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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
CMOS OCTAL DUAL-SUPPLY IDT74LVCC4245A BUS TRANSCEIVER WITH CONFIGURABLE OUTPUT VOLTAGE, 3-STATE OUTPUTS, 3.3V AND 5V I/O
* * * * * * * *
FEATURES:
0.5 MICRON CMOS Technology VCCA = 5V 0.5V VCCB = 2.7V to 5.5V CMOS power levels (0.4 W typ. static) Rail-to-rail output swing for increased noise margin All inputs, outputs, and I/O are 5V tolerant Supports hot insertion Available in SOIC, SSOP, QSOP, and TSSOP packages
DESCRIPTION:
DRIVE FEATURES:
* High Output Drivers: 24mA * Reduced system switching noise
The LVCC4245A is manufactured using advanced dual metal CMOS technology. This 8-bit (octal) noninverting bus transceiver contains two separate power-supply rails. The configurable B port is designed to track VCCB, which accepts voltages from 3V to 5V, and the A port is dedicated to accept a 5V supply level. This allows for translation from a 3.3V to a 5V system environment and vice-versa. This LVCC4245A is ideal for asynchronous communication between two data buses (A and B). The device transmits data from A to B or from B to A, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. The LVCC4245A has been designed with a 24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance.
APPLICATIONS:
* 5V and 3.3V mixed voltage systems * Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
DIR
2 22
OE
A1
3 21 4 20
B1
A2
B2
A3
5 19 6 18 7 17 8 16
B3
3V to 5V Port
A4
5V Port
B4
A5
B5
A6
B6
A7
9 15 10
B7
A8
14
B8
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
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(c) 2000 Integrated Device Technology, Inc.
JULY 2000
DSC-5166/1
IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
(5V) VCCA DIR A1 A2 A3 A4 A5 A6 A7 A8 GND GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCCB (3V to 5V) NC OE B1 B2 B3 B4 B5 B6 B7 B8 GND
ABSOLUTE MAXIMUM RATINGS FOR VCCB OR VCCB(1)
Symbol VTERM TSTG IOUT IIK IOK ICC ISS Description Terminal Voltage with Respect to GND Storage Temperature DC Output Current Continuous Clamp Current, VI < 0 or VO < 0 Continuous Current through each VCC or GND Max -0.5 to +6 -65 to +150 -50 to +50 -50 100 Unit V C mA mA mA
NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
CAPACITANCE (TA = +25C, F = 1.0MHz)
Symbol CIN CI/O Parameter(1) Input Capacitance I/O Port Capacitance Conditions VIN = 0V VIN = 0V Typ. 5 11 Max. -- -- Unit pF pF
SOIC/ SSOP/ QSOP/ TSSOP TOP VIEW
NOTE: 1. As applicable to the device type.
PIN DESCRIPTION
Pin Names OE DIR Ax Bx NC Description Output Enable Input (Active LOW) Direction Control Input Port A Inputs or 3-State Outputs Port B Inputs or 3-State Outputs No Internal Connection
FUNCTION TABLE(1)
Inputs OE L L H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care
DIR L H X
Outputs Bus B Data to Bus A Bus A Data to Bus B High Z state
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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (A PORT)
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = -40C to +85C, VCCA = 4.5V to 5.5V(1)
Symbol VIH Parameter Input HIGH Voltage Level Test Conditions VCCA = 4.5V, VCCB = 2.7V VCCA = 4.5V, VCCB = 3.6V VCCA = 5.5V, VCCB = 5.5V VCCA = 4.5V, VCCB = 2.7V VIL IIH IIL IOZH IOZL VH ICCL ICCH ICC Quiescent Power Supply Current Variation
NOTES: 1. VCCB = 2.7V to 5.5V unless otherwise noted. 2. Typical values are at VCCA = 5V, +25C ambient.
Min. 2 2 2 -- -- --
Typ.(2) -- -- -- -- -- -- -- -- 100 -- --
Max. -- -- -- 0.8 0.8 0.8 1 5 -- 80 1.5
Unit V
VOB 0.1V or VOB VCCB - 0.1V
Input LOW Voltage Level Input Leakage Current (Control Inputs) High Impedance Output Current (3-State Output pins) Input Hysteresis Quiescent Power Supply Current
VCCA = 4.5V, VCCB = 3.6V VCCA = 5.5V, VCCB = 5.5V VCCA = 5.5V VCCB = 3.6V or 5.5V VCCA = 5.5V VCCB = 3.6V VCCA = 5.0V VCCA = 5.5V VCCB = 3.6V or 5.5V VIN = GND or VCCA IOB = 0 VI = 0 to 5.5V VO = 0 to 5.5V
V A A mV A mA
-- -- -- -- --
One input at 3.4V, other inputs at VCCA or GND
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (B PORT)
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = -40C to +85C, VCCB = 2.7V to 5.5V(1)
Symbol VIH Parameter Input HIGH Voltage Level
Test Conditions VCCB = 2.7V, VCCA = 4.5V VCCB = 3.6V, VCCA = 4.5V VCCB = 5.5V, VCCA = 5.5V VCCB = 2.7V, VCCA = 4.5V VOA 0.1V or VOA VCCA - 0.1V
Min. 2 2 3.85 -- -- --
Typ.(2) -- -- -- -- -- -- -- 100 -- --
Max. -- -- -- 0.8 0.8 1.65 5 -- 80 500
Unit V
VIL IOZH IOZL VH ICCL ICCH ICC
Input LOW Voltage Level High Impedance Output Current (3-State Output pins) Input Hysteresis Quiescent Power Supply Current Quiescent Power Supply Current Variation
VCCB = 3.6V, VCCA = 4.5V VCCB = 5.5V, VCCA = 5.5V VCCB = 3.6V VCCA = 5.5V VCCB = 3.3V VCCB = 3.6V or 5.5V VCCA = 5.5V VIN = GND or VCCB IOA = 0 VO = 0 to 5.5V
V A mV A A
-- -- -- --
One input at VCCB - 0.6V, other inputs at VCCB or GND
NOTES: 1. VCCA = 4.5V to 5.5V unless otherwise noted. 2. Typical values are at VCCB = 3.3V, +25C ambient.
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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
OUTPUT DRIVE CHARACTERISTICS (A PORT)
Symbol VOH VOL Parameter Output HIGH Voltage (B port to A port) Output LOW Voltage (B port to A port) VCCA = 4.5V VCCB = 3V VCCA = 4.5V Test Conditions(1) VCCB = 3V IOH = - 0.1mA IOH = - 24mA IOL = 0.1mA IOL = 24mA Min. 4.4 3.76 -- -- Max. -- -- 0.1 0.44 V Unit V
NOTE: 1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = - 40C to + 85C.
OUTPUT DRIVE CHARACTERISTICS (B PORT)
Symbol VOH Parameter Output HIGH Voltage (A port to B port) VCCB = 3V VCCB = 2.7V VCCB = 3V VCCB = 2.7V VCCB = 3V VCCB = 4.5V VOL Output LOW Voltage (A port to B port) VCCB = 3V VCCB = 2.7V VCCB = 2.7V VCCB = 3V VCCB = 4.5V Test Conditions(1) VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V VCCA = 4.5V IOL = 0.1mA IOL = 12mA IOL = 24mA IOH = - 24mA IOH = - 0.1mA IOH = - 12mA Min. 2.9 2.2 2.46 2.1 2.25 3.76 -- -- -- -- -- Max. -- -- -- -- -- -- 0.1 0.44 0.5 0.44 0.44 V Unit V
NOTE: 1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = - 40C to + 85C, VCCA = 4.5V.
OPERATING CHARACTERISTICS, TA = 25C
VCCA = 5V, VCCB = 3.3V Symbol CPD CPD Parameter Power Dissipation Capacitance per Transceiver Outputs enabled Power Dissipation Capacitance per Transceiver Outputs disabled Test Conditions CL = 0pF, f = 10Mhz Typical 20 6.5 Unit pF
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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS(1)
VCCA = 5V 0.5V VCCB = 5V 0.5V Symbol tPLH tPHL tPLH tPHL tPZL tPZH tPZL tPZH tPLZ tPHZ tPLZ tPHZ Parameter Propagation Delay Ax to Bx Propagation Delay Bx to Ax Output Enable Time OE to Bx Output Enable Time OE to Ax Output Disable Time OE to Ax Output Disable Time OE to Bx Min. 1 1 1 1 1 1 1 1 1 1 1 1 Max. 7.1 6 6.8 6.1 8.2 8.1 9 8.3 4.7 4.9 5.4 6.3 1 1 1 1 1 1 1 1 1 1 1 1 VCCB = 2.7V to 3.6V Min. Max. 7 7 6.2 5.3 10 10.2 9 8 5.2 5.2 5.4 7.4 ns ns ns ns ns Unit ns
NOTE: 1. See TEST CIRCUITS AND WAVEFORMS. TA = - 40C to + 85C.
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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION FOR A TO B
VCCA = 4.5V to 5.5V and VCCB = 2.7V to 3.6V
TEST CONDITIONS
500 From Output Under Test CL = 50pF (see Note A) 500 S1 6V Open GND
TEST tPLH / tPHL tPLZ / tPZL tPHZ / tPZH S1 Open 6V GND
Load Circuit
tW 3V Input 1.5V 1.5V 0V Output Waveform 1 S1 at 6V (see Note B) Output Waveform 2 S1 at GND (see Note B) 3V Input tPLH Output 1.5V 1.5V 1.5V 0V tPHL VOH 1.5V VOL tPZH 1.5V Output Control tPZL tPLZ 1.5V tPHZ 1.5V 1.5V
3V 0V
Voltage Waveforms Pulse Duration
3V VOL+0.3V VOL VOH VOH-0.3V 0V
Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling
Voltage Waveforms Propagation Delay Times Noninverting Outputs
NOTES: A. CL includes probe and jig capacitance. 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: PRR 10MHz; Zo = 50; tF 2.5ns; tR 2.5ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION FOR A TO B
VCCA = 4.5V to 5.5V and VCCB = 3.6V to 5.5V
TEST CONDITIONS
500 From Output Under Test CL = 50pF (see Note A) 500 S1 7V Open GND
TEST tPLH / tPHL tPLZ / tPZL tPHZ / tPZH S1 Open 7V GND
Load Circuit
tW 3V Input 1.5V 1.5V 0V Output Control tPZL Output Waveform 1 S1 at 7V (see Note B) Output Waveform 2 S1 at GND (see Note B) 3V Input tPLH Output 1.5V 1.5V 1.5V 0V tPHL VOH 1.5V VOL tPZH 1.5V tPLZ 1.5V tPHZ 1.5V 1.5V
3V 0V
Voltage Waveforms Pulse Duration
3.5V VOL+0.3V VOL VOH VOH-0.3V 0V
Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling
Voltage Waveforms Propagation Delay Times Noninverting Outputs
NOTES: A. CL includes probe and jig capacitance. 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: PRR 10MHz; Zo = 50; tF 2.5ns; tR 2.5ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION FOR B TO A
VCCA = 4.5V to 5.5V and VCCB = 2.7V to 3.6V
TEST CONDITIONS
500 From Output Under Test CL = 50pF (see Note A) 500 S1 2 x VCCA Open GND
TEST tPLH / tPHL tPLZ / tPZL tPHZ / tPZH S1 Open 2 x VCCA GND
Load Circuit
tW 3V Input 1.5V 1.5V 0V Output Waveform 1 S1 at 2 X VCCA (see Note B) Output Waveform 2 S1 at GND (see Note B) 3V Input tPLH Output 1.5V 1.5V 1.5V 0V tPHL VOH 1.5V VOL tPZH 1.5V Output Control tPZL tPLZ 1.5V tPHZ 1.5V 1.5V
3V 0V
Voltage Waveforms Pulse Duration
VCCA VOL+0.3V VOL VOH VOH-0.3V 0V
Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling
Voltage Waveforms Propagation Delay Times Noninverting Outputs
NOTES: A. CL includes probe and jig capacitance. 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: PRR 10MHz; Zo = 50; tF 2.5ns; tR 2.5ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION FOR B TO A
VCCA = 4.5V to 5.5V and VCCB = 3.6V to 5.5V
TEST CONDITIONS
500 From Output Under Test CL = 50pF (see Note A) 500 S1 2 x VCCA Open GND
TEST tPLH / tPHL tPLZ / tPZL tPHZ / tPZH S1 Open 2 x VCCA GND
Load Circuit
tW VCCB Input VCCB/2 VCCB/2 0V Output Waveform 1 S1 at 2 X VCCA (see Note B) Output Waveform 2 S1 at GND (see Note B) VCCB Input tPLH Output 1.5V VCCB/2 VCCB/2 0V tPHL VOH 1.5V VOL tPZH 1.5V Output Control tPZL tPLZ 1.5V tPHZ 1.5V 1.5V
3V 0V
Voltage Waveforms Pulse Duration
VCCA VOL+0.3V VOL VOH VOH-0.3V 0V
Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling
Voltage Waveforms Propagation Delay Times Noninverting Outputs
NOTES: A. CL includes probe and jig capacitance. 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: PRR 10MHz; Zo = 50; tF 2.5ns; tR 2.5ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC4245A CMOS OCTAL DUAL-SUPPLY BUS TRANSCEIVER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
X LVC IDT XX Temp. Range Bus-Hold XX XXXX Device Type Package
SO PY Q PG
Small Outline IC (gull wing) Shrink Small Outline Package Quarter Size Small Outline Package Thin Shrink Small Outline Package
C4245A Octal Dual-Supply Bus Transceiver with Configurable Output Voltage and 3-State Outputs, 24mA Blank 74 No Bus-Hold -40C to +85C
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