IDT74LVC4245A CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER INDUSTRIAL TEMPERATURE RANGE CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER WITH 3-STATE OUTPUTS AND 5 VOLT TOLERANT I/O DESCRIPTION: FEATURES: • • • • • • • • IDT74LVC4245A The LVC4245A is manufactured using advanced dual metal CMOS technology. This octal noninverting bus transceiver contains two separate supply rails; B port has VCCB, which is set at 3.3V, and A port has VCCA, which is set at 5V. This allows for translation from a 3.3V to a 5V environment, and vice-versa. This device is ideal for asynchronous communication between two buses (A and B). The direction control pin (DIR) controls the direction of data flow. The output enable pin (OE) overrides the direction control and disables both ports. All inputs are designed with hysteresis for improved noise margin. The LVC4245A has been designed with a ±24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance. 0.5 MICRON CMOS Technology VCCA = 5V ± 0.5V VCCB = 2.7V to 3.6V µ W typ. static) CMOS power levels (0.4µ 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 DRIVE FEATURES: • High Output Drivers: ±24mA • Reduced system switching noise APPLICATIONS: • 5V and 3.3V mixed voltage systems • Data communication and telecommunication systems FUNCTIONAL BLOCK DIAGRAM 2 22 A1 21 A2 B6 9 5V Port 15 A8 B5 8 16 A7 B4 7 17 A6 B3 6 18 A5 B2 5 19 A4 B1 4 20 A3 OE 3 3.3V Port DIR B7 10 14 B8 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE JULY 2000 1 © 2000 Integrated Device Technology, Inc. DSC-4754/1 IDT74LVC4245A CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS FOR VCCB OR VCCB(1) (5V) VCCA 1 24 VCCB (3.3V) DIR 2 23 VCCB (3.3V) A1 3 22 OE A2 4 21 B1 A3 5 20 B2 A4 6 19 B3 A5 7 18 B4 A6 8 17 B5 A7 9 16 B6 A8 10 15 B7 GND 11 14 B8 GND 12 13 GND Symbol Description Max Unit VTERM Terminal Voltage with Respect to GND –0.5 to +6.5 V TSTG Storage Temperature –65 to +150 °C IOUT DC Output Current –50 to +50 mA IIK IOK Continuous Clamp Current, VI < 0 or VO < 0 –50 mA ICC ISS Continuous Current through each VCC or GND ±100 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 = +25°C, F = 1.0MHz) Parameter(1) Symbol CIN Input Capacitance Conditions Typ. Max. Unit VIN = 0V or VCCA 5 — pF 11 — pF 11 — pF VCCA = Open CI/O I/O Port Capacitance(2) VOUT = VCCA or GND VCCA = 5V SOIC/ SSOP/ QSOP/ TSSOP TOP VIEW I/O Port Capacitance(3) VIN = VCCB or GND CI/O VCCB = 3.3V NOTES: 1. As applicable to the device type. 2. For A port only. 3. For B port only. PIN DESCRIPTION Pin Names Description Output Enable Input (Active LOW) OE DIR Direction Control Input Ax Port A Inputs or 3-State Outputs Bx Port B Inputs or 3-State Outputs FUNCTION TABLE(1) Inputs OE Outputs L L Bus B Data to Bus A L H Bus A Data to Bus B H X High Z state NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care 2 DIR IDT74LVC4245A CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (A PORT) Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = –40°C to +85°C, VCCA = 5V ± 0.5V(1) Symbol Parameter Test Conditions Min. Typ.(2) Max. Unit 2 — — V VIH Input HIGH Voltage Level VCCA = 4.5V to 5.5V VIL Input LOW Voltage Level VCCA = 4.5V to 5.5V — — 0.8 V IIH Input Leakage Current VCCA = 5.5V VI = 0 to 5.5V — — ±1 µA IOZH High Impedance Output Current VCCA = 5.5V VO = 0 to 5.5V — — ±5 µA IOZL (3-State Output pins) VH ICCL ICCH ICCZ ∆ICC Input Hysteresis Quiescent Power Supply Current VCCA = 5V VCCA = 5.5V VIN = GND or VCCA — — 100 — — 80 mV µA Quiescent Power Supply Current Variation One input at 3.4V, other inputs at VCCA or GND VCCA = 4.5V to 5.5V — — 1.5 mA IIL NOTES: 1. VCCB = 2.7V to 3.6V. 2. Typical values are at VCCA = 5V, +25°C ambient. DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (B PORT) Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = –40°C to +85°C, VCCB = 2.7V to 3.6V(1) Symbol Parameter Test Conditions Min. Typ.(2) Max. Unit VIH Input HIGH Voltage Level VCCB = 2.7V to 3.6V 2 — — V VIL Input LOW Voltage Level VCCB = 2.7V to 3.6V — — 0.8 V IOZH High Impedance Output Current VCCB = 3.6V VO = 0 to VCCB — — ±5 µA IOZL (3-State Output pins) VH ICCL ICCH ICCZ ∆ICC Input Hysteresis Quiescent Power Supply Current VCCB = 3.3V VCCB = 3.6V VIN = GND or VCCB — — 100 — — 50 mV µA Quiescent Power Supply Current Variation One input at VCCB - 0.6V, other inputs at VCCB or GND VCCB = 2.7V to 3.6V — — 500 µA NOTES: 1. VCCA = 5V ± 0.5V. 2. Typical values are at VCCB = 3.3V, +25°C ambient. 3 IDT74LVC4245A CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER INDUSTRIAL TEMPERATURE RANGE OUTPUT DRIVE CHARACTERISTICS, VCCA = 5V ± 0.5V (A PORT) Symbol VOH Test Conditions(1) Parameter Output HIGH Voltage VCCA = 4.5V (B Port to A Port) VCCA = 5.5V IOH = – 0.1mA VCCA = 4.5V IOH = – 24mA VCCA = 5.5V VOL Output LOW Voltage (B Port to A Port) VCCA = 4.5V IOL = 0.1mA VCCA = 5.5V VCCA = 4.5V IOL = 24mA VCCA = 5.5V Min. Max. Unit 4.3 — V 5.3 — 3.7 — 4.7 — — 0.2 — 0.2 — 0.55 — 0.55 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 = – 40°C to + 85°C, VCCB = 2.7V to 3.6V. OUTPUT DRIVE CHARACTERISTICS, VCCB = 2.7V TO 3.6V (B PORT) Symbol VOH Test Conditions(1) Parameter Output HIGH Voltage (A Port to B Port) Max. Unit V VCCB = 2.7V to 3.6V IOH = – 0.1mA VCC – 0.2 — VCCB = 2.7V IOH = – 12mA 2.2 — 2.4 — VCCB = 3V VOL Min. VCCB = 3V IOH = – 24mA 2 — Output LOW Voltage VCCB = 2.7V to 3.6V IOL = 0.1mA — 0.2 (A Port to B Port) VCCB = 2.7V IOL = 12mA — 0.4 VCCB = 3V IOL = 24mA — 0.55 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 = – 40°C to + 85°C, VCCA = 5V ± 0.5V. OPERATING CHARACTERISTICS, TA = 25°C VCCA = 5V, VCCB = 3.3V Symbol Parameter CPD Power Dissipation Capacitance per Transceiver Outputs enabled CPD Power Dissipation Capacitance per Transceiver Outputs disabled Test Conditions Typical Unit CL = 0pF, f = 10Mhz 39.5 pF 5 4 IDT74LVC4245A CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS(1) VCCA = 5V ± 0.5V VCCB = 2.7V to 3.6V Symbol Parameter Min. Max. Unit ns tPLH Propagation Delay 1 6.3 tPHL Ax to Bx 1 6.7 tPLH Propagation Delay 1 6.1 tPHL Bx to Ax 1 5 tPZL Output Enable Time 1 8.8 tPLZ OE to Bx 1 9.8 tPZL Output Enable Time 1 9 tPLZ OE to Ax 1 8.1 tPLZ Output Disable Time 1 7.7 tPHZ OE to Bx 1 7.8 tPLZ Output Disable Time 1 7 tPHZ OE to Ax 1 5.8 NOTE: 1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C. 5 ns ns ns ns ns IDT74LVC4245A CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER INDUSTRIAL TEMPERATURE RANGE LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION (A PORT) TEST CONDITIONS 500Ω S1 From Output Under Test CL = 50pF (see Note A) TEST 2 x VCC Open GND S1 tPLH / tPHL Open tPLZ / tPZL 2 x VCC tPHZ / tPZH GND 500Ω Load Circuit tW Input 1.5V 3V Output Control VCC 1.5V 1.5V 1.5V 0V 0V tPZL Output Waveform 1 S1 at 2 X VCC (see Note B) Voltage Waveforms Pulse Duration Output Waveform 2 S1 at GND (see Note B) tPLZ 50% VCC tPZH tPHZ 50% VCC VCC 1.5V Input 1.5V Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling 0V tPHL tPLH VOH Output 50% VCC 50% VCC VOL 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 = 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns. D. The outputs are measured one at a time with one transition per measurement. 6 VCC VOL+0.3V VOL VOH VOH-0.3V 0V IDT74LVC4245A CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER INDUSTRIAL TEMPERATURE RANGE LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION (B PORT) TEST CONDITIONS 500Ω S1 From Output Under Test CL = 50pF (see Note A) 7V Open GND TEST S1 tPLH / tPHL Open tPLZ / tPZL 7V tPHZ / tPZH GND 500Ω Load Circuit tW Input 1.5V 3V Output Control 3V 1.5V 1.5V 1.5V 0V 0V tPZL tPLZ Output Waveform 1 S1 at 7V (see Note B) Voltage Waveforms Pulse Duration Output Waveform 2 S1 at GND (see Note B) 1.5V tPHZ tPZH 1.5V 3V 1.5V 1.5V Input Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling 0V tPHL tPLH VOH Output 1.5V 1.5V VOL 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 = 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns. D. The outputs are measured one at a time with one transition per measurement. 7 3.5V VOL+0.3V VOL VOH VOH-0.3V 0V IDT74LVC4245A CMOS OCTAL BUS TRANSCEIVER AND 3.3V TO 5V SHIFTER INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION X LVC IDT XX XXXX XX Temp. Range Bus-Hold 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 4245A Octal Bus Transceiver and 3.3V to 5V Shifter with 3-State Outputs, ±24mA Blank No Bus-hold 74 –40°C to +85°C CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 8 for Tech Support: [email protected] (408) 654-6459