PI74FCT16827T/162827/162H827T PI74FCT16827T 20-BIT BUFFERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT162827T PI74FCT162H827T 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Fast CMOS 20-Bit Buffers Product Features: Common Features: • PI74FCT16827T, PI74FCT162827T, and PI74FCT2H827T are high-speed, low power devices with high current drive • VCC = 5V ±10% • Hysteresis on all inputs • Packages available: – 56-pin 240 mil wide plastic TSSOP (A) – 56-pin 300 mil wide plastic SSOP (V) PI74FCT16827T 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 PI74FCT162827T Features: • Balanced output drivers: ±24 mA • Reduced system switching noise • Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V, TA = 25°C PI74FCT162H827T 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 micron CMOS technology, achieving industry leading speed grades. The PI74FCT16827T, PI74FCT162827T, and PI74FCT162H827T are 20-bit wide bus drivers designed to provide buffering and highperformance bus interfacing for wide data/address paths or buses with parity. Two pair of nanded output enable controls allow the devices to be operated as two 10-bit buffers or as one 20-bit buffer. Signal pins are arranged in a flow-through organization for ease of layout and hysteresis is designed into all inputs to improve noise margin. The PI74FCT16827T output buffers are designed with a Power-Off disable function allowing “live insertion” of boards when the devices are used as backplane drives. The PI74FCT162827T 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 PI74FCT162H827T 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 1OE1 2OE1 1OE2 2OE2 1 Y1 1A1 2 Y1 2A1 To 9 other channels To 9 other channels 1 PS2041A 03/11/96 PI74FCT16827T/162827/162H827T 20-BIT BUFFERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Product Pin Configuration 1OE1 1Y1 1Y2 GND 1Y3 1Y4 VCC 1Y5 1Y6 1Y7 GND 1Y8 1Y9 1Y10 2Y1 2Y2 2Y3 GND 2Y4 2Y5 2Y6 VCC 2Y7 2Y8 GND 2Y9 2Y10 2OE1 Product Pin Description 1 2 56 55 1OE2 3 4 5 6 7 8 9 54 53 52 51 50 49 48 1A2 10 47 11 46 12 56-PIN 45 V56 44 13 A56 14 43 15 42 16 41 17 40 18 39 19 38 20 37 21 36 22 35 23 34 24 33 32 25 26 31 27 30 28 29 1A7 Pin Name Description xOEx Output Enable Inputs (Active LOW) (1) xAx Data Inputs xYx 3-State Outputs Note: 1. For the PI74FCT162H827T, these pins have “Bus Hold.” All other pins are standard, outputs, or I/Os. 1A1 GND 1A3 1A4 VCC 1A5 1A6 Truth Table(1) GND 1A8 1A9 1A10 2A1 2A2 2A3 GND 2A4 2A5 2A6 VCC 2A7 2A8 GND Inputs 1. Outputs xOE1 xOE2 xAx xYx L L H X L L X H L H X X L H Z Z H = High Voltage Level L = Low Voltage Level X = Don't Care Z = High Impedance 2A9 2A10 2OE2 2 PS2041A 03/11/96 PI74FCT16827T/162827/162H827T 20-BIT BUFFERS 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 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 Test Conditions(1) 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. 3 PS2041A 03/11/96 PI74FCT16827T/162827/162H827T 20-BIT BUFFERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT16827T 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 PI74FCT162827T/162H827T 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. 4 PS2041A 03/11/96 PI74FCT16827T/162827/162H827T 20-BIT BUFFERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Power Supply Characteristics Test Conditions(1) Parameters Description 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 2.5 mA ICCD Supply Current per Input per MHz(4) VCC = Max., Outputs Open OE1 = OE2 = GND One Input Toggling 50% Duty Cycle VIN = VCC VIN = GND 60 100 µA/ MHz IC Total Power Supply Current(6) VCC = Max., Outputs Open fCP = 10 MHZ 50% Duty Cycle OE1 = OE2 = GND fI = 5 MHZ One Bit Toggling VCC = Max., Outputs Open fCP = 10 MHZ 50% Duty Cycle OE1 = OE2 = GND Eight Bits Toggling fI = 2.5 MHZ 50% Duty Cycle VIN = VCC VIN = GND 0.6 1.5(5) mA VIN = 3.4V VIN = GND 0.9 2.3(5) VIN = VCC VIN = GND 3.0 5.5(5) VIN = 3.4 VIN = GND 8.0 20.5(5) 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. 5 PS2041A 03/11/96 PI74FCT16827T/162827/162H827T 20-BIT BUFFERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT16827T Switching Characteristics over Operating Range 16827AT 16827BT Com. 16827CT Com. 16827DT Com. 16827ET Com. Com. Parameters Description Conditions(1) Min Max Min Max Min Max Min Max Min Max Unit tPLH tPHL Propagation Delay CL = 50 pF RL = 500Ω CL = 300 pF(3) RL = 500Ω CL = 50 pF RL = 500Ω CL = 300 pF(3) RL = 500Ω CL = 5 pF(3) RL = 500Ω CL = 50 pF RL = 500Ω 1.5 8.0 1.5 5.0 1.5 4.4 1.5 3.8 1.5 3.2 ns XAX to XYX 1.5 15.0 1.5 13.0 1.5 10.0 1.5 7.5 1.5 7.0 ns 1.5 12.0 1.5 8.0 1.5 7.0 1.5 5.0 1.5 4.8 ns 1.5 23.0 1.5 15.0 1.5 14.0 1.5 9.0 1.5 9.0 ns 1.5 9.0 1.5 6.0 1.5 5.7 1.5 4.3 1.5 4.0 ns 1.5 10.0 1.5 7.0 1.5 6.0 1.5 4.3 1.5 4.0 ns — 0.5 — 0.5 — 0.5 — 0.5 — 0.5 ns tPZH tPZL tPHZ tPLZ tSK(O) Output Enable Time XOEX to XYX Output Disable Time(3) OEN to YN Output Skew (4) PI74FCT162827T Switching Characteristics over Operating Range (1) 162827AT 162827BT 162827CT 162827DT 162827ET Com. Com. Com. Com. Com. Parameters Description Conditions Min Max Min Max Min Max Min Max Min Max Unit tPLH tPHL Propagation Delay CL = 50 pF RL = 500Ω CL = 300 pF(3) RL = 500Ω CL = 50 pF RL = 500Ω CL = 300 pF(3) RL = 500Ω CL = 5 pF(3) RL = 500Ω CL = 50 pF RL = 500Ω 1.5 8.0 1.5 5.0 1.5 4.4 1.5 3.8 1.5 3.2 ns XAX to XYX 1.5 15.0 1.5 13.0 1.5 10.0 1.5 7.5 1.5 7.0 ns 1.5 12.0 1.5 8.0 1.5 7.0 1.5 5.0 1.5 4.8 ns 1.5 23.0 1.5 15.0 1.5 14.0 1.5 9.0 1.5 9.0 ns 1.5 9.0 1.5 6.0 1.5 5.7 1.5 4.3 1.5 4.0 ns 1.5 10.0 1.5 7.0 1.5 6.0 1.5 4.3 1.5 4.0 ns — 0.5 — 0.5 — 0.5 — 0.5 — 0.5 ns tPZH tPZL tPHZ tPLZ tSK(O) Output Enable Time XOEX to XYX Output Disable Time(3) OEN to YN 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. 6 PS2041A 03/11/96 PI74FCT16827T/162827/162H827T 20-BIT BUFFERS 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT162H827T Switching Characteristics over Operating Range 162H827AT 162H827BT Com. Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(O) 162H827CT Com. 162H827DT Com. 162H827ET Com. Com. Description Conditions(1) Min Max Min Max Min Max Min Max Min Max Unit Propagation Delay XAX to XYX CL = 50 pF RL = 500Ω CL = 300 pF(3) RL = 500Ω CL = 50 pF RL = 500Ω CL = 300 pF(3) RL = 500Ω CL = 5 pF(3) RL = 500Ω CL = 50 pF RL = 500Ω 1.5 8.0 1.5 5.0 1.5 4.4 1.5 3.8 1.5 3.2 ns 1.5 15.0 1.5 13.0 1.5 10.0 1.5 7.5 1.5 7.0 ns 1.5 12.0 1.5 8.0 1.5 7.0 1.5 5.0 1.5 4.8 ns 1.5 23.0 1.5 15.0 1.5 14.0 1.5 9.0 1.5 9.0 ns 1.5 9.0 1.5 6.0 1.5 5.7 1.5 4.3 1.5 4.0 ns 1.5 10.0 1.5 7.0 1.5 6.0 1.5 4.3 1.5 4.0 ns — 0.5 — 0.5 — 0.5 — 0.5 — 0.5 ns Output Enable Time XOEX to XYX Output Disable Time(3) OEN to YN 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 7 PS2041A 03/11/96