SCES584B JUNE   2005  – November 2014 SN74LVC8T245

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Logic Diagram (Positive Logic)
  5. Revision History
  6. Description (continued)
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1  Absolute Maximum Ratings
    2. 8.2  Handling Ratings
    3. 8.3  Recommended Operating Conditions
    4. 8.4  Thermal Information DB, DBQ and DGV
    5. 8.5  Thermal Information PW and RHL
    6. 8.6  Electrical Characteristics
    7. 8.7  Switching Characteristics, VCCA = 1.8 V ± 0.15 V
    8. 8.8  Switching Characteristics, VCCA = 2.5 V ± 0.2 V
    9. 8.9  Switching Characteristics, VCCA = 3.3 V ± 0.3 V
    10. 8.10 Switching Characteristics, VCCA = 5 V ± 0.5 V
    11. 8.11 Operating Characteristics
    12. 8.12 Typical Characteristics
  9. Parameter Measurement Information
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range
      2. 10.3.2 Ioff Supports Partial-Power-Down Mode Operation
    4. 10.4 Device Functional Modes
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
      3. 11.2.3 Application Curve
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
  14. 14Device and Documentation Support
    1. 14.1 Trademarks
    2. 14.2 Electrostatic Discharge Caution
    3. 14.3 Glossary
  15. 15Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DGV|24
  • DBQ|24
  • RHL|24
  • NS|24
  • DB|24
  • DW|24
  • PW|24
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8 Specifications

8.1 Absolute Maximum Ratings(1)

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
Supply voltage range, VCCA, VCCB –0.5 6.5 V
VI Input voltage range(2) I/O ports (A port) –0.5 6.5 V
I/O ports (B port) –0.5 6.5
Control inputs –0.5 6.5
VO Voltage range applied to any output
in the high-impedance or power-off state(2)
A port –0.5 6.5 V
B port –0.5 6.5
VO Voltage range applied to any output in the high or low state(2)(3) A port –0.5 VCCA + 0.5 V
B port –0.5 VCCB + 0.5
IIK Input clamp current VI < 0 –50 mA
IOK Output clamp current VO < 0 –50 mA
IO Continuous output current ±50 mA
Continuous current through each VCCA, VCCB, and GND ±100 mA
(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 output positive-voltage rating may be exceeded up to 6.5 V maximum if the output current rating is observed.

8.2 Handling Ratings

MIN MAX UNIT
Tstg Storage temperature range –65 150 °C
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) –4000 4000 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) –1000 1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

8.3 Recommended Operating Conditions(1)(2)(3)(4)

VCCI VCCO MIN MAX UNIT
VCCA Supply voltage 1.65 5.5 V
VCCB 1.65 5.5
VIH High-level
input voltage
Data inputs(5) 1.65 V to 1.95 V VCCI  × 0.65 V
2.3 V to 2.7 V 1.7
3 V to 3.6 V 2
4.5 V to 5.5 V VCCI  × 0.7
VIL Low-level
input voltage
Data inputs(5) 1.65 V to 1.95 V VCCI  × 0.35 V
2.3 V to 2.7 V 0.7
3 V to 3.6 V 0.8
4.5 V to 5.5 V VCCI  × 0.3
VIH High-level
input voltage
Control inputs
(referenced to VCCA)(6)
1.65 V to 1.95 V VCCA  × 0.65 V
2.3 V to 2.7 V 1.7
3 V to 3.6 V 2
4.5 V to 5.5 V VCCA  × 0.7
VIL Low-level
input voltage
Control inputs
(referenced to VCCA)(6)
1.65 V to 1.95 V VCCA  × 0.35 V
2.3 V to 2.7 V 0.7
3 V to 3.6 V 0.8
4.5 V to 5.5 V VCCA  × 0.3
VI Input voltage Control inputs 0 5.5 V
VI/O Input/output
voltage
Active state 0 VCCO V
3-State 0 5.5 V
IOH High-level output current 1.65 V to 1.95 V –4 mA
2.3 V to 2.7 V –8
3 V to 3.6 V –24
4.5 V to 5.5 V –32
IOL Low-level output current 1.65 V to 1.95 V 4 mA
2.3 V to 2.7 V 8
3 V to 3.6 V 24
4.5 V to 5.5 V 32
Δt/Δv Input transition
rise or fall rate
Data inputs 1.65 V to 1.95 V 20 ns/V
2.3 V to 2.7 V 20
3 V to 3.6 V 10
4.5 V to 5.5 V 5
TA Operating free-air temperature –40 85 °C
(1) VCCI is the VCC associated with the data input port.
(2) VCCO is the VCC associated with the output port.
(3) All unused or driven (floating) data inputs (I/Os) of the device must be held at logic HIGH or LOW (preferably VCCI or GND) to ensure proper device operation and minimize power. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
(4) All unused control inputs must be held at VCCA or GND to ensure proper device operation and minimize power comsumption.
(5) For VCCI values not specified in the data sheet, VIH min = VCCI  × 0.7 V, VIL max = VCCI  × 0.3 V.
(6) For VCCA values not specified in the data sheet, VIH min = VCCA  × 0.7 V, VIL max = VCCA  × 0.3 V.

8.4 Thermal Information DB, DBQ and DGV

THERMAL METRIC(1) DB DBQ DGV UNIT
24 PINS 24 PINS 24 PINS
RθJA Junction-to-ambient thermal resistance 88.5 81.2 91.1 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 48.7 44.8 23.7
RθJB Junction-to-board thermal resistance 44.1 34.5 44.5
ψJT Junction-to-top characterization parameter 12.8 9.5 0.6
ψJB Junction-to-board characterization parameter 43.6 37.2 44.1
RθJC(bot) Junction-to-case (bottom) thermal resistance N/A N/A N/A
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

8.5 Thermal Information PW and RHL

THERMAL METRIC(1) PW RHL UNIT
24 PINS 24 PINS
RθJA Junction-to-ambient thermal resistance 90.6 37.4 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 27.6 38.1
RθJB Junction-to-board thermal resistance 45.3 15.2
ψJT Junction-to-top characterization parameter 1.3 0.7
ψJB Junction-to-board characterization parameter 44.8 15.2
RθJC(bot) Junction-to-case (bottom) thermal resistance N/A 4.3
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

8.6 Electrical Characteristics(1)(2)

over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCCA VCCB MIN TYP MAX MIN MAX UNIT
VOH IOH = –100 μA, VI = VIH 1.65 V to 4.5 V 1.65 V to 4.5 V VCCO  – 0.1 V
IOH = –4 mA, VI = VIH 1.65 V 1.65 V 1.2
IOH = –8 mA, VI = VIH 2.3 V 2.3 V 1.9
IOH = –24 mA, VI = VIH 3 V 3 V 2.4
IOH = –32 mA, VI = VIH 4.5 V 4.5 V 3.8
VOL IOL = 100 μA, VI = VIL 1.65 V to 4.5 V 1.65 V to 4.5 V 0.1 V
IOL = 4 mA, VI = VIL 1.65 V 1.65 V 0.45
IOL = 8 mA, VI = VIL 2.3 V 2.3 V 0.3
IOL = 24 mA, VI = VIL 3 V 3 V 0.55
IOL = 32 mA, VI = VIL 4.5 V 4.5 V 0.55
II DIR VI = VCCA or GND 1.65 V to 5.5 V 1.65 V to 5.5 V ±1 ±2 μA
Ioff A or B port VI or VO = 0 to 5.5 V 0 V 0 to 5.5 V ±1 ±2 μA
0 to 5.5 V 0 V ±1 ±2
IOZ A or B port VO = VCCO or GND,
OE = VIH
1.65 V to 5.5 V 1.65 V to 5.5 V ±1 ±2 μA
ICCA VI = VCCI or GND, IO = 0 1.65 V to 5.5 V 1.65 V to 5.5 V 15 μA
5 V 0 V 15
0 V 5 V –2
ICCB VI = VCCI or GND, IO = 0 1.65 V to 5.5 V 1.65 V to 5.5 V 15 μA
5 V 0 V –2
0 V 5 V 15
ICCA + ICCB VI = VCCI or GND, IO = 0 1.65 V to 5.5 V 1.65 V to 5.5 V 25 μA
ΔICCA A port One A port at VCCA  – 0.6 V,
DIR at VCCA, B port = open
3 V to 5.5 V 3 V to 5.5 V 50 μA
DIR DIR at VCCA  – 0.6 V,
B port = open,
A port at VCCA or GND
50
ΔICCB B port One B port at VCCB  – 0.6 V,
DIR at GND, A port = open
3 V to 5.5 V 3 V to 5.5 V 50 μA
Ci Control inputs VI = VCCA or GND 3.3 V 3.3 V 4 5 pF
Cio A or B
port
VO = VCCA/B or GND 3.3 V 3.3 V 8.5 10 pF
(1) VCCO is the VCC associated with the output port.
(2) VCCI is the VCC associated with the input port.

8.7 Switching Characteristics, VCCA = 1.8 V ± 0.15 V

over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V (unless otherwise noted) (see Figure 3)
PARAMETER FROM
(INPUT)
TO
(OUTPUT)
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
tPLH A B 1.7 21.9 1.3 9.2 1 7.4 0.8 7.1 ns
tPHL
tPLH B A 0.9 23.8 0.8 23.6 0.7 23.4 0.7 23.4 ns
tPHL
tPHZ OE A 1.5 29.6 1.5 29.4 1.5 29.3 1.4 29.2 ns
tPLZ
tPHZ OE B 2.4 32.2 1.9 13.1 1.7 12 1.3 10.3 ns
tPLZ
tPZH OE A 0.4 24 0.4 23.8 0.4 23.7 0.4 23.7 ns
tPZL
tPZH OE B 1.8 32 1.5 16 1.2 12.6 0.9 10.8 ns
tPZL

8.8 Switching Characteristics, VCCA = 2.5 V ± 0.2 V

over recommended operating free-air temperature range, VCCA = 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 3)
PARAMETER FROM
(INPUT)
TO
(OUTPUT)
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
tPLH A B 1.5 21.4 1.2 9 0.8 6.2 0.6 4.8 ns
tPHL
tPLH B A 1.2 9.3 1 9.1 1 8.9 0.9 8.8 ns
tPHL
tPHZ OE A 1.4 9 1.4 9 1.4 9 1.4 9 ns
tPLZ
tPHZ OE B 2.3 29.6 1.8 11 1.7 9.3 0.9 6.9 ns
tPLZ
tPZH OE A 1 10.9 1 10.9 1 10.9 1 10.9 ns
tPZL
tPZH OE B 1.7 28.2 1.5 12.9 1.2 9.4 1 6.9 ns
tPZL

8.9 Switching Characteristics, VCCA = 3.3 V ± 0.3 V

over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 3)
PARAMETER FROM
(INPUT)
TO
(OUTPUT)
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
tPLH A B 1.5 21.2 1.1 8.8 0.8 6.3 0.5 4.4 ns
tPHL
tPLH B A 0.8 7.2 0.8 6.2 0.7 6.1 0.6 6 ns
tPHL
tPHZ OE A 1.6 8.2 1.6 8.2 1.6 8.2 1.6 8.2 ns
tPLZ
tPHZ OE B 2.1 29 1.7 10.3 1.5 8.6 0.8 6.3 ns
tPLZ
tPZH OE A 0.8 8.1 0.8 8.1 0.8 8.1 0.8 8.1 ns
tPZL
tPZH OE B 1.8 27.7 1.4 12.4 1.1 8.5 0.9 6.4 ns
tPZL

8.10 Switching Characteristics, VCCA = 5 V ± 0.5 V

over recommended operating free-air temperature range, VCCA = 5 V ± 0.5 V (unless otherwise noted) (see Figure 3)
PARAMETER FROM
(INPUT)
TO
(OUTPUT)
VCC = 1.8 V
± 0.15 V
VCC = 2.5 V
± 0.2 V
VCC = 3.3 V
± 0.3 V
VCC = 5 V
± 0.5 V
UNIT
MIN MAX MIN MAX MIN MAX MIN MAX
tPLH A B 1.5 21.4 1 8.8 0.7 6 0.4 4.2 ns
tPHL
tPLH B A 0.7 7 0.4 4.8 0.3 4.5 0.3 4.3 ns
tPHL
tPHZ OE A 0.3 5.4 0.3 5.4 0.3 5.4 0.3 5.4 ns
tPLZ
tPHZ OE B 2 28.7 1.6 9.7 1.4 8 0.7 5.7 ns
tPLZ
tPZH OE A 0.7 6.4 0.7 6.4 0.7 6.4 0.7 6.4 ns
tPZL
tPZH OE B 1.5 27.6 1.3 11.4 1 8.1 0.9 6 ns
tPZL

8.11 Operating Characteristics

TA = 25°C
PARAMETER TEST
CONDITIONS
VCCA =
VCCB = 1.8 V
VCCA =
VCCB = 2.5 V
VCCA =
VCCB = 3.3 V
VCCA =
VCCB = 5 V
UNIT
TYP TYP TYP TYP
CpdA(1) A-port input, B-port output CL = 0,
f = 10 MHz,
tr = tf = 1 ns
2 2 2 3 pF
B-port input, A-port output 12 13 13 16
CpdB(1) A-port input, B-port output 13 13 14 16
B-port input, A-port output 2 2 2 3
(1) Power dissipation capacitance per transceiver

8.12 Typical Characteristics

G001_sces584.gif
Figure 1. Voltage vs Current
G002_sces584.gif
Figure 2. Voltage vs Current