SN74AVC8T245QPWRQ1 [TI]
8-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS;
| 型号： | SN74AVC8T245QPWRQ1 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 8-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS 输出元件 |
| 文件： | 总22页 (文件大小：681K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN74AVC8T245-Q1
www.ti.com
SCES785A –DECEMBER 2008–REVISED JUNE 2011
8-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
Check for Samples: SN74AVC8T245-Q1
1
FEATURES
•
Qualified for Automotive Applications
Control Inputs VIH/VIL Levels Are Referenced to
VCCA Voltage
VCC Isolation Feature – If Either VCC Input Is at
GND, All I/O Ports Are in the High-Impedance
State
Ioff Supports Partial Power-Down-Mode
Operation
Each Port to Operate Over the Full 1.4-V to
3.6-V Power-Supply Range
I/Os Are 4.6-V Tolerant
Max Data Rates
•
•
•
•
–
–
170 Mbps (VCCA < 1.8 V or VCCB < 1.8 V)
320 Mbps (VCCA ≥ 1.8 V and VCCB ≥ 1.8 V)
•
•
•
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
Fully Configurable Dual-Rail Design Allows
RHL PACKAGE
(TOP VIEW)
PW PACKAGE
(TOP VIEW)
V
V
CCB
1
2
24
23
22
21
20
19
18
17
16
15
14
13
CCA
V
CCB
DIR
A1
3
OE
B1
B2
B3
B4
B5
B6
B7
B8
GND
1
24
4
A2
23
22
21
20
19
18
17
16
15
14
2
VCCB
OE
B1
DIR
A1
5
A3
3
6
A4
A5
7
4
A2
8
A6
5
B2
A3
9
A7
6
B3
A4
A8
10
11
12
7
B4
A5
GND
GND
8
B5
A6
9
B6
A7
10
11
B7
A8
B8
GND
12
13
DESCRIPTION/ORDERING INFORMATION
This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74AVC8T245
is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 V. 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 1.2 V to 3.6 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, and 3.3-V voltage nodes.
The SN74AVC8T245 is designed for asynchronous communication between data buses. The device transmits
data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the
direction-control (DIR) input. The output-enable (OE) input can be used to disable the outputs so the buses are
effectively isolated.
The SN74AVC8T245 is designed so the control pins (DIR and OE) are supplied by VCCA
.
The SN74AVC8T245 solution is compatible with a single-supply system and can be replaced later with a '245
function, with minimal printed circuit board redesign.
1
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 © 2008–2011, 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.
SN74AVC8T245-Q1
SCES785A –DECEMBER 2008–REVISED JUNE 2011
www.ti.com
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.
The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION(1)
TA
PACKAGE(2)
Reel of 1000
Reel of 2000
ORDERABLE PART NUMBER
TOP-SIDE MARKING
WE245Q
WE245Q
QFN – RHL
CAVC8T245QRHLRQ1
–40°C to 125°C
TSSOP – PW
SN74AVC8T245QPWRQ1
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
FUNCTION TABLE
(each 8-bit section)
INPUTS
OPERATION
OE
L
DIR
L
B data to A bus
A data to B bus
All outputs Hi-Z
L
H
H
X
LOGIC DIAGRAM (POSITIVE LOGIC)
2
3
DIR
A1
22
OE
B1
21
To Seven Other Channels
2
Copyright © 2008–2011, Texas Instruments Incorporated
SN74AVC8T245-Q1
www.ti.com
SCES785A –DECEMBER 2008–REVISED JUNE 2011
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
VCCA
Supply voltage range
VCCB
–0.5 V to 4.6 V
I/O ports (A port)
Input voltage
–0.5 V to 4.6 V
–0.5 V to 4.6
VI
I/O ports (B port)
Control inputs
A port
range(2)
–0.5 V to 4.6 V
–0.5 V to 4.6 V
Voltage range
applied to any
output in the
high-impedance
or power-off
state(2)
VO
B port
–0.5 V to 4.6 V
Voltage range
applied to any
output in the
high or low
A port
B port
–0.5 V to (VCCA + 0.5) V
–0.5 V to (VCCB + 0.5) V
VO
state(2) (3)
Input clamp
current
IIK
IOK
IO
VI < 0
–50 mA
–50 mA
Output clamp
current
VO < 0
Continuous output current
±50 mA
±100 mA
39.3°C/W
–65°C to 150°C
8000 V
Continuous current through VCCA, VCCB, or GND
Package thermal impedance(4)
Storage temperature range
θJA
Tstg
Human-Body Model (HBM)
Machine Model (MM)
200 V
Electrostatic
discharge
ESD
CAVC8T245QRHLRQ1
SN74AVC8T245QPWRQ1
1000 V
750 V
Charged-Device Model (CDM )
(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 voltage and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The output positive-voltage rating may be exceeded up to 4.6 V maximum if the output current rating is observed.
(4) The package thermal impedance is calculated in accordance with JESD 51-5.
Copyright © 2008–2011, Texas Instruments Incorporated
3
SN74AVC8T245-Q1
SCES785A –DECEMBER 2008–REVISED JUNE 2011
www.ti.com
RECOMMENDED OPERATING CONDITIONS(1) (2) (3)
VCCI
VCCO
MIN
MAX UNIT
VCCA
VCCB
Supply voltage
Supply voltage
1.2
3.6
3.6
V
V
1.2
1.2 V to 1.95 V
1.95 V to 2.7 V
2.7 V to 3.6 V
1.2 V to 1.95 V
1.95 V to 2.7 V
2.7 V to 3.6 V
1.2 V to 1.95 V
1.95 V to 2.7 V
2.7 V to 3.6 V
1.2 V to 1.95 V
1.95 V to 2.7 V
2.7 V to 3.6 V
VCCI × 0.65
High-level input
voltage
VIH
VIL
VIH
VIL
Data inputs
Data inputs
1.6
2
V
V
V
V
VCCI × 0.35
Low-level input
voltage
0.7
0.8
VCCA × 0.65
High-level input
voltage
DIR
1.6
2
(referenced to VCCA
)
)
VCCA × 0.35
Low-level input
voltage
DIR
0.7
0.8
3.6
VCCO
3.6
–3
–6
–8
–9
–12
3
(referenced to VCCA
VI
Input voltage
0
0
0
V
V
Active state
3-state
VO
Output voltage
1.2 V
1.4 V to 1.6 V
1.65 V to 1.95 V
2.3 V to 2.7 V
3 V to 3.6 V
1.2 V
IOH
High-level output current
Low-level output current
mA
mA
1.4 V to 1.6 V
1.65 V to 1.95 V
2.3 V to 2.7 V
3 V to 3.6 V
6
IOL
8
9
12
5
Δt/Δv
Input transition rise or fall rate
Operating free-air temperature
ns/V
TA
–40
125
°C
(1) VCCI is the VCC associated with the input port.
(2) VCCO is the VCC associated with the output port.
(3) All unused data inputs of the device must be held at VCCI or GND to ensure proper device operation. See the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
4
Copyright © 2008–2011, Texas Instruments Incorporated
SN74AVC8T245-Q1
www.ti.com
SCES785A –DECEMBER 2008–REVISED JUNE 2011
ELECTRICAL CHARACTERISTICS(1) (2)
over recommended operating free-air temperature range (unless otherwise noted)
TA = 25°C
–40°C to 125°C
PARAMETER
TEST CONDITIONS
VCCA
VCCB
UNIT
MIN
TYP
MAX
MIN
MAX
IOH = –100 μA
1.2 V to 3.6 V
1.2 V
1.2 V to 3.6 V
1.2 V
VCCO – 0.2
IOH = –3 mA
IOH = –6 mA
IOH = –8 mA
IOH = –9 mA
IOH = –12 mA
IOL = 100 μA
IOL = 3 mA
0.95
1.4 V
1.4 V
1.00
1.2
VOH
VI = VIH
V
1.65 V
2.3 V
1.65 V
2.3 V
1.75
2.3
3 V
3 V
1.2 V to 3.6 V
1.2 V
1.2 V to 3.6 V
1.2 V
0.2
0.15
IOL = 6 mA
1.4 V
1.4 V
0.35
0.45
0.55
0.7
VOL
VI = VIL
V
IOL = 8 mA
1.65 V
2.3 V
1.65 V
2.3 V
IOL = 9 mA
IOL = 12 mA
3 V
3 V
Control
inputs
II
VI = VCCA or GND
1.2 V to 3.6 V
1.2 V to 3.6 V
±0.025 ±0.25
±1
μA
μA
0 V
0 V to 3.6 V
0 V
±0.1
±0.1
±1
±1
±5
±5
A or B
port
Ioff
VI or VO = 0 to 3.6 V
0 V to 3.6 V
VO = VCCO or GND,
VI = VCCI or GND,
OE = VIH
IOZ
A or B
port
3.6 V
3.6 V
±0.5
±2.5
±5
μA
μA
(3)
1.2 V to 3.6 V
0 V
1.2 V to 3.6 V
3.6 V
15
–2
15
15
15
–2
25
ICCA
VI = VCCI or GND(4), IO = 0
3.6 V
0 V
1.2 V to 3.6 V
0 V
1.2 V to 3.6 V
3.6 V
ICCB
VI = VCCI or GND(4), IO = 0
μA
3.6 V
0 V
ICCA + ICCB
VI = VCCI or GND, IO = 0
VI = 3.3 V or GND
1.2 V to 3.6 V
1.2 V to 3.6 V
μA
Control
inputs
Ci
3.3 V
3.3 V
3.3 V
3.3 V
3.5
6
pF
A or B
port
Cio
VO = 3.3 V or GND
pF
(1) VCCO is the VCC associated with the output port.
(2) VCCI is the VCC associated with the input port.
(3) For I/O ports, the parameter IOZ includes the input leakage current.
(4) All unused data inputs of the device must be held at VCCI or GND to ensure proper device operation. See the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
Copyright © 2008–2011, Texas Instruments Incorporated
5
SN74AVC8T245-Q1
SCES785A –DECEMBER 2008–REVISED JUNE 2011
www.ti.com
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 1.2 V (see Figure 10)
VCCB = 1.2 V
VCCB = 1.5 V
VCCB = 1.8 V
VCCB = 2.5 V
VCCB = 3.3 V
FROM
(INPUT)
TO
(OUTPUT)
PARAMETER
UNIT
ns
TYP
3.1
3.1
3.1
3.1
5.3
5.3
5.1
5.1
4.8
4.8
4.7
4.7
TYP
2.6
2.6
2.7
2.7
5.3
5.3
4
TYP
2.5
2.5
2.5
2.5
5.3
5.3
3.5
3.5
4.8
4.8
4.1
4.1
TYP
3
TYP
3.5
3.5
2.3
2.3
5.3
5.3
3.1
3.1
4.8
4.8
5.1
5.1
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPZH
tPZL
tPHZ
tPLZ
tPHZ
tPLZ
A
B
A
A
B
A
B
3
2.4
2.4
5.3
5.3
3.2
3.2
4.8
4.8
4.3
4.3
B
ns
OE
OE
OE
OE
ns
ns
4
4.8
4.8
4
ns
ns
4
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 1.5 V ± 0.1 V (see Figure 10)
VCCB = 1.5 V
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V VCCB = 3.3 V
± 0.2 V ± 0.3 V
VCCB = 1.2 V
FROM
(INPUT)
TO
(OUTPUT)
± 0.1 V
PARAMETER
UNIT
TYP
2.7
2.7
2.6
2.6
3.7
3.7
4.8
4.8
3.1
3.1
4.1
4.1
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
14.7
14.7
14.7
14.7
20.5
20.5
18.6
18.6
20.3
20.3
20.0
20.0
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
13.3
13.3
14.2
14.2
20.5
20.5
17.7
17.7
20.3
20.3
18.6
18.6
MIN MAX MIN MAX
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPZH
tPZL
tPHZ
tPLZ
tPHZ
tPLZ
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
13.9
13.9
13.5
13.5
20.5
20.5
15.1
15.1
20.3
20.3
17.9
17.9
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
17.2
17.2
13.2
13.2
20.5
20.5
14.4
14.4
20.3
20.3
18.9
18.9
A
B
A
A
B
A
B
ns
ns
ns
ns
ns
ns
B
OE
OE
OE
OE
6
Copyright © 2008–2011, Texas Instruments Incorporated
SN74AVC8T245-Q1
www.ti.com
SCES785A –DECEMBER 2008–REVISED JUNE 2011
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V (see Figure 10)
VCCB = 1.5 V VCCB = 1.8 V
± 0.1 V ± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
VCCB = 1.2 V
FROM
(INPUT)
TO
(OUTPUT)
± 0.3 V
PARAMETER
UNIT
TYP
2.5
2.5
2.5
2.5
3
MIN MAX MIN MAX
MIN MAX
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
12.1
12.1
11.8
11.8
17.2
17.2
13.2
13.2
17.7
17.7
15.4
15.4
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPZH
tPZL
tPHZ
tPLZ
tPHZ
tPLZ
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
14.2
14.2
13.3
13.3
17.2
17.2
19.6
19.6
17.7
17.7
18.9
18.9
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
13.0
13.0
13.0
13.0
17.2
17.2
17.0
17.0
17.7
17.7
17.3
17.3
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
12.3
12.3
12.1
12.1
17.2
17.2
14.2
14.2
17.7
17.7
15.8
15.8
A
B
A
A
B
A
B
ns
ns
ns
ns
ns
ns
B
OE
OE
OE
OE
3
4.6
4.6
2.8
2.8
3.9
3.9
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 2.5 V ± 0.2 V (see Figure 10)
VCCB = 1.5 V
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
VCCB = 3.3 V
VCCB = 1.2 V
FROM
(INPUT)
TO
(OUTPUT)
± 0.1 V
± 0.2 V
± 0.3 V
PARAMETER
UNIT
TYP
2.4
2.4
3
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
13.5
13.5
13.9
13.9
13.7
13.7
19.1
19.1
14.2
14.2
17.7
17.7
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
12.1
12.1
12.3
12.3
13.7
13.7
16.5
16.5
14.2
14.2
16.3
16.3
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
10.7
10.7
10.7
10.7
13.7
13.7
13.3
13.3
14.2
14.2
14.2
14.2
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
10.2
10.2
10.4
10.4
13.7
13.7
12.3
12.3
14.2
14.2
12.1
12.1
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPZH
tPZL
tPHZ
tPLZ
tPHZ
tPLZ
A
B
A
A
B
A
B
ns
ns
ns
ns
ns
ns
B
3
2.2
2.2
4.5
4.5
1.8
1.8
3.6
3.6
OE
OE
OE
OE
Copyright © 2008–2011, Texas Instruments Incorporated
7
SN74AVC8T245-Q1
SCES785A –DECEMBER 2008–REVISED JUNE 2011
www.ti.com
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (see Figure 10)
VCCB = 1.5 V
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
VCCB = 3.3 V
VCCB = 1.2 V
FROM
(INPUT)
TO
(OUTPUT)
± 0.1 V
± 0.2 V
± 0.3 V
PARAMETER
UNIT
TYP
2.3
2.3
3.5
3.5
2
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
13.2
13.2
17.2
17.2
12.3
12.3
18.9
18.9
12.3
12.3
17.4
17.4
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
11.1
11.1
12.1
12.1
12.3
12.3
16.1
16.1
12.3
12.3
15.8
15.8
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
10.4
10.4
10.2
10.2
12.3
12.3
13.2
13.2
12.3
12.3
13.7
13.7
MIN
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
MAX
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPZH
tPZL
tPHZ
tPLZ
tPHZ
tPLZ
9.7
9.7
A
B
A
A
B
A
B
ns
ns
ns
ns
ns
ns
9.7
B
9.7
12.3
12.3
12.1
12.1
12.3
12.3
12.6
12.6
OE
OE
OE
OE
2
4.5
4.5
1.7
1.7
3.4
3.4
OPERATING CHARACTERISTICS
TA = 25°C
VCCA
=
VCCA
=
VCCA
=
VCCA
=
VCCA
=
TEST
PARAMETER
VCCB = 1.2 V VCCB = 1.5 V VCCB = 1.8 V VCCB = 2.5 V VCCB = 3.3 V
UNIT
CONDITIONS
TYP
TYP
TYP
TYP
TYP
Outputs
enabled
1
1
1
1
1
A to B
Outputs
1
12
1
1
12
1
1
12
1
1
13
1
1
14
1
CL = 0,
f = 10 MHz,
tr = tf = 1 ns
disabled
(1)
CpdA
pF
Outputs
enabled
B to A
A to B
B to A
Outputs
disabled
Outputs
enabled
12
1
12
1
12
1
13
1
14
1
Outputs
disabled
CL = 0,
f = 10 MHz,
tr = tf = 1 ns
(1)
CpdB
pF
Outputs
enabled
1
1
1
1
1
Outputs
disabled
1
1
1
1
1
(1) Power dissipation capacitance per transceiver
Table 1. Typical Total Static Power Consumption (ICCA + ICCB
)
VCCA
VCCB
UNIT
0 V
0
1.2 V
<0.5
<1
1.5 V
<0.5
<1
1.8 V
<0.5
<1
2.5 V
<0.5
<1
3.3 V
<0.5
1
0 V
1.2 V
1.5 V
1.8 V
2.5 V
3.3 V
<0.5
<0.5
<0.5
<0.5
<0.5
<1
<1
<1
<1
1
μA
<1
<1
<1
<1
<1
1
<1
<1
<1
<1
1
<1
<1
<1
<1
8
Copyright © 2008–2011, Texas Instruments Incorporated
SN74AVC8T245-Q1
www.ti.com
SCES785A –DECEMBER 2008–REVISED JUNE 2011
TYPICAL CHARACTERISTICS
Typical Propagation Delay (A to B) vs Load Capacitance
TA = 25°C, VCCA = 1.2 V
6
5
4
3
2
1
0
V
= 1.2 V
= 1.5 V
= 1.8 V
CCB
V
V
CCB
CCB
V
V
= 2.5 V
= 3.3 V
CCB
CCB
0
10
20
30
40
50
60
C − pF
L
Figure 1.
Typical Propagation Delay (A to B) vs Load Capacitance
TA = 25°C, VCCA = 1.5 V
6
5
4
3
2
1
0
6
5
4
3
2
1
0
V
V
= 1.2 V
= 1.5 V
= 1.8 V
V
V
= 1.2 V
= 1.5 V
= 1.8 V
CCB
CCB
CCB
CCB
CCB
CCB
V
V
V
V
= 2.5 V
= 3.3 V
V
V
= 2.5 V
= 3.3 V
CCB
CCB
CCB
CCB
10
20
30
40
50
60
0
10
20
30
40
50
60
0
C − pF
L
C − pF
L
Figure 2.
Figure 3.
Copyright © 2008–2011, Texas Instruments Incorporated
9
SN74AVC8T245-Q1
SCES785A –DECEMBER 2008–REVISED JUNE 2011
www.ti.com
TYPICAL CHARACTERISTICS (continued)
Typical Propagation Delay (A to B) vs Load Capacitance
TA = 25°C, VCCA = 1.8 V
6
5
4
3
2
1
0
6
5
4
V
V
= 1.2 V
= 1.5 V
= 1.8 V
V
V
= 1.2 V
= 1.5 V
= 1.8 V
CCB
CCB
CCB
CCB
CCB
CCB
V
V
V
V
= 2.5 V
= 3.3 V
V
V
= 2.5 V
= 3.3 V
CCB
CCB
CCB
CCB
3
2
1
0
10
20
30
40
50
60
0
10
20
30
40
50
60
0
C − pF
L
C − pF
L
Figure 4.
Figure 5.
Typical Propagation Delay (A to B) vs Load Capacitance
TA = 25°C, VCCA = 2.5 V
6
5
4
3
2
1
0
6
5
4
3
2
1
0
V
= 1.2 V
V
V
= 1.2 V
= 1.5 V
= 1.8 V
CCB
CCB
V
= 1.5 V
= 1.8 V
CCB
CCB
CCB
CCB
V
V
V
V
= 2.5 V
= 3.3 V
V
V
= 2.5 V
= 3.3 V
CCB
CCB
CCB
CCB
10
20
30
40
50
60
0
10
20
30
40
50
60
0
C − pF
L
C − pF
L
Figure 6.
Figure 7.
10
Copyright © 2008–2011, Texas Instruments Incorporated
SN74AVC8T245-Q1
www.ti.com
SCES785A –DECEMBER 2008–REVISED JUNE 2011
TYPICAL CHARACTERISTICS (continued)
Typical Propagation Delay (A to B) vs Load Capacitance
TA = 25°C, VCCA = 3.3 V
6
5
4
3
2
1
0
6
5
4
V
= 1.2 V
= 1.5 V
= 1.8 V
CCB
V
= 1.2 V
= 1.5 V
= 1.8 V
CCB
V
V
CCB
V
V
CCB
CCB
CCB
V
V
= 2.5 V
= 3.3 V
CCB
V
V
= 2.5 V
= 3.3 V
CCB
CCB
CCB
3
2
1
0
10
20
30
40
50
60
0
10
20
30
40
50
60
0
C − pF
L
C − pF
L
Figure 8.
Figure 9.
Copyright © 2008–2011, Texas Instruments Incorporated
11
SN74AVC8T245-Q1
SCES785A –DECEMBER 2008–REVISED JUNE 2011
www.ti.com
PARAMETER MEASUREMENT INFORMATION
2 × V
CCO
TEST
S1
S1
R
L
Open
GND
t
Open
pd
From Output
Under Test
t
t
/t
/t
2 × V
CCO
GND
PLZ PZL
PHZ PZH
C
L
R
L
(see Note A)
t
w
LOAD CIRCUIT
V
CCI
V
CCI
/2
V
CCI
/2
Input
C
L
V
TP
R
L
V
CCO
0 V
1.2 V
2 kΩ
2 kΩ
2 kΩ
2 kΩ
2 kΩ
0.1 V
0.1 V
0.15 V
0.15 V
0.3 V
15 pF
15 pF
15 pF
15 pF
15 pF
VOLTAGE WAVEFORMS
PULSE DURATION
1.5 V ± 0.1 V
1.8 V ± 0.15 V
2.5 V ± 0.2 V
3.3 V ± 0.3 V
V
CCA
Output
Control
(low-level
enabling)
V /2
CCA
V
CCA
/2
t
0 V
t
PZL
PLZ
V
V
CCO
Output
Waveform 1
V
CCI
V
/2
/2
CCO
Input
V
CCI
/2
V
CCI
/2
V
+ V
OL
TP
S1 at 2 × V
CCO
OL
0 V
(see Note B)
t
t
PZH
PHZ
t
t
PHL
PLH
Output
Waveform 2
S1 at GND
V
OH
V
OH
V
OH
− V
TP
V
CCO
Output
V /2
CCO
V
CCO
/2
(see Note B)
0 V
V
OL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A. C includes probe and jig capacitance.
L
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRRv10 MHz, Z = 50 Ω, dv/dt ≥ 1 V/ns.
O
D. The outputs are measured one at a time, with one transition per measurement.
E.
F.
G.
H.
I.
t
t
t
V
V
and t
and t
and t
are the same as t
.
dis
.
PLZ
PZL
PLH
PHZ
are the same as t
PZH
en
are the same as t .
pd
PHL
is the V associated with the input port.
CC
CCI
is the V associated with the output port.
CCO
CC
Figure 10. Load Circuit and Voltage Waveforms
12
Copyright © 2008–2011, Texas Instruments Incorporated
PACKAGE OPTION ADDENDUM
www.ti.com
2-Jul-2012
PACKAGING INFORMATION
Status (1)
Eco Plan (2)
MSL Peak Temp (3)
Samples
Orderable Device
Package Type Package
Drawing
Pins
Package Qty
Lead/
Ball Finish
(Requires Login)
CAVC8T245QRHLRQ1
ACTIVE
ACTIVE
QFN
RHL
PW
24
24
1000
2000
Green (RoHS
& no Sb/Br)
CU NIPDAU Level-2-260C-1 YEAR
SN74AVC8T245QPWRQ1
TSSOP
Green (RoHS
& no Sb/Br)
CU NIPDAU Level-3-260C-168 HR
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF SN74AVC8T245-Q1 :
Catalog: SN74AVC8T245
•
NOTE: Qualified Version Definitions:
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
2-Jul-2012
Catalog - TI's standard catalog product
•
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
14-Jul-2012
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
B0
K0
P1
W
Pin1
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant
(mm) W1 (mm)
CAVC8T245QRHLRQ1
QFN
RHL
PW
24
24
1000
2000
180.0
330.0
12.4
16.4
3.8
5.8
8.3
1.2
1.6
8.0
8.0
12.0
16.0
Q1
Q1
SN74AVC8T245QPWRQ1 TSSOP
6.95
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
14-Jul-2012
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SPQ
Length (mm) Width (mm) Height (mm)
CAVC8T245QRHLRQ1
QFN
RHL
PW
24
24
1000
2000
210.0
367.0
185.0
367.0
35.0
38.0
SN74AVC8T245QPWRQ1
TSSOP
Pack Materials-Page 2
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