PI74FCT162Q245T LOW NOISE 16-BIT BIDIRECTIONAL TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT162Q245T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast, Low Noise CMOS 16-Bit Bidirectional Transceivers Product Features: • VCC = 5V ±10% Product Description: • Balanced output drivers: ±12 mA Pericom Semiconductor’s PI74FCT series of logic circuits are produced in the Company’s advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The PI74FCT162Q245T is a 16-bit bidirectional transceiver designed for asynchronous two-way communication between data buses. The direction control input pin (xDIR) determines the direction of data flow through the bidirectional transceiver. The Direction and Output Enable controls are designed to operate these devices as either two independent 8-bit transceivers or one 16-bit transceiver. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. The PI74FCT162Q245T is designed with current limiting resistors at its outputs to control the output edge rate resulting in lower ground bounce and undershoot. This device features a typical output impedance of 35Ω, eliminating the need for external terminating resistors for most bus interface applications. This noise suppression benefit is designated by the letter “Q” (for quiet) in the part number. The PI74FCT162Q245T also features “Bus Hold” which retains the input’s last state whenever the input goes to high-impedance preventing “floating” inputs and eliminating the need for pullup/ down resistors. • Output impedance: 35Ω (typical) • Typical VOLP (Output Ground Bounce) < 0.5V at VCC = 5V, TA = 25°C • Bus Hold retains last active bus state during tri-state • Hysteresis on all inputs • Packages available: – 48-pin 240-mil wide plastic TSSOP (A48) – 48-pin 300-mil wide plastic SSOP (V48) – 48-pin 150-mil wide plastic BQSOP (B48) • Device models available on request Logic Block Diagram 1DIR 2DIR 1OE 2OE 1A0 2A0 1B0 2B0 1A1 2A1 1B1 2B1 1A2 2A2 1B2 2B2 1A3 2A3 1B3 2B3 1A4 2A4 1B4 2B4 1A5 2A5 1B5 2B5 1A6 2A6 1B6 2B6 1A7 2A7 1B7 2B7 290 PS2050A 04/12/96 PI74FCT162Q245T LOW NOISE 16-BIT BIDIRECTIONAL TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product Pin Description Pin Name xOE xDIR xAx xBx GND VCC Truth Table Description Output Enable Inputs (Active LOW) Direction Control Input Side A Inputs or 3-State Outputs(1) Side B Inputs or 3-State Outputs(1) Ground Power Note: 1. For the PI74FCT162Q245T, these pins have “Bus Hold.” All other pins are standard, outputs, or I/Os. Inputs(1) XOE L L H xDIR L H X Outputs(1) Bus B Data to Bus A Bus A Data to Bus B High Z State Note: 1. H = High Voltage Level X = Don’t Care L = Low Voltage Level Z = High Impedance Product Pin Configuration 1DIR 1 48 1 B0 1OE 2 47 1A0 1B1 3 46 1A1 GND 4 45 GND 1 B2 5 44 1A2 1B3 6 43 1A3 VCC 7 42 VCC 1 B4 8 41 1A4 40 1A5 39 GND 1B5 9 GND 10 1 B6 11 1B7 12 2B0 13 2B1 14 GND 48-PIN A48 B48 V48 38 1D6 37 1A7 36 2A0 35 2A1 15 34 GND 2 B2 16 33 2A2 2B3 17 32 2A3 VCC 18 31 VCC 2 B5 19 30 2A4 2B5 20 29 2A5 GND 21 28 GND 2B6 22 27 2A6 2B7 23 26 2A7 2DIR 24 25 2OE 291 PS2050A 04/12/96 PI74FCT162Q245T LOW NOISE 16-BIT BIDIRECTIONAL TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................................................. –65°C to +150°C Ambient Temperature with Power Applied ................................. –40°C to +85°C Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... –0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) ....... –0.5V to +7.0V DC Input Voltage ......................................................................... –0.5V to +7.0V DC Output Current ................................................................................... 120 mA Power Dissipation ......................................................................................... 1.0W Note: 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. DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5.0V ± 10%) Parameters Description VIH VIL IIH IIH IIL IIL IBHH IBHL IOZH IOZL VIK IO VH Input HIGH Voltage Input LOW Voltage Input HIGH Current Input HIGH Current Input LOW Current Input LOW Current Bus Hold Sustain Current High Impedance Output Current Clamp Diode Voltage Output Drive Current Input Hysteresis Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level Standard Input, VCC = Max. Bus Hold Input(4), VCC = Max. Standard Input, VCC = Min. Bus Hold Input(4), VCC = Min. Bus Hold Input(4), VCC = Min. VCC = Max. VCC = Max. VCC = Min., IIN = –18 mA VCC = Max.(3), VOUT = 2.5V Min. Typ(2) Max. Units 0.8 1 ±100 –1 ±100 V V µA µA µA µA µA 2.0 VIN = VCC VIN = VCC VIN = GND VIN = GND VIN = 2.0V VIN = 0.8V VOUT = VCC VOUT = GND –50 +50 –0.7 –50 1 –1 –1.2 –180 100 µA µA V mA mV Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25°C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. Pins with Bus Hold are identified in the pin description. 5. This specification does not apply to bi-directional functionalities with Bus Hold. 292 PS2050A 04/12/96 PI74FCT162Q245T LOW NOISE 16-BIT BIDIRECTIONAL TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Output Drive Characteristics (Over the Operating Range) Test Conditions(1) Parameters Description IODL IODH Output LOW Current Output HIGH Current (3) VCC = 5V, VIN = VIH OR VIL, VOUT = 1.5V VCC = 5V, VIN = VIH OR VIL, VOUT = 1.5V(3) Min. Typ(2) Max. Units 36 -100 — -166 — -200 mA mA Output Drive Characteristics (Over the Operating Range) Test Conditions(1) Parameters Description Min. Typ(2) Max. Units VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL IOH = –12.0 mA 2.4 3.3 — V VOL Output LOW Voltage VCC = Min., VIN = VIH or VIL IOL = 12 mA — 0.4 0.55 V Capacitance (TA = 25°C, f = 1 MHz) Parameters(4) CIN COUT Description Test Conditions Typ Max. Units Input Capacitance Output Capacitance VIN = 0V VOUT = 0V 4.5 5.5 6 8 pF pF Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25°C ambient and maximum loading. 3. Not more than one output should be tested at one time. Duration of the test should not exceed one second. 4. This parameter is determined by device characterization but is not production tested. 293 PS2050A 04/12/96 PI74FCT162Q245T LOW NOISE 16-BIT BIDIRECTIONAL TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Parameters Description Test Conditions(1) Min. Typ(2) Max. Units ICC Quiescent Power Supply Current VCC = Max. VIN = GND or VCC 0.1 500 µA ∆ICC Supply Current per Input @ TTL HIGH VCC = Max. VIN = 3.4V(3) 0.5 1.5 mA ICCD Supply Current per Input per MHz(4) VCC = Max., Outputs Open XOE = xDIR = GND One Bit Toggling 50% Duty Cycle VIN = VCC VIN = GND 60 100 µA/ MHz IC Total Power Supply Current(6) VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle XOE = xDIR = GND One Bit Toggling VIN = VCC VIN = GND 0.6 1.5(5) mA VIN = 3.4V VIN = GND 0.9 2.3(5) VIN = VCC VIN = GND 2.4 4.5(5) VIN = 3.4V VIN = GND 6.4 16.5(5) VCC = Max., Outputs Open fI = 2.5 MHZ 50% Duty Cycle XOE = xDIR = GND 16 Bits Toggling Notes: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 5.0V, +25°C ambient. 3. Per TTL driven input (VIN = 3.4V); all other inputs at Vcc or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested. 6. IC =IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI) ICC = Quiescent Current ∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fI = Input Frequency NI = Number of Inputs at fI All currents are in milliamps and all frequencies are in megahertz. 294 PS2050A 04/12/96 PI74FCT162Q245T LOW NOISE 16-BIT BIDIRECTIONAL TRANSCEIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Switching Characteristics over Operating Range Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ tSK(o) (1) 162Q245T 162Q245AT 162Q245CT 162Q245DT 162Q245ET Com. Com. Com. Com. Com Description Conditions Min Max Min Max Min Max Min Max Min Max Propagation Delay A to B, B to A Output Enable Time XOE to A or B Output Disable Time(3) xOE to A or B Output Enable Time XDIR to A or B(3) Output Disable Time xDIR to A or B(3) Output Skew(4) CL = 50 pF RL = 500Ω 1.5 7.0 1.5 4.6 1.5 4.1 1.5 3.8 1.5 3.2 ns 1.5 9.5 1.5 6.2 1.5 5.8 1.5 5.0 1.5 4.4 ns 1.5 7.5 1.5 5.0 1.5 4.8 1.5 4.3 1.5 4.0 ns 1.5 9.5 1.5 6.2 1.5 5.8 1.5 5.0 1.5 4.8 ns 1.5 7.5 1.5 5.0 1.5 4.8 1.5 4.3 1.5 4.0 ns — 0.5 — 0.5 — 0.5 — 0.5 — 0.5 ns Unit Notes: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. This parameter is guaranteed but not production tested. 4. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design. Pericom Semiconductor Corporation 2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com 295 PS2050A 04/12/96