FXL4245MPX [ONSEMI]
低电压双电源 8 位信号转换器，带可配置电压电源和信号电平以及 3 态输出;
| 型号： | FXL4245MPX |
| 厂家： | 
ONSEMI |
| 描述： | 低电压双电源 8 位信号转换器，带可配置电压电源和信号电平以及 3 态输出 接口集成电路 转换器 |
| 文件： | 总13页 (文件大小：657K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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May 2014
FXL4245
Low-Voltage, Dual-Supply, 8-Bit, Signal Translator
with Configurable Voltage Supplies, Signal Levels,
and 3-State Outputs
Features
Description
The FXL4245 is a configurable dual-voltage-supply
translator designed for bi-directional voltage translation
of signals between two voltage levels. The device allows
translation between voltages as high as 3.6 V to as low
as 1.1 V. The A port tracks the VCCA level and the B port
tracks the VCCB level. Both ports are designed to accept
supply voltage levels from 1.1 V to 3.6 V. This allows for
bi-directional voltage translation over a variety of voltage
levels: 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V.
.
Bi-Directional Interface between Two Levels from
1.1 V to 3.6 V
.
.
Fully Configurable, Inputs Track VCC Level
Non-Preferential Power-up; Either VCC May Be
Powered-up First
.
Outputs Remain in 3-State until Active VCC Level is
Reached
.
.
.
Outputs Switch to 3-State if Either VCC is at GND
Power-Off Protection
The device remains in 3-state until both VCCs reach
active levels, allowing either VCC to be powered-up first.
The device also contains power-down control circuits
that place the device in 3-state if either VCC is removed.
Control Inputs (T/R, OE) Levels are Referenced To
VCCA Voltage
The Transmit/Receive (T/R) input determines the
direction of data flow through the device. The OE input,
when HIGH, disables both the A and B ports by placing
them in a 3-state condition. The FXL4245 is designed
.
.
Packaged in 24-Pin MLP
ESD Protection Exceeds:
- 4 kV Human Body Model
(per JESD22-A114 & Mil Std 883e 3015.7)
with the control pins (T/R and OE) supplied by VCCA
.
- 8 kV Human Body Model I/O to GND
(per JESD22-A114 & Mil Std 883e 3015.7)
- 1 kV Charge Device Model (per ESD STM 5.3)
- 200 V Machine Model
(per JESD22-A115 & ESD STM5.2)
Ordering Information
Part Number
Package
Packing Method
FXL4245MPX
24-Pin Molded Leadless Package (MLP), JEDEC MO-220, 3.5 x 4.5 mm
Tape and Reel
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
Pin Configuration
Figure 1. Pin Configuration (Top Through View)
Pin Definitions
Pin #
Name
Description
1
VCCA
Side-A Power Supply
Transmit / Receive Input
Side-A Inputs or 3-State Outputs
Ground
2
T/R
3, 4, 5, 6, 7, 8, 9, 10
A0, A1, A2, A3, A4, A5, A6, A7
11, 12, 13
GND
14, 15, 16, 17, 18, 19, 20, 21
B7, B6, B5, B4, B3, B2, B1, B0
Side-B Inputs or 3-State Outputs
Output Enable Input
Side-B Power Supply
No Connect
22
OE
VCCB
23, 24
DAP
No Connect
Truth Table
Inputs
Description
OE
T/R
LOW Voltage Level
LOW Voltage Level
HIGH Voltage Level
LOW Voltage Level
HIGH Voltage Level
Don’t Care
Bus B Data to Bus A
Bus A Data to Bus B
3-State
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
2
Absolute Maximum Ratings
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
VCCA
Parameter
Conditions
Min. Max. Unit
-0.5
-0.5
-0.5
-0.5
-0.5
-0.5
4.6
4.6
4.6
4.6
4.6
4.6
Supply Voltage
V
VCCB
I/O Port A
I/O Port B
VI
DC Input Voltage
Output Voltage(1)
V
Control Inputs (T/R, OE)
Output 3-State
-0.5 to
VCCA
Output Active (An)
Output Active (Bn)
0.5
0.5
VO
V
-0.5 to
VCCB
IIK
DC Input Diode Current
DC Output Diode Current
VI < 0 V
VO < 0 V
VO > VCC
-50
-50
50
mA
mA
IOK
IOH/IOL
ICC
DC Output Source/Sink Current
DC VCC or Ground Current per Supply Pin
Storage Temperature Range
±50
±100
+150
4
mA
mA
°C
TSTG
-65
Human Body Model,
JESD22-A114, Mil Std 883e 3015.7
I/O to GND
8
kV
V
Electrostatic Discharge
Capability
ESD
Charged Device Model, JESD22-C101,STM 5.3
Machine Model, JESD22-A115,STM 5.2
1
200
Note:
1. I/O absolute maximum ratings must be observed.
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
Conditions
Min. Max. Unit
VCC
Power Supply
Operating VCCA or VCCB
1.1
0
3.6
3.6
V
Port A
VI
Input Voltage
Port B
0
3.6
V
Control Inputs (T/R, OE)
3.0 V to 3.6 V
2.3 V to 2.7 V
0
VCCA
±24
±18
±6
IOH/IOL
Output Current
VCC0
1.65 V to 1.95 V
1.40 V to 1.65 V
1.1 V to 1.4 V
mA
±2
±0.5
+85
10
TA
Operating Temperature, Free Air
Minimum Input Edge Rate
-40
°C
VCCA/B =1.1 V to 3.6 V
ns/V
V/t
Note:
2. All unused inputs must be held at VCCI or GND.
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
3
Electrical Characteristics
Symbol
Parameter
Conditions
VCCI (V)
VCCO (V)
Min.
Max.
Units
2.70 to 3.60
2.30 to 2.70
1.65 to 2.30
1.40 to 1.65
1.10 to 1.40
2.70 to 3.6
2.30 to 2.70
1.65 to 2.30
1.40 to 1.65
1.10 to 1.40
2.70 to 3.60
2.30 to 2.70
1.65 to 2.30
1.40 to 1.65
1.10 to 1.40
2.70 to 3.60
2.30 to 2.70
1.65 to 2.30
1.40 to 1.65
1.10 to 1.40
1.1 to 3.6
2.7
2.0
1.6
Data Inputs An, Bn
1.1 to 3.6
0.65 x VCCI
0.65 x VCCI
0.9 x VCCI
2.0
HIGH Level Input(3)
VIH
V
1.6
Control Pins OE, T/R
(Referenced to VCCA
1.1 to 3.6
1.1 to 3.6
1.1 to 3.6
0.65 x VCCA
0.65 x VCCA
0.9 x VCCA
)
0.8
0.7
Data Inputs An, Bn
0.35 x VCCI
0.35 x VCCI
0.10 x VCCI
0.8
VIL
LOW Level Input(3)
V
0.7
Control Pins /OE, T/R
(Referenced to VCCA
0.35 x VCCI
0.35 x VCCI
0.10 x VCCI
)
I
OH = -100 µA
1.1 to 3.6
2.7
VCC0 - 0.2
2.2
IOH = -12 mA
IOH = -18 mA
IOH = -24 mA
IOH = -6 mA
IOH = -12 mA
IOH = -18 mA
IOH = -6 mA
IOH = -2 mA
IOH = -0.5 mA
3.0
3.0
2.4
3.0
3.0
2.2
2.3
2.3
2.0
VOH
HIGH Level Output(4)
V
2.3
2.3
1.8
2.3
2.3
1.7
1.65
1.65
1.4
1.25
1.4
1.05
1.1
1.1
0.75 x VCC0
I
OL = 100 µA
1.1 to 3.6
2.7
1.1 to 3.6
2.7
0.2
0.4
IOL = 12 mA
IOL = 18 mA
IOL = 24 mA
IOL = 12 mA
IOL = 18 mA
IOL = 6 mA
IOL = 2 mA
IOL = 0.5mA
3.0
3.0
0.4
3.0
3.0
0.55
0.4
VOL
LOW Level Output(4)
2.3
2.3
V
2.3
2.3
0.6
1.65
1.65
1.4
0.3
1.4
0.35
0.3 x VCC0
1.1
1.1
Continued on the following page…
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
4
Electrical Characteristics
Symbol
Parameter
Conditions
VCCI (V)
VCCO (V)
Min.
Max.
Units
Input Leakage
Current, Control Pins
IL
VI=VCCA or GND
1.1 to 3.6
3.6
±1.0
µA
An, VI or VO=0 V to
3.6 V
0
3.6
0
±10
±10
Power Off Leakage
Current
IOFF
µA
µA
Bn, VI or VO=0 V to
3.6 V
3.6
3-State Output
Leakage
(0 VO 3.6 V,
VI=VIH or VIL)
An, Bn, /OE=VIH
3.6
3.6
±10
±10
±10
20
Bn, /OE= Don’t Care(5)
An, /OE= Don’t Care(5)
0
3.6
0
IOZ
3.6
ICCA/B
ICCZ
1.1 to 3.6
1.1 to 3.6
0
1.1 to 3.6
1.1 to 3.6
1.1 to 3.6
0
VI=VCCI or GND; IO=0
VI=VCCA or GND; IO=0
VI=VCCB or GND; IO=0
20
-10
10
Quiescent Supply
Current(6)
ICCA
µA
µA
1.1 to 3.6
1.1 to 3.6
0
0
-10
10
ICCB
1.1 to 3.6
Increase in ICC per
Input; Other Inputs at VIH=3.0
VCC or GND
3.6
3.6
500
ICCA/B
Notes:
3. VCCI = the VCC associated with the data input under test.
4. CCO = the VCC associated with the output under test.
V
5. Don’t care = any valid logic level.
6. Reflects current per supply, VCCA or VCCB
.
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
5
AC Electrical Characteristics
VCCA=3.0 V to 3.6 V
TA= -40 to +85°C
VCCB=3.0 V
to 3.6 V
V
CCB=2.3 V
to 2.7 V
V
CCB=1.65 V
to 1.95 V
V
CCB=1.4 V
to 1.6 V
V
CCB=1.1 V
to 1.3 V
Symbol
tPLH, tPHL
tPZH, tPZL
tPHZ, tPLZ
Parameter
Units
ns
Min.
Max. Min.
Max. Min.
Max. Min.
Max. Min.
Max.
Propagation
Delay A to B
0.2
3.5
3.5
4.0
4.0
3.8
3.7
0.3
0.2
0.7
0.5
0.2
0.2
3.9
3.8
4.4
4.0
4.0
3.7
0.5
0.3
1.0
0.5
0.7
0.2
5.4
4.0
5.9
4.0
4.8
3.7
0.6
0.5
1.0
0.5
1.5
0.2
6.8
4.3
6.4
4.0
6.2
3.7
1.4
0.8
1.5
0.5
2.0
0.2
22.0
Propagation
Delay B to A
0.2
0.5
0.5
0.2
0.2
13.0
17.0
4.0
Output Enable
/OE to B
ns
Output Enable
/OE to A
Output Disable
/OE to B
17.0
3.7
ns
Output Disable
/OE to A
VCCA=2.3 V to 2.7 V
TA= -40 to +85°C
VCCB=3.0 V
to 3.6 V
VCCB=2.3 V
to 2.7 V
VCCB=1.65 V
to 1.95 V
VCCB=1.4 V
to 1.6 V
VCCB=1.1 V
to 1.3 V
Symbol
tPLH, tPHL
tPZH, tPZL
tPHZ, tPLZ
Parameter
Units
ns
Min. Max. Min.
Max. Min.
Max. Min.
5.6 0.8
4.5 0.5
Max. Min.
Max.
Propagation
Delay A to B
0.2
0.3
0.6
0.6
0.2
0.2
3.8
3.9
4.2
4.5
4.1
4.0
0.4
0.4
0.8
0.6
0.2
0.2
4.2
4.2
4.6
4.5
4.3
4.0
0.5
0.5
1.0
0.6
0.7
0.2
6.9
4.8
6.8
4.5
6.7
4.0
1.4
1.0
1.5
0.6
2.0
0.2
22.0
Propagation
Delay B to A
7.0
17.0
4.5
Output Enable
/OE to B
6.0
4.5
4.8
4.0
1.0
0.6
1.5
0.2
ns
Output Enable
/OE to A
Output Disable
/OE to B
17.0
4.0
ns
Output Disable
/OE to A
VCCA=1.65 V to 1.95 V
TA= -40 to +85°C
VCCB=3.0 V
to 3.6 V
VCCB=2.3 V
to 2.7 V
VCCB=1.65 V
to 1.95 V
VCCB=1.4 V
to 1.6 V
VCCB=1.1 V
to 1.3 V
Symbol
tPLH, tPHL
tPZH, tPZL
tPHZ, tPLZ
Parameter
Units
ns
Min. Max. Min.
Max. Min.
Max. Min.
5.7 0.9
5.7 1.0
Max. Min.
Max.
Propagation
Delay A to B
0.3
0.5
0.6
1.0
0.2
0.5
4.0
5.4
5.2
6.7
5.1
5.0
0.5
0.5
0.8
1.0
0.2
0.5
4.5
5.6
5.4
6.7
5.2
5.0
0.8
0.8
1.2
1.0
0.8
0.5
7.1
6.0
7.2
6.7
7.0
5.0
1.5
1.2
1.5
1.0
2.0
0.5
22.0
Propagation
Delay B to A
8.0
18.0
6.7
Output Enable
/OE to B
6.9
6.7
5.2
5.0
1.2
1.0
1.5
0.5
ns
Output Enable
/OE to A
Output Disable
/OE to B
17.0
5.0
ns
Output Disable
/OE to A
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
6
AC Electrical Characteristics (Continued)
VCCA=1.4 V to 1.6 V
TA= -40 to +85°C
VCCB=3.0 V
to 3.6 V
VCCB=2.3 V
to 2.7 V
VCCB=1.65 V
to 1.95 V
VCCB=1.4 V
to 1.6 V
VCCB=1.1 V
to 1.3 V
Symbol
tPLH, tPHL
tPZH, tPZL
tPHZ, tPLZ
Parameter
Units
ns
Min.
Max. Min.
Max. Min.
Max. Min.
6.0 1.0
7.1 1.0
Max. Min.
Max.
Propagation
Delay A to B
0.5
4.3
6.8
7.5
7.5
6.1
6.0
0.5
0.8
1.1
1.0
0.4
1.0
4.8
6.9
7.6
7.5
6.2
6.0
1.0
0.9
1.3
1.0
0.9
1.0
7.3
7.3
7.9
7.5
7.5
6.0
1.5
1.3
2.0
1.0
2.0
1.0
22.0
Propagation
Delay B to A
0.6
1.1
1.0
0.4
1.0
9.5
20.0
7.5
Output Enable
/OE to B
7.7
7.5
6.2
6.0
1.4
1.0
1.5
1.0
ns
Output Enable
/OE to A
Output Disable
/OE to B
18.0
6.0
ns
Output Disable
/OE to A
VCCA=1.1 V to 1.3 V
TA= -40 to +85°C
VCCB=3.0 V
to 3.6 V
VCCB=2.3 V
to 2.7 V
VCCB=1.65 V
to 1.95 V
VCCB=1.4 V
to 1.6 V
VCCB=1.1 V
to 1.3 V
Symbol
tPLH, tPHL
tPZH, tPZL
tPHZ, tPLZ
Parameter
Units
ns
Min. Max. Min.
Max. Min.
Max. Min.
8.0 1.3
22.0 1.5
Max. Min.
Max.
Propagation
Delay A to B
0.8
1.4
1.0
2.0
1.0
2.0
13.0
22.0
12.0
22.0
15.0
15.0
1.0
1.4
1.0
2.0
0.7
2.0
7.0
22.0
9.0
1.2
1.5
2.0
2.0
1.0
2.0
9.5
2.0
2.0
2.0
2.0
2.0
2.0
24.0
Propagation
Delay B to A
22.0
11.0
22.0
10.0
12.0
24.0
24.0
22.0
20.0
12.0
Output Enable
/OE to B
10.0
22.0
8.0
2.0
2.0
2.0
2.0
ns
Output Enable
/OE to A
22.0
7.0
Output Disable
/OE to B
ns
Output Disable
/OE to A
12.0
12.0
Capacitance
TA=+25°C
Symbol
Parameter
Conditions
Units
Typical
CIN
CI/O
CPD
Input Capacitance
VCCA=VCCB=0 V, VI=0 V or VCCA/B
VCCA=VCCB=3.3 V, VI=0 V or VCCA/B
4
5
pF
pF
pF
Input/Output Capacitance
Power Dissipation Capacitance
VCCA=VCCB=3.3 V, VI=0 V or VCC, f=10 MHz
20
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
7
AC Loadings and Waveforms
Figure 2. AC Test Circuit
Switch
Test
tPLH,tPHL
Open
VCC0 • 2 at VCCO=3.3 ± 0.3 V, 2.5 V ± 0.2 V,
1.8 V ± 0.15 V, 1.5 V ± 0.1 V, 1.2 V ± 0.1 V
tPLZ,tPZL
tPHZ,tPZH
GND
Table 1.
AC Load Table
VCC0
CL
RL
Rtr1
2 k
1.2 V ± 0.1 V
15 pF
15 pF
30 pF
30 pF
30 pF
2 k
1.5 V ± 0.1 V
1.8 V ± 0.15 V
2.5 V ± 0.2 V
3.3 V ± 0.3 V
2 k
2 k
500 k
500 k
500 k
500 k
500 k
500 k
Note:
7. Input tR=tF=2.0 ns, 10% to 90%
Note:
8. Input tR=tF=2.0 ns, 10% to 90%
Figure 3. Waveform for Inverting and Non-
Inverting Functions
Figure 4. 3-State Output Low Enable and Disable for Low
Voltage Logic
Note:
9. Input tR=tF=2.0 ns, 10% to 90%
Figure 5. 3-State Output High Enable and Disable for Low Voltage Logic
VCC
Symbol
3.3 V ± 0.3 V
2.5 V ± 0.2 V
VCCI/2
1.8 V ± 0.15 V
VCCI/2
1.5 V ± 0.1 V
VCCI/2
1.2 V ± 0.1 V
VCCI/2
VMI
VMO
VX
VCCI/2
VCCO/2
VCCO/2
VCCO/2
VCCO/2
VCCO/2
VOH - 0.3 V
VOL + 0.3 V
VOH – 0.15 V
VOL + 0.15 V
VOH – 0.15 V
VOL + 0.15 V
VOH – 0.1 V
VOL + 0.1 V
VOH – 0.1 V
VOL + 0.1 V
VY
Note:
10. For VMI VCCO=VCCA for control pins T/R and OE or VCCA/2.
© 2004 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FXL4245 • Rev. 1.0.4
8
Functional Description
Power-Up/Power-Down Sequencing
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 0 V, outputs are in a
High-impedance state. The control inputs (T/R and OE)
are 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/power-down. The size of the pull-
up resistor is based upon the current-sinking capability
of the OE driver.
The recommended power-up sequence is:
1. Apply power to either VCC
.
2. Apply power to the T/R input (logic HIGH for A-to-B
operation; logic LOW for B-to-A operation) and to
the respective data inputs (A port or B port). This
may occur at the same time as step 1.
3. Apply power to the other VCC
.
4. Drive the OE input LOW to enable the device.
The recommended power-down sequence is:
1. Drive OE input HIGH to disable the device.
2. Remove power from either VCC
.
3. Remove power from the other VCC
.
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
9
Physical Dimensions
Figure 6. 24-Pin Molded Leadless Package (MLP), JEDEC MO-220, 3.5 x 4.5 mm
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/.
For current tape and reel specifications, visit Fairchild Semiconductor’s online packaging area:
http://www.fairchildsemi.com/packaging/MLP24B_TNR.pdf.
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
10
© 2004 Fairchild Semiconductor Corporation
FXL4245 • Rev. 1.0.4
www.fairchildsemi.com
11
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