PI74FCT16541/162541/162H541T PI74FCT16541T 16-BIT BUFFER/LINE DRIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT162541T PI74FCT162H541T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 16-Bit Octal Buffer/Line Drivers Product Features Common Features • PI74FCT16541T, PI74FCT162541T, and PI74FCT162H541T are high-speed, low power devices with high current drive • VCC = 5V ±10% • Hysteresis on all inputs • Packages available – 48-pin 240 mil wide plastic TSSOP (A48) – 48-pin 300 mil wide plastic SSOP (V48) PI74FCT16541T Features • High output drive: IOH = –32 mA; IOL = 64 mA • Power off disable outputs permit “live insertion” • Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA = 25°C PI74FCT162541T Features • Balanced output drivers: ±24 mA • Reduced system switching noise • Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V, TA = 25°C PI74FCT162H541T Features • Bus Hold retains last active bus state during 3-state • Eliminates the need for external pull-up resistors Product Description Pericom Semiconductor’s PI74FCT series of logic circuits are produced in the Company’s advanced 0.6/0.8 micron CMOS technology, achieving industry leading speed grades. The PI74FCT16541T, PI74FCT162541T, and PI74FCT162H541T are non-inverting 16-bit buffer/line drivers designed for applications driving high capacitance loads and low impedance backplanes. These high-speed, low-power devices offer bus/backplane interface capability and a flow-through organization for ease of board layout. They are designed with three-state controls to operate in a DualByte, or a single 16-bit word mode. The PI74FCT16541T output buffers are designed with a PowerOff disable allowing “live insertion” of boards when used as backplane drivers. The PI74FCT162541T has ±24 mA balanced output drivers. It is designed with current limiting resistors at its outputs to control the output edge rate resulting in lower ground bounce and undershoot. This eliminates the need for external terminating resistors for most interface applications. The PI74FCT162H541T has “Bus Hold” which retains the input’s last state whenever the input goes to high-impedance preventing “floating” inputs and eliminating the need for pull-up/down resistors. Logic Block Diagram 1OEA 2OEA 1OEB 2OEB 1A0 1Y0 2A0 2Y0 1A1 1Y1 2A1 2Y1 1A2 1Y2 2A2 2Y2 1A3 1Y3 2A3 2Y3 1A4 1Y4 2A4 2Y4 1A5 1Y5 2A5 2Y5 1A6 1Y6 2A6 2Y6 1A7 1Y7 2A7 2Y7 229 PS2037A 03/11/96 PI74FCT16541/162541/162H541T 16-BIT BUFFER/LINE DRIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product Pin Description Truth Table Pin Name Description XOE 3-State Output Enable Inputs (Active LOW) xAx Inputs(1) xYx 3-State Outputs GND Ground VCC Power Note: 1. For the PI74FCT162H541T, these pins have “Bus Hold.” All other pins are standard, outputs, or I/Os. Inputs(1) XOE L L H Note: xAx L H X Outputs(1) xYx H L Z 1. H = High Voltage Level X = Don’t Care L = Low Voltage Level Z = High Impedance Product Pin Configuration 1OEA 1 48 1OEB 1Y 0 2 47 1 A0 1 Y1 3 46 1 A1 GND 4 45 GND 1Y 2 5 44 1A2 1 Y3 6 43 1 A3 VCC 7 42 VCC 1Y4 8 41 1A4 1 Y5 9 40 1 A5 GND 10 39 GND 1Y 6 11 38 1A6 37 1 A7 36 2 A0 48-PIN V48 A48 1 Y7 12 2 Y0 13 2 Y1 14 35 2 A1 GND 15 34 GND 2Y 2 16 33 2A2 2 Y3 17 32 2 A3 VCC 18 31 VCC 2Y4 19 30 2A4 2 Y5 20 29 2 A5 GND 21 28 GND 2 Y6 22 27 2 A6 2 Y7 23 26 2 A7 2OEA 24 25 2OEB 230 PS2037A 03/11/96 PI74FCT16541/162541/162H541T 16-BIT BUFFER/LINE DRIVERS 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%) Test Conditions(1) Parameters Description VIH VIL IIH IIH IIH IIH IIL IIL IIL IIL IBHH IBHL IOZH(5) IOZL(5) VIK IOS IO VH Input HIGH Voltage Input LOW Voltage Input HIGH Current Input HIGH Current Input HIGH Current Input HIGH Current Input LOW Current Input LOW Current Input LOW Current Input LOW Current Bus Hold Sustain Current High-Impedance Output Current (3-STATE OUTPUTS) Clamp Diode Voltage Short Circuit Current Output Drive Current Input Hysteresis Guaranteed Logic HIGH Level Guaranteed Logic LOW Level Standard Input, VCC = Max. Standard I/O, VCC = Max. Bus Hold Input(4), VCC = Max. Bus Hold I/O(4), VCC = Max. Standard Input, VCC = Min. Standard I/O, VCC = Min. Bus Hold Input(4), VCC = Min. Bus Hold I/O(4), VCC = Min. Bus Hold Input(4), VCC = Min. VCC = Max. VCC = Max. VCC = Min., IIN = –18 mA VCC = Max.(3), VOUT = GND VCC = Max.(3), VOUT = 2.5V Min. Typ(2) Max. Units 0.8 1 1 ±100 ±100 –1 –1 ±100 ±100 V V µA µA µA µA µA µA µA µA µA 1 –1 µA µA –1.2 –200 –180 V mA mA mV 2.0 VIN = VCC VIN = VCC VIN = VCC VIN = VCC VIN = GND VIN = GND VIN = GND VIN = GND VIN = 2.0V VIN = 0.8V VOUT = 2.7V VOUT = 0.5V –50 +50 –80 –50 –0.7 –140 100 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. 231 PS2037A 03/11/96 PI74FCT16541/162541/162H541T 16-BIT BUFFER/LINE DRIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT16541T Output Drive Characteristics (Over the Operating Range) Test Conditions(1) Parameters Description VOH Output HIGH Voltage VCC = Min., VIN = VIH or VIL VOL IOFF Output LOW Voltage Power Down Disable VCC = Min., VIN = VIH or VIL VCC = 0V, VIN or VOUT ≤4.5V IOH = –3.0 mA IOH = –15.0 mA IOH = –32.0 mA IOL = 64 mA Min. Typ(2) 2.5 2.4 2.0 3.5 3.5 3.0 0.2 — 0.55 ±100 V µA Min. Typ(2) Max. Units 2.4 3.3 0.3 115 –115 0.55 150 –150 V V mA mA — Max. Units V PI74FCT162541T/162H541T Output Drive Characteristics (Over the Operating Range) Test Conditions(1) Parameters Description VOH VOL IODL IODH Output HIGH Voltage Output LOW Voltage Output LOW Current Output HIGH Current VCC = Min., VIN = VIH or VIL IOH = –24.0 mA VCC = Min., VIN = VIH or VIL IOL = 24 mA VCC = 5V, VIN = VIH OR VIL, VOUT = 1.5V(3) VCC = 5V, VIN = VIH OR VIL, VOUT = 1.5V(3) 60 –60 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 shorted 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. 232 PS2037A 03/11/96 PI74FCT16541/162541/162H541T 16-BIT BUFFER/LINE DRIVERS 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 = 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 = 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 = GND 16 Bits Toggling Notes: 1. For Max. or Min. conditions, 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. 233 PS2037A 03/11/96 PI74FCT16541/162541/162H541T 16-BIT BUFFER/LINE DRIVERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT16541T Switching Characteristics over Operating Range 16541T Com. 16541AT Com. 16541CT Com. 16541DT Com. 16541ET Com. Description Conditions(1) Min Max Min Max Min Max Min Max Min Max Unit t PLH t PHL Propagation Delay XAX to XYX CL = 50 pF RL = 500Ω 1.5 8.0 1.5 4.8 1.5 4.3 1.5 3.6 1.5 3.2 ns t PZH t PZL t PHZ t PLZ Output Enable Time xOE to xAx or xYx Output Disable Time(3) xOE to xAx or xYx 1.5 10.0 1.5 6.2 1.5 5.8 1.5 4.8 1.5 4.4 ns 1.5 9.5 1.5 5.6 1.5 5.2 1.5 4.0 1.5 4.0 ns tSK(o) Output Skew(4) — 0.5 — 0.5 — 0.5 — 0.5 — 0.5 ns Parameters PI74FCT162541T Switching Characteristics over Operating Range 162541T Com. 162541AT Com. 162541CT Com. 162541DT Com. 162541ET Com. Description Conditions(1) Min Max Min Max Min Max Min Max Min Max Unit t PLH t PHL t PZH t PZL Propagation Delay XAX to XYX Output Enable Time xOE to xAx or xYx CL = 50 pF RL = 500Ω 1.5 8.0 1.5 4.8 1.5 4.3 1.5 3.6 1.5 3.2 ns 1.5 10.0 1.5 6.2 1.5 5.8 1.5 4.8 1.5 4.4 ns t PHZ t PLZ tSK(o) Output Disable Time(3) xOE to xAx or xYx Output Skew(4) 1.5 9.5 1.5 5.6 1.5 5.2 1.5 4.0 1.5 4.0 ns — 0.5 — 0.5 — 0.5 — 0.5 — 0.5 ns Parameters PI74FCT162H541T Switching Characteristics over Operating Range 162H541T Com. Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o) 162H541AT 162H541CT 162H541DT 162H541ET Com. Com. Com. Com. Description Conditions(1) Min Max Min Max Min Max Min Max Min Max Unit Propagation Delay to XYX Output Enable Time xOE to xAx or xYx CL = 50 pF RL = 500Ω 1.5 8.0 1.5 4.8 1.5 4.3 1.5 3.6 1.5 3.2 ns 1.5 10.0 1.5 6.2 1.5 5.8 1.5 4.8 1.5 4.4 ns 1.5 9.5 1.5 5.6 1.5 5.2 1.5 4.0 1.5 4.0 ns — 0.5 — 0.5 — 0.5 — 0.5 — 0.5 ns XAX Output Disable Time(3) xOE to xAx or xYx Output Skew(4) Notes: 1. See test circuit and wave forms. 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 234 PS2037A 03/11/96