to−Part Skew
Maximum Data Rate
2
Mb/s
5. Typical values are for VCC = +3.3 V, VL = +1.8 V and TA = +25°C.
6. All units are production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design. Limits over the operating
temperature range are guaranteed by design.
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NLSX3373
TEST SETUPS
NLSX3373
VL
VCC
NLSX3373
VL
EN
Source
I/O VL
I/O VCC
I/O VL
I/O VCC
CLOAD
CLOAD
RLOAD
NLSX3373
Figure 3. Rail−to−Rail Driving I/O VCC
I/O VCC
I/O VL
CLOAD
I/O VCC
VCC
CLOAD
RLOAD
Figure 4. Open−Drain Driving I/O VL
Figure 5. Open−Drain Driving I/O VCC
tRISE/FALL v
3 ns
tPD_VL−VCC
I/O VCC
VCC
EN
RLOAD
I/O VL
NLSX3373
VL
VCC
EN
90%
50%
10%
Source
RLOAD
Figure 2. Rail−to−Rail Driving I/O VL
VL
VCC
EN
I/O VCC
tRISE/FALL v 3 ns
90%
50%
10%
tPD_VCC−VL
I/O VL
tPD_VL−VCC
90%
50%
10%
tPD_VCC−VL
90%
50%
10%
tF−VCC
tR−VCC
tF−VL
Figure 6. Definition of Timing Specification Parameters
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tR−VL
NLSX3373
VCC
PULSE
GENERATOR
2xVCC
OPEN
R1
DUT
RT
CL
Test
RL
Switch
tPZH, tPHZ
Open
tPZL, tPLZ
2 x VCC
CL = 15 pF or equivalent (Includes jig and probe capacitance)
RL = R1 = 50 kW or equivalent
RT = ZOUT of pulse generator (typically 50 W)
Figure 7. Test Circuit for Enable/Disable Time Measurement
tR
tF
Input
tPLH
Output
90%
50%
10%
tR
EN
VCC
90%
50%
10%
tPHL
GND
VL
50%
tPZL
Output
50%
tPZH
tF
Output
50%
GND
tPLZ
tPHZ
HIGH
IMPEDANCE
10%
VOL
90%
VOH
Figure 8. Timing Definitions for Propagation Delays and Enable/Disable Measurement
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8
HIGH
IMPEDANCE
NLSX3373
APPLICATIONS INFORMATION
Level Translator Architecture
Enable Input (EN)
The NLSX3373 auto sense translator provides
bi−directional voltage level shifting to transfer data in
multiple supply voltage systems. This device has two
supply voltages, VL and VCC, which set the logic levels on
the input and output sides of the translator. When used to
transfer data from the VL to the VCC ports, input signals
referenced to the VL supply are translated to output signals
with a logic level matched to VCC. In a similar manner, the
VCC to VL translation shifts input signals with a logic level
compatible to VCC to an output signal matched to VL.
The NLSX3373 consists of two bi−directional channels
that independently determine the direction of the data flow
without requiring a directional pin. The one−shot circuits
are used to detect the rising or falling input signals. In
addition, the one shots decrease the rise and fall time of the
output signal for high−to−low and low−to−high transitions.
Each input/output channel has an internal 10 kW pull.
The magnitude of the pullup resistors can be reduced by
connecting external resistors in parallel to the internal
10 kW resistors.
The NLSX3373 has an Enable pin (EN) that provides
tri−state operation at the I/O pins. Driving the Enable pin
to a low logic level minimizes the power consumption of
the device and drives the I/O VCC and I/O VL pins to a high
impedance state. Normal translation operation occurs
when the EN pin is equal to a logic high signal. The EN pin
is referenced to the VL supply and has Overvoltage
Tolerant (OVT) protection.
Power Supply Guidelines
During normal operation, supply voltage VL should be
less than or equal to VCC. The sequencing of the power
supplies will not damage the device during the power up
operation.
The enable pin should be used to enter the low current
tri−state mode, rather than setting either the VL or VCC
supplies to 0 V. The NLSX3373 will not be damaged if
either VL or VCC is equal to 0 V while the other supply
voltage is at a nominal operating value; however, the
operation of the translator cannot be guaranteed during
single supply operation.
For optimal performance, 0.01 mF to 0.1 mF decoupling
capacitors should be used on the VL and VCC power supply
pins. Ceramic capacitors are a good design choice to filter
and bypass any noise signals on the voltage lines to the
ground plane of the PCB. The noise immunity will be
maximized by placing the capacitors as close as possible to
the supply and ground pins, along with minimizing the
PCB connection traces.
Input Driver Requirements
The rise (tR) and fall (tF) timing parameters of the open
drain outputs depend on the magnitude of the pull−up
resistors. In addition, the propagation times (tPD), skew
(tPSKEW) and maximum data rate depend on the impedance
of the device that is connected to the translator. The timing
parameters listed in the data sheet assume that the output
impedance of the drivers connected to the translator is less
than 50 kW.
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NLSX3373
PACKAGE DIMENSIONS
UDFN8 1.8 x 1.2, 0.4P
CASE 517AJ−01
ISSUE O
PIN ONE
REFERENCE
ÏÏ
ÏÏ
0.10 C
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.15 AND 0.30 mm FROM TERMINAL TIP.
4. MOLD FLASH ALLOWED ON TERMINALS
ALONG EDGE OF PACKAGE. FLASH MAY
NOT EXCEED 0.03 ONTO BOTTOM
SURFACE OF TERMINALS.
5. DETAIL A SHOWS OPTIONAL
CONSTRUCTION FOR TERMINALS.
A B
D
0.10 C
L1
E
DETAIL A
NOTE 5
TOP VIEW
(A3)
0.05 C
DIM
A
A1
A3
b
b2
D
E
e
L
L1
L2
A
0.05 C
SIDE VIEW
e/2
(b2)
A1
e
1
4
8
5
C
SEATING
PLANE
DETAIL A
8X
L
(L2)
BOTTOM VIEW
MILLIMETERS
MIN
MAX
0.45
0.55
0.00
0.05
0.127 REF
0.15
0.25
0.30 REF
1.80 BSC
1.20 BSC
0.40 BSC
0.45
0.55
0.00
0.03
0.40 REF
MOUNTING FOOTPRINT
SOLDERMASK DEFINED
8X b
0.10
M
C A B
0.05
M
C
8X
0.66
7X
0.22
NOTE 3
1.50
1
0.32
0.40 PITCH
DIMENSIONS: MILLIMETERS
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to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any
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damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over
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