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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT16827T/162827/162H827T PI74FCT16827T 20-BIT BUFFERS
PI74FCT162827T PI74FCT162H827T
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 = 25C PI74FCT162827T Features: * Balanced output drivers: 24 mA * Reduced system switching noise * Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V, TA = 25C 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 1OE2
2OE1 2OE2
1A1
1Y1
2A1
2Y1
To 9 other channels
To 9 other channels
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PI74FCT16827T/162827/162H827T 20-BIT BUFFERS
Product Pin Configuration
Product Pin Description
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.
1OE1 1Y1 1Y2
1 2 3 4 5 6 7 8 9
56 55 54 53 52 51 50 49 48
1OE2 1A1 1A2
GND
1Y3 1Y4
GND
1A3 1A4
VCC
1Y5 1Y6 1Y7
VCC
1A5 1A6 1A7
GND
1Y8 1Y9 1Y10 2Y1 2Y2 2Y3
GND
2Y4 2Y5 2Y6
VCC
2Y7 2Y8
GND
2Y9 2Y10 2OE1
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
GND
1A8 1A9 1A10 2A1 2A2 2A3
Truth Table(1)
Inputs Outputs
xOE1 L L H X 1.
xOE2 L L X H
xAx L H X X
xYx L H Z Z
GND
2A4 2A5 2A6
VCC
2A7 2A8
H = High Voltage Level L = Low Voltage Level X = Don't Care Z = High Impedance
GND
2A9 2A10 2OE2
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PI74FCT16827T/162827/162H827T 20-BIT BUFFERS
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature .................................................................... -65C to +150C Ambient Temperature with Power Applied .................................... -40C to +85C 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 = -40C to +85C, 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. 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 0.8 1 1 100 100 -1 -1 100 100 -50 +50 1 -1 -0.7 -140 100 -1.2 -200 -180 Typ(2) Max. Units V V A A A A A A A A A A A V mA mA mV
-80 -50
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, +25C 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.
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PI74FCT16827T/162827/162H827T 20-BIT BUFFERS
PI74FCT16827T Output Drive Characteristics (Over the Operating Range)
Parameters Description VOH Output HIGH Voltage Test Conditions(1) VCC = Min., VIN = VIH or VIL IOH = -3.0 mA IOH = -15.0 mA IOH = -32.0 mA IOL = 64 mA Min. 2.5 2.4 2.0 -- Typ(2) 3.5 3.5 3.0 0.2 -- Max. Units V
VOL IOFF
Output LOW Voltage Power Down Disable
VCC = Min., VIN = VIH or VIL VCC = 0V, VIN or VOUT 4.5V
0.55 100
V A
PI74FCT162827T/162H827T Output Drive Characteristics (Over the Operating Range)
Parameters Description VOH VOL IODL IODH Output HIGH Voltage Output LOW Voltage Output LOW Current Output HIGH Current Test Conditions(1) 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) Min. 2.4 60 -60 Typ(2) 3.3 0.3 115 -115 Max. 0.55 150 -150 Units V V mA mA
Capacitance (TA = 25C, f = 1 MHz)
Parameters(4) CIN COUT Description Input Capacitance Output Capacitance Test Conditions VIN = 0V VOUT = 0V Typ 4.5 5.5 Max. 6 8 Units 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, +25C 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.
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PI74FCT16827T/162827/162H827T 20-BIT BUFFERS
Power Supply Characteristics
Parameters Description ICC ICC ICCD Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) VCC = Max. VCC = Max. VCC = Max., Outputs Open OE1 = OE2 = GND One Input Toggling 50% Duty Cycle 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 Test Conditions(1) VIN = GND or VCC VIN = 3.4V(3) VIN = VCC VIN = GND Min. Typ(2) 0.1 0.5 60 Max. 500 2.5 100 Units A mA A/ MHz
IC
Total Power Supply Current(6)
VIN = VCC VIN = GND VIN = 3.4V VIN = GND
0.6
1.5(5)
mA
0.9
2.3(5)
VIN = VCC VIN = GND VIN = 3.4 VIN = GND
3.0
5.5(5)
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, +25C 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.
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PI74FCT16827T/162827/162H827T 20-BIT BUFFERS
PI74FCT16827T Switching Characteristics over Operating Range
16827AT Com. 16827BT Com. Min Max 16827CT Com. Min Max 16827DT Com. Min Max 16827ET Com. Min Max Unit
Parameters tPLH tPHL
Description Propagation Delay
XAX to XYX
Conditions(1) CL = 50 pF RL = 500 CL = 300 pF(3) RL = 500 CL = 50 pF RL = 500 CL = 300 pF(3) RL = 500 CL = 5 pF(3) RL = 500 CL = 50 pF RL = 500
Min
Max
1.5 1.5 1.5 1.5 1.5 1.5 --
8.0 15.0 12.0 23.0 9.0 10.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
5.0 13.0 8.0 15.0 6.0 7.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
4.4 10.0 7.0 14.0 5.7 6.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
3.8 7.5 5.0 9.0 4.3 4.3 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
3.2 7.0 4.8 9.0 4.0 4.0 0.5
ns ns ns ns ns ns ns
tPZH tPZL
Output Enable Time
XOEX to XYX
tPHZ tPLZ
Output Disable Time(3) OEN to YN
tSK(O)
Output Skew (4)
PI74FCT162827T Switching Characteristics over Operating Range
162827AT Com.
(1)
162827BT Com. Min Max
162827CT Com. Min Max
162827DT Com. Min Max
162827ET Com. Min Max Unit
Parameters tPLH tPHL
Description Propagation Delay
XAX to XYX
Conditions
Min
Max
tPZH tPZL
Output Enable Time
XOEX to XYX
tPHZ tPLZ
Output Disable Time(3) OEN to YN
CL = 50 pF RL = 500 CL = 300 pF(3) RL = 500 CL = 50 pF RL = 500 CL = 300 pF(3) RL = 500 CL = 5 pF(3) RL = 500 CL = 50 pF RL = 500
1.5 1.5 1.5 1.5 1.5 1.5 --
8.0 15.0 12.0 23.0 9.0 10.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
5.0 13.0 8.0 15.0 6.0 7.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
4.4 10.0 7.0 14.0 5.7 6.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
3.8 7.5 5.0 9.0 4.3 4.3 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
3.2 7.0 4.8 9.0 4.0 4.0 0.5
ns ns ns ns ns ns ns
tSK(O)
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.
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PS2041A 03/11/96
PI74FCT162H827T Switching Characteristics over Operating Range
162H827AT Com. 162H827BT Com. Min Max 162H827CT Com. Min Max 162H827DT Com. Min Max 162H827ET Com. Min Max Unit
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT16827T/162827/162H827T 20-BIT BUFFERS
Parameters tPLH tPHL
Description Propagation Delay XAX to XYX
Conditions(1) CL = 50 pF RL = 500 CL = 300 pF(3) RL = 500 CL = 50 pF RL = 500 CL = 300 pF(3) RL = 500 CL = 5 pF(3) RL = 500 CL = 50 pF RL = 500
Min
Max
1.5 1.5 1.5 1.5 1.5 1.5 --
8.0 15.0 12.0 23.0 9.0 10.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
5.0 13.0 8.0 15.0 6.0 7.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
4.4 10.0 7.0 14.0 5.7 6.0 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
3.8 7.5 5.0 9.0 4.3 4.3 0.5
1.5 1.5 1.5 1.5 1.5 1.5 --
3.2 7.0 4.8 9.0 4.0 4.0 0.5
ns ns ns ns ns ns ns
tPZH tPZL
Output Enable Time XOEX to XYX
tPHZ tPLZ
Output Disable Time(3) OEN to YN
tSK(O)
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
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