PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs Product Features Product Description • • • • 2.7V to 3.6V on A-port and 4.5V to 5.5V on B-port TTL Compatible Inputs Latch-up performance exceeds 200mA Per JESD78 ESD protection exceeds JESD22 – 2000V Human-Body Model (A114-B) – 200V Machine Model (A115-A) • Industrial Temperature: –40°C to +85°C • Packaging (Pb-free & Green availiable): – 24-pin 173-mil wide plastic TSSOP (L) – 24-pin 150-mil wide plastic QSOP (Q) The PI74LVC3245A is a non-inverting 8-bit Bidirectional Transceiver that uses two seperate power supply rails. A-port (VCCA) is set to operate at 3.3V and B-port (VCCB) is set to operate at 5V. This allows for translation from a 3.3V to a 5V environment and vice-versa. This tranceiver is designed for asynchronous two-way communication between data buses. The direction control input pin (DIR) determines the dataflow from the A bus to the B bus or from the B bus to the A bus. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. Logic Block Diagram Product Pin Configuration DIR 2 22 (3.3V) VCCA 1 24 VCCB (5V) DIR 2 23 NC A1 3 22 OE A2 4 21 B1 A3 5 20 B2 A4 6 19 B3 A5 7 18 B4 OE A1 3 21 B1 A2 4 20 B2 A3 5 19 B3 A6 8 17 B5 18 B4 A7 9 16 B6 A8 10 15 B7 17 B5 GND 11 14 B8 GND 12 13 GND A4 6 A5 7 A6 8 16 B6 A7 9 15 B7 A8 10 14 B8 Product Pin Description Truth Table(1) Inputs Outputs Pin Name Description OE 3-State Output Enable Inputs (Active LOW) DIR Direction Control Input Ax Side A Inputs or 3-State Outputs OE DIR L L Bus B Data to Bus A Bx Side B Inputs or 3-State Outputs L H Bus A Data to Bus B NC NO Internal Connect H X Z (Isolation) GND Ground VCCA,VCCB Power Note: 1. H = High Signal Level X = Don’t Care or Irrelevant 08-0291 L = Low Signal Level Z = High Impedance 1 PS8699C 10/23/08 PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Notes: Stresses greater than those listed under 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. Supply voltage range, VCCA and VCCB ............................ –0.5V to +7V Input voltage range, VI(1) : I/O ports (A-port) .... –0.5V to VCCA +0.5V I/O ports (B-port) ........... –0.5V to VCCB+0.5V Control Pins ................. –0.5V to VCCA +0.5V Input clamp current, IIK (VI <0) ................................................–50mA Output clamp current, IOK (VO <0)...........................................–50mA Continous Output Current IO ..................................................±50mA Continous Current through each VCC or GND pin .....................±100mA Package thermal impedance, θJA(2): package L ...................... 84°C/W package Q...................... 98°C/W package S ...................... 79°C/W Storage Temperature range, Tstg ................................–65°C to 150°C 08-0291 1. This value is limited to 7V maximum. 2. The package thermal impedance is calculated in accordance with JESD 51. 2 PS8699C 11/10/08 PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs Recommended Operating Conditions(1) Parameters Description VCCA VCCB Min. Typ. Max. VCCA Supply Voltage 2.7 3.3 3.6 VCCB Supply Voltage 4.5 5 5.5 VIHA High-Level Input Voltage VOB ≤ 0.1v or VOB ≥ VCCB -0.1V 2.7V 5.0V 2 3.6V 5.0V 2 VIHB High-Level Input Voltage VOA ≤ 0.1V or VOA ≥ VCCA -0.1V 3.3V 4.5V 2 3.3V 5.5V 2 VILA Low-Level Input Voltage VOB ≤ 0.1V or VOB ≥ VCCB -0.1V 2.7V 5.0V 0.8 3.6V 5.0V 0.8 VILB Low-Level Input Voltage VOA ≤ 0.1V or VOA ≥ VCCA -0.1V 3.3V 4.5V 0.8 3.3V 5.5V 0.8 2.7V 4.5V 2 VIH High-Level Input Voltage (Control Pins) VOA ≤ 0.1V or VOA ≥ VCCA -0.1V, VOB ≤ 0.1V or VOB ≥ VCCB -0.1V 3.6V 5.5V 2 4.5V 0.8 VIL VOA ≤ 0.1V or VOA ≥ VCCA -0.1V, VOB ≤ 0.1V or VOB ≥ VCCB -0.1V 2.7V Low-Level Input Voltage (Control Pins) 3.6V 5.5V 0.8 VIA Input Voltage 0 VCCA VIB Input Voltage 0 VCCB VOA Output Voltage 0 VCCA VOB Output Voltage 0 VCCB IOHA High-Level Output Current IOHB High-Level Output Current IOLA Low-Level Output Current IOLB Low-Level Output Current ∆t/∆v Input transition Rise or Fall Rate TA Operating Free-Air Temp. V 2.7V 4.5V -12 3V 4.5V -24 3V 4.5V -24 2.7V 4.5V 12 3V 4.5V 24 3V 4.5V 24 -40 Units mA 10 ns/v 85 ºC Notes: 1. All unused inputs of the device must be held at the associated VCC or GND to ensure proper device operation. 08-0291 3 PS8699C 11/10/08 PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs DC Electrical Characteristics (Over the Operating Range, TA = –40°C +85°C) Parameters VOHA Description Minimum High Level Output Voltage (Port A) Test Conditions VCCA VCCB Min. Typ. IOH = –100μA 3V 4.5V 2.9 3 2.7V 4.5V 2.2 2.55 3V 4.5V 2.4 2.8 2.7V 4.5V 2 2.4 3V 4.5V 2.25 2.7 IOH = –100μA 3V 4.5V 4.4 4.5 IOH = –24mA 3V 4.5V 3.76 4.21 IOL = 100μA 3V 4.5V 0.01 0.1 IOL = 12mA 2.7V 4.5V 0.09 0.44 2.7V 4.5V 0.18 0.5 3V 4.5V 0.18 0.44 IOL = 100μA 3V 4.5V 0.01 0.1 IOL = 24mA 3V 4.5V 0.18 0.44 IOH = –12mA IOH = –24mA VOHB VOLA Minimum High Level Output Voltage (Port B) Maximum Low Level Output Voltage (Port A) IOL = 24mA Max. Units V VOLB Maximum Low Level Output Voltage (Port B) II Maximum Input Leakage Current (Control Inputs) VI = VCCA or GND 3.6V 5.5V ±1 Maximum 3-State Output Leakage Current (A or B ports) VI = VIL or VIH, OE = VCCA VO = VCCA/B or GND 3.6V 5.5V ±5 ICCA Quiescent VCCA Supply Current B to A, B-Port = VCCB or GND, IO (A port) = 0 3.6V 5.5V 10 ICCB Quiescent VCCB Supply Current A to B, A port = VCCA or GND, IO (B port) = 0 3.6V 5.5V 10 ICC per input (A port) One input VI = VCCA –0.6V, other inputs = VCCA or GND, OE = GND and DIR = VCCA 3.6V 5.5V 50 ICC per input (OE) One input VI = VCCA –0.6V, other inputs = VCCA or GND, DIR = VCCA 3.6V 5.5V 50 ICC per input (DIR) VI = VCCA –0.6V, other inputs = VCCA or GND, OE = GND 3.6V 5.5V 50 ICC per input (B Port) One Input VI = VCCB –2.1V, other inputs = VCCB or GND, OE = GND and DIR = GND 3.6V 5.5V (1) IOZ ∆ICC(2) μA 0.7 1.5 uA mA Notes: 1. For I/O ports, the parameter IOZ includes the input leakage current. 2. This is the increase in supply current for each input that is at one of the specified voltage levels, rather than 0V or the associated VCC. 08-0291 4 PS8699C 11/10/08 PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs Capacitance (TA = 25°C) Parameters Description Test Conditions Typ. CIN Control Input Capacitance VI = VCCA or GND, VCCA = Open, VCCB =Open 2.8 CI/O Input/Output Capacitance (A or B port) VI/O = VCCA/B or GND, VCCA = 3.3V, VCCB = 5V 9 Outputs Enabled 22 CPD Power Dissipation Capacitance (1) Outputs Disabled VCCA = 3.3V, VCCB = 5V CL = 0pF, f = 10MHz Units pF 2.2 Notes: 1. CPD is defined as the value of the internal equivalent capacitance which is derived from dynamic operating current consumption (ICCD) at no output loading and operating at 50% duty cycle, CPD is related to ICCD dynamic operating current by the expression: ICCD = (CPD)(VCC)(fIN) +(ICC static) AC Electrical Characteristics (Over Operating Range, TA = –40°C to +85°C) VCCA = 2.7V to 3.6V, VCCB = 5V ±0.5V Parameters tPHL tPLH tPHL tPLH tPZL tPZH tPZL tPZH tPLZ tPHZ tPLZ tPHZ tSK(O) From (Input) CL = 50pF, RL = 500Ω To (Output) A B B A OE A OE B OE A OE B Output-to-Output Skew(1) Units Min. Max. 1.0 6.3 1.0 6.0 1.0 5.7 1.0 6.0 1.0 7.8 1.0 7.5 1.0 7.8 1.0 7.6 1.0 7.0 1.0 7.5 1.0 7.0 1.0 7.3 ns 1.5 Notes: 1. Skew between any two outputs of the same device, switching in the same direction. Parameter guaranteed by design. 08-0291 5 PS8699C 11/10/08 PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs Power- Up Considerations To avoid excessive supply current, bus contention or oscillation during power-up, the following guidelines should be followed: 1. Connect ground first before any supply voltage is applied. 2. Power up VCCA, which is the control side of the device. 3. Ramp OE ahead of or with VCCA to help prevent bus contention 4. Ramp DIR with VCCA if DIR high is needed (A bus to B bus). Otherwise keep DIR Low. PARAMETER MEASUREMENT INFORMATION FOR A TO B PORT VCCA =2.7V TO 3.6V and VCCB = 5V ± 0.5V 2xVCCB 500Ω 500Ω From Output Under Test S1 Open GND 500Ω 500Ω CL = 50 50pF (See Note A) Test S1 tPLH/tPHL Open tPLZ/tPZL 2 x VCCB tPHZ/tPZH GND Load Circuit 2.7V Output Control 1.5V tPZL 1.5V B-Port Output tPHL VOH 50% VCCB tPLZ Output Waveform 1 S1 at 2 x VCCB 50% VCCB (see Note B) t PZH 0V tPLH 1.5V 0V 2.7V Input 1.5V 50% VCCB VOL Output Waveform 2 S1 at GND (see Note B) Voltage Waveforms Propagation Delay Times VCCB VOL +0.3V VOL tPHZ 50% VCCB VOH –0.3V VOH 0V Voltage Waveforms Enable and Disable Times Figure 1. Load Circuit and Voltage Waveforms 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. • All input impulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns. • The outputs are measured one at a time with one transition per measurement. 08-0291 6 PS8699C 11/10/08 PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs PARAMETER MEASUREMENT INFORMATION FOR B TO A PORT VCCA =2.7V TO 3.6V and VCCB = 5V ± 0.5V 6V 500Ω 500Ω From Output Under Test S1 Open GND 500Ω 500Ω CL = 50 50pF (See Note A) Test S1 tPLH/tPHL Open tPLZ/tPZL 6V tPHZ/tPZH GND Load Circuit 2.7V Output Control 1.5V A-Port Output tPZL 1.5V 0V tPLH tPHL VOH 1.5V 1.5V 0V 3V B Port Input 1.5V 1.5V VOL Voltage Waveforms Propagation Delay Times tPLZ Output Waveform 1 S1 at 6V (see Note B) t PZH 1.5V Output Waveform 2 S1 at GND (see Note B) 1.5V 3V VOL +0.3V VOL tPHZ VOH –0.3V VOH 0V Voltage Waveforms Enable and Disable Times Figure 2. Load Circuit and Voltage Waveforms 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. • All input impulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns. • The outputs are measured one at a time with one transition per measurement. 08-0291 7 PS8699C 11/10/08 PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs Packaging Mechanical: 24-pin TSSOP (L) DOCUMENT CONTROL NO. PD - 1312 24 REVISION: E DATE: 03/09/05 .169 .177 4.3 4.5 .004 .008 1 .303 .311 7.7 7.9 0.45 0.75 1 .047 1.20 Max .0256 BSC 0.65 .007 .012 0.19 0.30 .002 .006 SEATING PLANE 0.09 0.20 .018 .030 .252 BSC 6.4 0.05 0.15 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com Note: 1. Package Outline Exclusive of Mold Flash and Metal Burr 2. Controlling dimentions in millimeters 3. Ref: JEDEC MO-153F/AD DESCRIPTION: 24-Pin, 173-Mil Wide, TSSOP PACKAGE CODE: L 08-0291 8 PS8699C 11/10/08 PI74LVC3245A 8-Bit Dual Supply Bus Transceiver with 3-State Outputs Packaging Mechanical: 24-pin QSOP (Q) DOCUMENT CONTROL NO. PD - 1203 24 REVISION: H .008 0.20 MIN. .150 .157 3.81 3.99 Guage Plane .010 0.254 .016 .035 0.41 0.89 Detail A 1 .337 .344 DATE: 10/22/07 .008 .013 0.20 0.33 0˚-6˚ .041 1.04 REF 8.56 8.74 .033 0.84 .053 .069 .015 x 45˚ 0.38 1.35 1.75 Detail A 1 .007 .010 0.178 0.254 SEATING PLANE .025 typical 0.635 .008 0.203 .012 0.305 .004 0.101 .010 0.254 .228 .244 5.79 6.20 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 • www.pericom.com Note: 1) Controlling dimensions in millimeters 2) Ref: JEDEC MO-137B/AE 3) Dimensions do not include mold flash, protrusions or gate burrs DESCRIPTION: 24-Pin, 150-Mil Wide, QSOP PACKAGE CODE: Q 07-0475 Ordering Information Ordering Code Package Code Package Type PI74LVC3245ALE L Pb-free & Green, 24-pin, 173-mil wide plastic TSSOP PI74LVC3245AQE Q Pb-free & Green, 24-pin, 150-mil wide plastic QSOP Notes: • Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ • E = Pb-free & Green • Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 08-0291 9 PS8699C 11/10/08