FAIRCHILD FXLA108

FXLA108
Low-Voltage Dual-Supply 8-Bit Voltage Translator with
Configurable Voltage Supplies and Signal Levels,
3-State Outputs, and Auto Direction Sensing
Features
Description
ƒ
Bi-Directional Interface between Two Levels:
from 1.1V to 3.6V
ƒ
ƒ
Fully Configurable: Inputs and Outputs Track VCC
ƒ
Outputs Remain in 3-State Until Active VCC Level is
Reached
The FXLA108 is a configurable dual-voltage supply
translator for both uni-directional and bi-directional
voltage translation between two logic levels. The device
allows translation between voltages as high as 3.6V to
as low as 1.1V. The A port tracks the VCCA level and the
B port tracks the VCCB level. This allows for bi-directional
voltage translation over a variety of voltage levels: 1.2V,
1.5V, 1.8V, 2.5V, and 3.3V.
ƒ
ƒ
ƒ
Outputs Switch to 3-State if Either VCC is at GND
ƒ
ƒ
ƒ
ƒ
Control Input (/OE) Referenced to VCCA Voltage
ƒ
ESD Protection Exceeds:
- 8kV HBM
(per JESD22-A114 &Mil Std 883e 3015.7)
- 2kV CDM (per ESD STM 5.3)
Non-Preferential Power-Up; Either VCC May Be
Powered Up First
Power-Off Protection
Bus-Hold on Data Inputs Eliminates the Need for
Pull-Up Resistors
Packaged in 20-Terminal DQFN (2.5mm x 4.5mm)
Direction Control Not Necessary
100Mbps Throughput when Translating Between
1.8V and 2.5V
The device remains in three-state until both VCCs reach
active levels, allowing either VCC to be powered up first.
Internal power-down control circuits place the device in
3-state if either VCC is removed.
The /OE input, when HIGH, disables both the A and B
ports by placing them in a 3-state condition. The /OE
input is supplied by VCCA.
The FXLA108 supports bi-directional translation without
the need for a direction control pin. The two ports of the
device have auto-direction sense capability. Either port
may sense an input signal and transfer it as an output
signal to the other port.
Applications
ƒ
ƒ
Laptops, Notebooks,
Routers, Switches
Ordering Information
Part Number
FXLA108BQX
Operating
Temperature
Range
Eco
Status
Package
Packing
Method
-40 to 85°C
Green
20-Terminal DQFN 2.5mm x 4.5mm Package
Tape and Reel
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2009 Fairchild Semiconductor Corporation
FXLA108 • Rev. 1.0.0
www.fairchildsemi.com
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
March 2009
VCCA VCCB
20
1
A0 2
19 B0
A1 3
18 B1
A2 4
17 B2
A3 5
16 B3
A4 6
15 B4
A5 7
14 B5
A6 8
13 B6
A7 9
12 B7
10
11
GND /OE
Figure 1. Pin Configuration (Top Through View)
Pin Definitions
Pin #
Name
Description
1
VCCA
2
A0
A-Side Inputs or 3-State Outputs
3
A1
A-Side Inputs or 3-State Outputs
4
A2
A-Side Inputs or 3-State Outputs
5
A3
A-Side Inputs or 3-State Outputs
6
A4
A-Side Inputs or 3-State Outputs
7
A5
A-Side Inputs or 3-State Outputs
8
A6
A-Side Inputs or 3-State Outputs
9
A7
A-Side Inputs or 3-State Outputs
10
GND
11
/OE
12
B7
B-Side Inputs or 3-State Outputs
13
B6
B-Side Inputs or 3-State Outputs
14
B5
B-Side Inputs or 3-State Outputs
15
B4
B-Side Inputs or 3-State Outputs
16
B3
B-Side Inputs or 3-State Outputs
17
B2
B-Side Inputs or 3-State Outputs
18
B1
B-Side Inputs or 3-State Outputs
19
B0
B-Side Inputs or 3-State Outputs
20
VCCB
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Pin Configuration
A-Side Power Supply
Ground
Output Enable Input
B-Side Power Supply
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
2
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Functional Diagram
Figure 2. Functional Diagram
Functional Table
Control
Outputs
/OE
LOW Logic Level
Normal Operation
HIGH Logic Level
3-State
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
3
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only.
Symbol
VCC
Parameter
Supply Voltage
VI
DC Input Voltage
VO
Output Voltage
(2)
IIK
DC Input Diode Current
IOK
DC Output Diode Current
IOH/IOL
ICC
TSTG
Conditions
Min.
Max.
VCCA
-0.5
4.6
VCCB
-0.5
4.6
I/O Ports A and B
-0.5
4.6
Control Input (/OE)
-0.5
4.6
Output 3-State
-0.5
4.6
Output Active (An)
-0.5
VCCA +0.5
Output Active (Bn)
-0.5
VCCB +0.5
VI<0V
-50
VO<0V
-50
VO>VCC
+50
DC Output Source/Sink Current
V
V
V
mA
mA
-50
+50
mA
±100
mA
-65
+150
°C
DC VCC or Ground Current (per Supply Pin)
Storage Temperature Range
Unit
Notes:
1. IO absolute maximum ratings must be observed.
2. All unused inputs and input/outputs must be held at VCCi or GND.
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Absolute Maximum Ratings
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
Parameter
VCC
Power Supply
VIN
Input Voltage
TA
Operating Temperature, Free Air
dt/dV
Minimum Input Edge Rate
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
Conditions
Operating VCCA or VCCB
Ports A and B
Control Input (/OE)
VCCA/B = 1.1 to 3.6V
Min.
Max.
Unit
1.1
3.6
V
0
3.6
V
0
VCCA
V
-40
+85
°C
10
ns/V
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4
The recommended power-up sequence is:
FXL translators offer an advantage in that either VCC
may be powered up first. This benefit derives from the
chip design. When either VCC is at 0V, outputs are in a
high-impedance state. The control input (/OE) is
designed to track the VCCA supply. A pull-up resistor
tying /OE to VCCA should be used to ensure that bus
contention, excessive currents, or oscillations do not
occur during power-up or power-down. The size of the
pull-up resistor is based upon the current-sinking
capability of the device driving the /OE pin.
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
1.
2.
3.
Apply power to the first VCC.
Apply power to the second VCC.
Drive the /OE input LOW to enable the device.
The recommended power-down sequence is:
1.
2.
3.
Drive /OE input HIGH to disable the device.
Remove power from either VCC.
Remove power from other VCC.
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Power-Up/Power-Down Sequence
www.fairchildsemi.com
5
TA=-40 to 85°C.
Symbol
Parameter
Conditions
Data Inputs An
Control Pin /OE
VIHA
High-Level Input
Voltage
VCCA (V)
VCCB (V)
2.70 to 3.60
2.00
2.30 to 2.70
1.60
1.65 to 2.30 1.10 to 3.60
.65xVCCA
1.40 to 1.65
.65xVCCA
1.10 to 1.40
.90xVCCA
2.70 to 3.60
2.00
2.30 to 2.70
Data Inputs Bn
VIHB
Data Inputs An
Control Pin /OE
VILA
Low-Level Input Voltage
VILB
VOHA
VOHB
VOLA
VOLB
II(HOLD)
Data Inputs Bn
Min.
Typ.
Max.
V
1.60
1.65 to 2.30 1.10 to 3.60
.65xVCCB
1.40 to 1.65
.65xVCCB
1.10 to 1.40
.90xVCCB
V
2.70 to 3.60
.80
2.30 to 2.70
.70
1.65 to 2.30 1.10 to 3.60
.35xVCCA
1.40 to 1.65
.35xVCCA
1.10 to 1.40
.10xVCCA
2.70 to 3.60
.80
2.30 to 2.70
.70
1.65 to 2.30 1.10 to 3.60
.35xVCCB
1.40 to 1.65
.35xVCCB
1.10 to 1.40
.10xVCCB
High-Level Output
(3)
Voltage
IOH=-4µA
1.10 to 3.60 1.10 to 3.60 VCCA - .40
IOH=-4µA
1.10 to 3.60 1.10 to 3.60 VCCB - .40
Low-Level Output
(3)
Voltage
IOL=4µA
1.10 to 3.60 1.10 to 3.60
.4
IOL=4µA
1.10 to 3.60 1.10 to 3.60
.4
Bus-Hold Input
Minimum Drive Current
Units
VIN=0.80V
3.00
3.00
75.0
VIN=2.00V
3.00
3.00
-75.0
VIN=0.7V
2.30
2.30
45.0
VIN=1.60V
2.30
2.30
-45.0
V
V
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
DC Electrical Characteristics
V
VIN=0.57V
1.65
1.65
25.0
VIN=1.07V
1.65
1.65
-25.0
VIN=0.49V
1.40
1.40
11.0
VIN=0.91V
1.40
1.40
-11.0
VIN=0.11V
1.10
1.10
4.0
VIN=0.99V
1.10
1.10
-4.0
V
µA
Continued on following page…
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
6
TA=-40 to 85°C.
Symbol
II(ODH)
II(ODL)
II
IOFF
IOZ
ICCA/B
ICCZ
Parameter
Bus-Hold Input
Overdrive High
(4)
Current
Conditions
VCCA (V)
VCCB (V)
Min.
3.60
3.60
450.00
2.70
2.70
300.00
1.95
1.95
200.00
1.60
1.60
120.00
1.40
1.40
80.00
3.60
3.60
-450.00
2.70
2.70
-300.00
1.95
1.95
-200.00
1.60
1.60
-120.00
1.40
1.40
-80.00
1.10 to 3.60
3.60
An VO=0V to 3.6V
0
3.6
±2.0
Bn VO=0V to 3.6V
3.60
0
±2.0
An, Bn VO=0V or 3.6V,
/OE=VIH
3.6
3.60
±5.0
An VO=0V or 3.6V,
/OE=GND
3.60
0
±5.0
Bn VO=0V or 3.6V,
/OE=GND
0
3.60
±5.0
Data Inputs An, Bn
Bus-Hold Input
Overdrive Low
(5)
Current
Data Inputs An, Bn
Input Leakage Current
Control Inputs /OE,
VI=VCCA or GND
Power-Off Leakage
Current
3-State Output
Leakage
Quiescent Supply
(6, 7)
Current
ICCA
Quiescent Supply
Current
ICCB
Max.
Units
µA
µA
±1.0
µA
µA
µA
VI=VCCI or GND; IO=0,
/OE=GND
1.10 to 3.60 1.10 to 3.60
10.0
µA
VI=VCCI or GND; IO=0,
/OE=VIH
1.10 to 3.60 1.10 to 3.60
10.0
µA
VI=VCCB or GND; IO=0
B-to-A Direction,
/OE=GND
0
VI=VCCA or GND; IO=0
A-to-B Direction
1.10 to 3.60
0
10.0
VI=VCCA or GND; IO=0,
A-to-B Direction,
/OE=GND
1.10 to 3.60
0
-10.0
VI=VCCB or GND; IO=0
B-to-A Direction
0
1.10 to 3.60
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
DC Electrical Characteristics (Continued)
-10.0
µA
µA
1.10 to 3.60
10.0
Notes:
3. This is the output voltage for static conditions. Dynamic drive specifications are given in the Dynamic Output
Electrical Characteristics table.
4. An external drive must source at least the specified current to switch LOW-to-HIGH.
5. An external drive must source at least the specified current to switch HIGH-to-LOW.
6. VCCI is the VCC associated with the input side.
7. Reflects current per supply, VCCA or VCCB.
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
7
A Port (An)
Output Load: CL=15pF, RL ≥ MΩ (CI/O=4pF), TA=-40 to 85°C
Symbol
Parameter
VCCA=3.0V
to 3.6V
Typ.
Max.
VCCA=2.3V
to 2.7V
Typ.
VCCA=1.65V
to 1.95V
Max.
Typ.
Max
VCCA=1.4V
to 1.6V
Typ.
VCCA=1.1V
to 1.3V
Max.
Typ.
Units
trise
Output Rise
(9)
Time A Port
3.0
3.5
4.0
5.0
7.5
ns
tfall
Output Fall
Time A
(10)
Port
3.0
3.5
4.0
5.0
7.5
ns
IOHD
Dynamic
Output
Current
(9)
High
-11.4
-7.5
-4.7
-3.2
-1.7
mA
IOLD
Dynamic
Output
Current
(10)
Low
+11.4
+7.5
+4.7
+3.2
+1.7
mA
VCCB=1.1V
to 1.3V
Units
B Port (Bn)
Output Load: CL=15pF, RL ≥ MΩ (CI/O=5pF), TA=-40 to 85°C
Symbol
Parameter
VCCB=3.0V
to 3.6V
Typ.
Max.
VCCB=2.3V
to 2.7V
Typ.
VCCB=1.65V
to 1.95V
Max.
Typ.
Max
VCCB=1.4V
to 1.6V
Typ.
Max.
Typ.
trise
Output Rise
(9)
Time B Port
3.0
3.5
4.0
5.0
7.5
ns
tfall
Output Fall
Time B
(10)
Port
3.0
3.5
4.0
5.0
7.5
ns
IOHD
Dynamic
Output
Current
(9)
High
-12.0
-7.9
-5.0
-3.4
-1.8
mA
IOLD
Dynamic
Output
Current
(10)
Low
+12.0
+7.9
+5.0
+3.4
+1.8
mA
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Dynamic Output Electrical Characteristic
Notes:
8. Dynamic output characteristics are guaranteed, but not tested.
9. See Figure 7.
10. See Figure 8.
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
8
VCCA = 3.0V to 3.6V, TA=-40 to 85°C
Symbol
Parameter
VCCB=3.0V
to 3.6V
Min.
tPLH,tPHL
Max.
VCCB=2.3V
to 2.7V
Min.
VCCB=1.65V
to 1.95V
Max.
Min.
Max
VCCB=1.4V
to 1.6V
Min.
Max.
VCCB=1.1V
to 1.3V
Units
Typ.
A to B
0.2
4.0
0.3
4.2
0.5
5.4
0.6
6.8
6.9
ns
B to A
0.2
4.0
0.2
4.1
0.3
5.0
0.5
6.0
4.5
ns
tPZL,tPZH
/OE to A,
/OE to B
1.7
1.7
1.7
1.7
1.7
µs
tSKEW
A Port,
(11)
B Port
0.5
0.5
0.5
1.0
1.0
ns
VCCB=1.1V
to 1.3V
Units
VCCA = 2.3V to 2.7V, TA=-40 to 85°C
Symbol
tPLH,tPHL
Parameter
VCCB=3.0V
to 3.6V
VCCB=2.3V
to 2.7V
VCCB=1.65V
to 1.95V
VCCB=1.4V
to 1.6V
Min.
Max.
Min.
Max.
Min.
Max
Min.
Max.
Typ.
A to B
0.2
4.1
0.4
4.5
0.5
5.6
0.8
6.9
7.0
ns
B to A
0.3
4.2
0.4
4.5
0.5
5.5
0.5
6.5
4.8
ns
tPZL,tPZH
/OE to A,
/OE to B
1.7
1.7
1.7
1.7
1.7
µs
tSKEW
A Port,
(11)
B Port
0.5
0.5
0.5
1.0
1.0
ns
VCCB=1.1V
to 1.3V
Units
VCCA = 1.65V to 1.95V, TA=-40 to 85°C
Symbol
tPLH,tPHL
Parameter
VCCB=3.0V
to 3.6V
VCCB=2.3V
to 2.7V
VCCB=1.65V
to 1.95V
VCCB=1.4V
to 1.6V
Min.
Max.
Min.
Max.
Min.
Max
Min.
Max.
Typ.
A to B
0.3
5.0
0.5
5.5
0.8
6.7
0.9
7.5
7.5
ns
B to A
0.5
5.4
0.5
5.6
0.8
6.7
1.0
7.0
5.4
ns
tPZL,tPZH
/OE to A,
/OE to B
1.7
1.7
1.7
1.7
1.7
µs
tSKEW
A Port,
(11)
B Port
0.5
0.5
0.5
1.0
1.0
ns
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
AC Characteristics
Note:
11. Skew is the variation of propagation delay between output signals and applies only to output signals on the
same port An or Bn) and switching with the same polarity (LOW-to-HIGH or HIGH-to-LOW) (see Figure 10).
Skew is guaranteed, but not tested.
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
9
VCCA = 1.4V to 1.6V, TA=-40 to 85°C
Symbol
VCCB=3.0V
to 3.6V
Parameter
Min.
tPLH,tPHL
Max.
VCCB=2.3V
to 2.7V
Min.
VCCB=1.65V
to 1.95V
Max.
Min.
Max
VCCB=1.4V
to 1.6V
Min.
Max.
VCCB=1.1V
to 1.3V
Units
Typ.
A to B
0.5
6.0
0.5
6.5
1.0
7.0
1.0
8.5
7.9
ns
B to A
0.6
6.8
0.8
6.9
0.9
7.5
1.0
8.5
6.1
ns
tPZL,tPZH
/OE to A,
/OE to B
1.7
1.7
1.7
1.7
1.7
µs
tSKEW
A Port,
(12)
B Port
1.0
1.0
1.0
1.0
1.0
ns
Units
VCCA = 1.1V to 1.3V, TA=-40 to 85°C
Symbol
tPLH,tPHL
tPZL,tPZH
tSKEW
Parameter
VCCB=3.0V
to 3.6V
VCCB=2.3V
to 2.7V
VCCB=1.65V
to 1.95V
VCCB=1.4V
to 1.6V
VCCB=1.1V
to 1.3V
Typ.
Typ.
Typ.
Typ.
Typ.
A to B
4.6
4.8
5.4
6.2
9.2
ns
B to A
6.8
7.0
7.4
7.8
9.1
ns
1.7
1.7
1.7
1.7
1.7
µs
1.0
1.0
1.0
1.0
1.0
ns
/OE to A, /OE to B
A Port, B Port
(12)
Note:
12. Skew is the variation of propagation delay between output signals and applies only to output signals on the
same port (An or Bn) and switching with the same polarity (LOW-to-HIGH or HIGH-to-LOW) (see Figure 10).
Skew is guaranteed, but not tested.
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
AC Characteristics (Continued)
www.fairchildsemi.com
10
TA=-40 to 85°C.
VCCB=3.0V
to 3.6V
VCCB=2.3V
to 2.7V
VCCB=1.65V
to 1.95V
VCCB=1.4V
to 1.6V
VCCB=1.1V to
1.3V
Min.
Min.
Min.
Min.
Typ.
VCCA=3.00V to 3.60V
140
120
100
80
40
Mbps
VCCA=2.30V to 2.70V
120
120
100
80
40
Mbps
VCCA=1.65V to 1.95V
100
100
80
60
40
Mbps
VCCA=1.40V to 1.60V
80
80
60
60
40
Mbps
Typ.
Typ.
Typ.
Typ.
Typ.
40
40
40
40
40
VCCA
VCCA=1.10V to 1.30V
Units
Mbps
Notes:
13. Maximum data rate is guaranteed, but not tested.
14. Maximum data rate is specified in megabits per second (see Figure 9). It is equivalent to two times the F-toggle
frequency, specified in megahertz. For example, 100Mbps is equivalent to 50MHz.
Capacitance
Symbol
Parameter
Conditions
CIN
Input Capacitance Control Pin (/OE)
An
CI/O
Input/Output Capacitance
Cpd
Power Dissipation Capacitance
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
Bn
VCCA=VCCB=GND
VCCA=VCCB=3.3V, /OE=VCCA
VCCA=VCCB=3.3V, VI=0V or VCC, f=10MHz
TA=+25°C
Typical
Units
3
pF
4
5
25
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Maximum Data Rate(13, 14)
pF
pF
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11
VCC
TEST
SIGNAL
DUT
C1
R1
Figure 3. Test Circuit
Table 1.
Table 2.
AC Test Conditions
Test
Input Signal
Output Enable Control
tPLH, tPHL
Data Pulses
0V
tPZL
0V
HIGH to LOW Switch
tPZH
VCCI
HIGH to LOW Switch
AC Load
VCCo
C1
R1
1.2V± 0.1V
15pF
1MΩ
1.5V± 0.1V
15pF
1MΩ
1.8V ± 0.15V
15pF
1MΩ
2.5V ± 0.2V
15pF
1MΩ
3.3V ± 0.3V
15pF
1MΩ
DATA
IN
Vmi
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Test Diagrams
VCCI
GND
tpxx
tpxx
DATA
OUT
Vmo
VCCO
Figure 4. Waveform for Inverting and Non-Inverting Functions
Notes:
15. Input tR = tF = 2.0ns, 10% to 90%.
16. Input tR = tF = 2.5ns, 10% to 90%, at VI = 3.0V to 3.6V only.
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
12
Notes:
17. Input tR = tF = 2.0ns, 10% to 90%.
18. Input tR = tF = 2.5ns, 10% to 90%, at VI = 3.0V to 3.6V only.
Figure 6. 3-State Output High Enable Time for Low Voltage Logic
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Figure 5. 3-State Output Low Enable Time for Low Voltage Logic
Notes:
19. Input tR = tF = 2.0ns, 10% to 90%.
20. Input tR = tF = 2.5ns, 10% to 90%, at VI = 3.0V to 3.6V only.
Table 3.
Test Measure Points
Symbol
VMI
VDD
(21)
VCCI /2
VMO
VCCo /2
VX
0.9 x VCCo
VY
0.1 x VCCo
Note:
21. VCCI=VCCA for control pin /OE or VMI=(VCCA/2).
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
13
VOH
80% x VCCO
VOUT
20% x VCCO
VOL
Time
IOHD ≈ (CL + CI / O ) ×
ΔVOUT
(20% − 80%) • VCCO
= (CL + CI / O ) ×
Δt
t RISE
Figure 7. Active Output Rise Time and Dynamic Output Current High
VOH
tfall
80% x VCCO
VOUT
20% x VCCO
VOL
Time
IOLD ≈ (CL + CI / O ) ×
Figure 8.
ΔVOUT
(80% − 20%) • VCCO
= (CL + CI / O ) ×
Δt
t FALL
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
trise
Active Output Fall Time and Dynamic Output Current Low
tW
VCCI
DATA
IN
VCCI/2
VCCI/2
GND
Maximum Data Rate, f = 1/tW
Figure 9.
Maximum Data Rate
VCCO
DATA
OUTPUT
Vmo
Vmo
GND
tskew
tskew
VCCO
DATA
OUTPUT
Vmo
Vmo
GND
Figure 10.
Output Skew Time
Note:
22. tSKEW = (tpHLmax – tpHLmin) or (tpLHmax – tpLHmin)
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
14
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
Physical Dimensions
Figure 11. 20-Terminal DQFN 2.5mm x 4.5mm Package
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify
or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically
the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
15
FLXA108 — Low-Voltage Dual-Supply 8-Bit Voltage Translator
© 2009 Fairchild Semiconductor Corporation
FLXA108 • Rev. 1.0.0
www.fairchildsemi.com
16