TXB0104NMNR [TI]
具有自动方向感应和 +/-15kV ESD 保护的 4 位双向电压电平转换器 | NMN | 12 | -40 to 85;
| 型号： | TXB0104NMNR |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 具有自动方向感应和 +/-15kV ESD 保护的 4 位双向电压电平转换器 | NMN | 12 | -40 to 85 驱动 接口集成电路 转换器 电平转换器 驱动程序和接口 |
| 文件： | 总12页 (文件大小：135K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
FEATURES
•
1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V on
B Port (VCCA ≤ VCCB
•
ESD Protection Exceeds JESD 22
– A Port
)
•
VCC Isolation Feature – If Either VCC Input Is
at GND, All Outputs Are in the
High-Impedance State
• 2500-V Human-Body Model (A114-B)
• 200-V Machine Model (A115-A)
• 1500-V Charged-Device Model (C101)
– B Port
•
•
•
OE Input Circuit Referenced to VCCA
Low Power Consumption, 4-µA Max ICC
• ±15-kV Human-Body Model (A114-B)
• 200-V Machine Model (A115-A)
• 1500-V Charged-Device Model (C101)
Ioff Supports Partial-Power-Down Mode
Operation
•
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
GXU OR ZXU PACKAGE
(BOTTOM VIEW)
TERMINAL ASSIGNMENTS
(GXU/ZXU Package)
A
B
C
A
B
C
1
2
3
4
A1
A2
A3
A4
VCCB
VCCA
OE
B1
B2
B3
B4
1
2
3
4
GND
RGY PACKAGE
(TOP VIEW)
D OR PW PACKAGE
(TOP VIEW)
V
V
CCB
CCA
A1
A2
A3
A4
1
2
3
4
5
6
7
14
B1
B2
B3
B4
13
12
11
10
9
1
14
A1
A2
A3
A4
NC
13 B1
2
3
4
5
6
12
11
10
9
B2
B3
B4
NC
NC
NC
OE
GND
8
7
8
NC − No internal connection
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
This 4-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to
track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB
accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation
between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes. VCCA should not exceed VCCB
.
When the output-enable (OE) input is low, all outputs are placed in the high-impedance state.
The TXB0104 is designed so that the OE input circuit is supplied by VCCA
.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
To ensure the high-impedance state during power up or power down, OE should be tied to GND through a
pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the
driver.
ORDERING INFORMATION
TA
PACKAGE(1)
ORDERABLE PART NUMBER
TXB0104GXUR
TOP-SIDE MARKING
_ _ _
UFBGA – GXU
Tape and reel
_
UFBGA – ZXU (Pb-Free)
QFN – RGY
TXB0104ZXUR
–40°C to 85°C
Tape and reel
Tape and reel
Tape and reel
TXB0104RGYR
SOIC – D
TXB0104DR
TSSOP – PW
TXB0104PWR
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
PIN DESCRIPTION
D, PW, OR RGY
PIN NO.
GXU OR ZXU
BALL NO.
NAME
FUNCTION
1
2
3
4
5
6
7
B2
A1
A2
A3
A4
VCCA
A1
A-port supply voltage 1.2 V ≤ VCCA ≤ 3.6 V and VCCA ≤ VCCB.
Input/output 1. Referenced to VCCA
Input/output 2. Referenced to VCCA
Input/output 3. Referenced to VCCA
Input/output 4. Referenced to VCCA
.
.
.
.
A2
A3
A4
NC
GND
No connection. Not internally connected.
Ground
B4
B3
3-state output-mode enable. Pull OE low to place all outputs in
3-state mode. Referenced to VCCA
8
OE
.
9
NC
B4
No connection. Not internally connected.
10
11
12
13
14
C4
C3
C2
C1
B1
Input/output 4. Referenced to VCCB
Input/output 3. Referenced to VCCB
Input/output 2. Referenced to VCCB
Input/output 1. Referenced to VCCB
.
.
.
.
B3
B2
B1
VCCB
B-port supply voltage 1.65 V ≤ VCCB ≤ 5.5 V.
2
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
Absolute Maximum Ratings(1)
over operating free-air temperature range (unless otherwise noted)
MIN
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
MAX
4.6
UNIT
VCCA
Supply voltage range
VCCB
V
6.5
VI
Input voltage range(2)
Voltage range applied to any output in the high-impedance or power-off state(2)
6.5
V
V
VO
6.5
A port
Voltage range applied to any output in the high or low state(2)(3)
B port
VCCA + 0.5
VCCB + 0.5
–50
VO
V
IIK
IOK
IO
Input clamp current
VI < 0
mA
mA
mA
mA
Output clamp current
VO < 0
–50
Continuous output current
±50
Continuous current through VCCA, VCCB, or GND
±100
86
D package(4)
GXU/ZXU package(4)
PW package(4)
RGY package(5)
TBD
113
θJA
Package thermal impedance
Storage temperature range
°C/W
°C
47
Tstg
–65
150
(1) 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 under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The value of VCCA and VCCB are provided in the recommended operating conditions table.
(4) The package thermal impedance is calculated in accordance with JESD 51-7.
(5) The package thermal impedance is calculated in accordance with JESD 51-5.
Recommended Operating Conditions(1)(2)
VCCA
VCCB
MIN
MAX UNIT
VCCA
VCCB
1.2
3.6
V
Supply voltage
1.65
5.5
Data inputs
OE
1.2 V to 3.6 V
1.2 V to 3.6 V
1.2 V to 5.5 V
1.2 V to 3.6 V
1.2 V to 3.6 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 3.6 V
4.5 V to 5.5 V
VCCI × 0.65(3)
VCCI
VIH
VIL
High-level input voltage
Low-level input voltage
V
VCCA × 0.65
5.5
Data inputs
OE
0
0
VCCI × 0.35(3)
V
VCCA × 0.35
40
A-port inputs
Input transition
rise or fall rate
∆t/∆v
40 ns/V
30
B-port inputs
1.2 V to 3.6 V
TA
Operating free-air temperature
–40
85
°C
(1) The A and B sides of an unused data I/O pair must be held in the same state, i.e., both at VCCI or both at GND.
(2) VCCA must be less than or equal to VCCB and must not exceed 3.6 V.
(3) VCCI is the supply voltage associated with the input port.
3
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
Electrical Characteristics(1)(2)
over recommended operating free-air temperature range (unless otherwise noted)
TA = 25°C
–40°C to 85°C
TEST
CONDITIONS
PARAMETER
VCCA
VCCB
UNIT
MIN
TYP
MAX
MIN
MAX
1.2 V
1.1
VOHA
IOH = –20 µA
IOL = 20 µA
V
V
1.4 V to 3.6 V
1.2 V
VCCA – 0.4
0.9
VOLA
1.4 V to 3.6 V
0.4
VOHB
VOLB
II
IOH = –20 µA
IOL = 20 µA
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
0 V to 5.5 V
0 V
VCCB – 0.4
V
V
0.4
±2
±2
±2
±2
OE
1.2 V to 3.6 V
0 V
±1
±1
±1
±1
µA
A port
B port
A or B port
Ioff
µA
µA
0 V to 3.6 V
1.2 V to 3.6 V
1.2 V
IOZ
OE = GND
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
0 V
0.06
3.4
1.4 V to 3.6 V
3.6 V
5
2
VI = VCCI or GND,
IO = 0
ICCA
µA
µA
0 V
5.5 V
-2
1.2 V
1.65 V to 5.5 V
1.65 V to 5.5 V
0 V
1.4 V to 3.6 V
3.6 V
5
-2
2
VI = VCCI or GND,
IO = 0
ICCB
0 V
5.5 V
1.2 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
3.5
VI = VCCI or GND,
IO = 0
ICCA + ICCB
µA
µA
1.4 V to 3.6 V
1.2 V
10
5
VI = VCCI or GND,
IO = 0,
OE = GND
0.05
ICCZA
1.4 V to 3.6 V
1.2 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
VI = VCCI or GND,
IO = 0,
OE = GND
3.3
ICCZB
µA
1.4 V to 3.6 V
1.2 V to 3.6 V
5
Ci
OE
3
5
4
6
pF
pF
A port
B port
Cio
1.2 V to 3.6 V
1.65 V to 5.5 V
11
14
(1) VCCI is the supply voltage associated with the input port.
(2) VCCO is the supply voltage associated with the output port.
Timing Requirements
TA = 25°C, VCCA = 1.2 V
VCCB = 1.8 V
VCCB = 2.5 V
TYP
VCCB = 3.3 V
TYP
VCCB = 5 V
TYP
UNIT
TYP
20
Data rate
20
50
20
50
20 Mbps
tw
Pulse duration
Data inputs
50
50
ns
Timing Requirements
over recommended operating free-air temperature range, VCCA = 1.5 V ± 0.1 V (unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
Data rate
40
40
40
40 Mbps
ns
tw
Pulse duration
Data inputs
25
25
25
25
4
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
Timing Requirements
over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V (unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
Data rate
60
60
60
60 Mbps
ns
tw
Pulse duration
Data inputs
17
17
17
17
Timing Requirements
over recommended operating free-air temperature range, VCCA = 2.5 V ± 0.2 V (unless otherwise noted)
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
UNIT
MIN
MAX
100
MIN
MAX
100
MIN
MAX
Data rate
100 Mbps
ns
tw
Pulse duration
Data inputs
10
10
10
Timing Requirements
over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (unless otherwise noted)
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
UNIT
MIN
MAX
MIN
MAX
100
Data rate
100
Mbps
ns
tw
Pulse duration
Data inputs
10
10
Switching Characteristics
TA = 25°C, VCCA = 1.2 V
VCCB = 1.8 V
VCCB = 2.5 V
VCCB = 3.3 V
VCCB = 5 V
FROM
PARAMETER
TO
(OUTPUT)
UNIT
ns
(INPUT)
TYP
6.9
7.4
1
TYP
5.7
6.4
1
TYP
5.3
6
TYP
5.5
5.8
1
A
B
A
A
B
A
B
tpd
B
1
ten
OE
OE
µs
1
1
1
1
18
20
4.2
2.1
0.4
20
15
17
4.2
1.5
0.5
20
14
16
4.2
1.2
0.5
20
14
16
4.2
1.1
1.4
20
tdis
ns
trA, tfA
trB, tfB
A-port rise and fall times
B-port rise and fall times
Channel-to-channel skew
ns
ns
tSK(O)
ns
Max data rate
Mbps
5
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
Switching Characteristics
over recommended operating free-air temperature range, VCCA = 1.5 V ± 0.1 V (unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
MIN
1.4
MAX
12.9
14.2
1
MIN
1.2
MAX
10.1
12
MIN
1.1
MAX
10
MIN MAX
A
B
B
A
A
B
A
B
0.8
0.3
9.9
13.7
1
tpd
ten
tdis
ns
µs
ns
0.9
0.7
0.4
11.7
1
1
OE
OE
1
1
1
1
5.9
5.4
1.4
0.9
31
5.7
4.9
1.4
0.6
25.9
22.8
5.1
3.2
0.5
5.6
4.8
1.4
0.5
23
5.7
4.9
1.4
0.4
22.4
19.5
5.1
2.7
0.5
30.3
5.1
4.5
0.5
20
trA, tfA
trB, tfB
A-port rise and fall times
5.1
2.8
0.5
ns
ns
B-port rise and fall times
Channel-to-channel skew
tSK(O)
ns
Max data rate
40
40
40
40
Mbps
Switching Characteristics
over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V (unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
MIN
1.6
MAX
11
MIN
1.4
MAX
7.7
8.4
1
MIN
1.3
1
MAX
6.8
7.6
1
MIN
1.2
MAX
A
B
B
A
A
B
A
B
6.5
7.1
1
tpd
ten
tdis
ns
µs
ns
1.5
12
1.3
0.9
1
OE
OE
1
1
1
1
5.9
5.4
1
31
5.1
4.4
1.1
0.6
21.3
20.8
4.1
3.2
0.5
5
4.2
1.1
0.5
19.3
17.9
4.1
2.8
0.5
5
4.3
1.1
0.4
17.4
16.3
4.1
2.7
0.5
30.3
4.2
3.8
0.5
trA, tfA
trB, tfB
A-port rise and fall times
ns
ns
B-port rise and fall times
Channel-to-channel skew
0.9
tSK(O)
ns
Max data rate
60
60
60
60
Mbps
6
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
Switching Characteristics
over recommended operating free-air temperature range, VCCA = 2.5 V ± 0.2 V (unless otherwise noted)
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
MIN
1.1
MAX
MIN
1
MAX
MIN
0.9
MAX
A
B
B
A
A
B
A
B
6.3
6.6
1
5.2
5.1
1
4.7
4.4
1
tpd
ten
tdis
ns
µs
ns
1.2
1.1
0.9
OE
OE
1
1
1
5.1
4.4
0.8
0.7
21.3
20.8
3
4.6
3.8
0.8
0.5
15.2
16
3
4.6
3.9
0.8
0.4
13.2
13.9
3
trA, tfA
trB, tfB
A-port rise and fall times
ns
ns
B-port rise and fall times
Channel-to-channel skew
2.6
0.5
2.8
0.5
2.7
0.5
tSK(O)
ns
Max data rate
100
100
100
Mbps
Switching Characteristics
over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (unless otherwise noted)
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
MIN
0.9
1
MAX
MIN
MAX
A
B
B
A
A
B
A
B
4.7
4.9
1
0.8
0.9
4
3.8
1
tpd
ten
tdis
ns
µs
ns
OE
OE
1
1
4.6
3.8
0.7
0.5
15.2
16
4.3
3.4
0.7
0.4
12.1
13.2
2.5
2.7
0.5
trA, tfA
trB, tfB
A-port rise and fall times
2.5
2.1
0.5
ns
ns
B-port rise and fall times
Channel-to-channel skew
tSK(O)
ns
Max data rate
100
100
Mbps
7
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
Operating Characteristics
TA = 25°C
VCCA
1.2 V
5 V
1.2 V
1.8 V
1.5 V
1.8 V
1.8 V
VCCB
2.5 V
2.5 V
2.5 V
5 V
3.3 V
PARAMETER
TEST CONDITIONS
UNIT
3.3 V
to
1.8 V
5 V
TYP
TYP
TYP
TYP
TYP
TYP
TYP
A-port input, B-port output
B-port input, A-port output
A-port input, B-port output
B-port input, A-port output
A-port input, B-port output
B-port input, A-port output
A-port input, B-port output
B-port input, A-port output
7.8
12
10
11
9
11
8
11
8
11
8
11
9
11
CL = 0, f = 10 MHz,
tr = tf = 1 ns,
OE = VCCA
(outputs enabled)
CpdA
CpdB
CpdA
CpdB
pF
pF
38.1
25.4
0.01
0.01
0.01
0.01
28
28
28
29
29
29
19
18
18
19
21
22
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.03
0.04
CL = 0, f = 10 MHz,
tr = tf = 1 ns,
OE = GND
(outputs disabled)
8
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
PRINCIPLES OF OPERATION
Applications
The TXB0104 can be used in level-translation applications for interfacing devices or systems operating at
different interface voltages with one another.
Architecture
The TXB0104 architecture (see Figure 1) does not require a direction-control signal to control the direction of
data flow from A to B or from B to A. In a dc state, the output drivers of the TXB0104 can maintain a high or low,
but are designed to be weak, so that they can be overdriven by an external driver when data on the bus starts
flowing the opposite direction.
The output one shots detect rising or falling edges on the A or B ports. During a rising edge, the one shot turns
on the PMOS transistors (T1, T3) for a short duration, which speeds up the low-to-high transition. Similarly,
during a falling edge, the one shot turns on the NMOS transistors (T2, T4) for a short duration, which speeds up
the high-to-low transition.
V
CCA
V
CCB
One
T1
Shot
4k
One
T2
Shot
A
B
One
T3
Shot
4k
One
T4
Shot
Figure 1. Architecture of TXB0104 I/O Cell
Input Driver Requirements
Typical IIN vs VIN characteristics of the TXB0104 are shown in Figure 2. For proper operation, the device driving
the data I/Os of the TXB0104 must have drive strength of at least ±2 mA.
9
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
PRINCIPLES OF OPERATION (continued)
I
IN
V /4 kW
T
V
IN
–(V – V )/4 kW
D
T
A.
B.
V
V
is the input threshold voltage of the TXB0104 (typically V /2).
CCI
T
is the supply voltage of the external driver.
D
Figure 2. Typical IIN vs VIN Curve
Power Up
During operation, ensure that VCCA ≤ VCCB at all times. During power-up sequencing, VCCA ≥ VCCB does not
damage the device, so any power supply can be ramped up first. The TXB0104 has circuitry that disables all
output ports when either VCC is switched off (VCCA/B = 0 V).
Enable and Disable
The TXB0104 has an OE input that is used to disable the device by setting OE = low, which places all I/Os in
the high-impedance (Hi-Z) state. The disable time (tdis) indicates the delay between when OE goes low and
when the outputs acutally get disabled (Hi-Z). The enable time (ten) indicates the amount of time the user must
allow for the one-shot circuitry to become operational after OE is taken high.
Pullup or Pulldown Resistors on I/O Lines
The TXB0104 is designed to drive capacitive loads of up to 70 pF. The output drivers of the TXB0104 have low
dc drive strength. If pullup or pulldown resistors are connected externally to the data I/Os, their values must be
kept higher than 50 kΩ to ensure that they do not contend with the output drivers of the TXB0104.
For the same reason, the TXB0104 should not be used in applications such as I2C, 1-Wire, or an MMC card
interface where an open-drain driver is connected on the bidirectional data I/O. For these applications, use a
device from the TI TXS01xx series of level translators.
10
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TXB0104
4-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
WITH AUTO DIRECTION SENSING AND ±15-kV ESD PROTECTION
www.ti.com
SCES650–APRIL 2006
PARAMETER MEASUREMENT INFORMATION
2 × V
CCO
S1
50 kW
Open
From Output
Under Test
From Output
Under Test
15 pF
1 MW
15 pF
50 kW
TEST
/t
S1
2 × V
LOAD CIRCUIT FOR
ENABLE/DISABLE
TIME MEASUREMENT
LOAD CIRCUIT FOR MAX DATA RATE,
PULSE DURATION PROPAGATION
DELAY OUTPUT RISE AND FALL TIME
MEASUREMENT
t
PZL PLZ
CCO
t
/t
Open
PHZ PZH
V
CCI
Input
V
CCI
/2
V
CCI
/2
0 V
t
t
PLH
PHL
t
w
V
V
OH
0.9 y V
CCO
V
CCI
Output
V
/2
V
/2
CCO
CCO
0.1 y V
CCO
V
CCI
/2
V
CCI
/2
OL
Input
t
f
t
r
0 V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
A. C includes probe and jig capacitance.
L
B. All input pulses are supplied by generators having the following characteristics: PRRv10 MHz, Z = 50 Ω, dv/dt ≥ 1 V/ns.
O
C. The outputs are measured one at a time, with one transition per measurement.
D.
E.
F.
t
V
V
and t
are the same as t .
PLH
PHL pd
is the V associated with the input port.
CC
CCI
is the V associated with the output port.
CCO
CC
G. All parameters and waveforms are not applicable to all devices.
Figure 3. Load Circuits and Voltage Waveforms
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