PI74VCX16244 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 16-Bit Buffer/Driver with 3-State Outputs Features Description • The PI74VCX Family is designed for low voltage operation, CD = 1.8V to 3.6V • 3.6V Tolerant Inputs and Outputs • Supports Live Insertion • Balanced Drive, ±24mA • Uses patented Noise Reduction Circuitry • Typical VOLP (Output Ground Bounce) <0.6V at VDD = 2.5V, TA = 25ºC • Typical VOHV (Output VOH Undershoot) < -0.6V at VDD = 2.5V, TA = 25ºC • Power-Off high impedance inputs and outputs • Industrial operation at –40°C to +85°C • Packaging (Pb-free & Green available): – 48-pin 240-mil wide plastic TSSOP (A) Pericom Semiconductor’s PI74VCX16244 buffer/driver is designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides true outputs and symmetrical active-low output-enable (OE) inputs. To ensure the high-impedance state during power up or power down, OE should be tied to Vcc through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The PI74VCX family is I/O Tolerant, allowing it to operate in 1.8/3.6V systems. Block Diagram 1OE 1A1 1A2 1A3 1A4 2OE 2A1 2A2 2A3 2A4 1 3OE 47 2 46 3 44 5 43 6 1Y1 3A1 1Y2 3A2 1Y3 3A3 1Y4 3A4 48 4OE 41 8 40 9 38 11 37 12 2Y1 4A1 2Y2 4A2 2Y3 4A3 2Y4 4A4 1 25 36 13 35 14 33 16 32 17 3Y1 3Y2 3Y3 3Y4 24 30 19 29 20 27 22 26 23 4Y1 4Y2 4Y3 4Y4 PS8160C 09/27/04 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Pin Description Pin Name nOE nAx nYx GND VCC Truth Table(1) Inputs Description 3-State Output Enable Inputs (Active LOW) Inputs 3-State Outputs Ground Power 1 48 2OE 1Y 1 2 47 1A 1 1Y 2 3 46 1A 2 GND 4 45 GND 1Y 3 5 44 1A 3 1Y 4 6 43 1A 4 VCC 7 42 VCC 2Y 1 8 41 2A 1 2Y 2 9 40 2A 2 GND 10 39 GND 2Y 3 11 38 2A 3 2Y 4 12 37 2A 4 3Y 1 13 36 3A 1 3Y 2 14 35 3A 2 GND 15 34 GND 3Y 3 16 33 3A 3 3Y 4 17 32 3A 4 VCC 18 31 VCC 4Y 1 19 30 4A 1 4Y 2 20 29 4A 2 GND 21 28 GND 4Y 3 22 27 4A 3 4Y 4 23 26 4A 4 4OE 24 25 3OE nOE nAX nYx L H H L L L H X Z Notes: 1. H = High Signal Level L = Low Signal Level X = Don’t Care or Irrelevant Z = High Impedance Pin Configuration 1OE Outputs 2 PS8160C 09/27/04 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Supply Voltage Range, VDD ........................................... 0.5V to 4.6V Input Voltage Range, VI ............................................... -0.5V to 4.6V Output Voltage Range, VO (3-Stated) ........................... -0.5V to 4.6V Output Voltage Range, VO(1) (Active) ..................... -0.5V to VCC+0.5 DC Input Diode Current (IIK) VI<0V ...................................... -50mA DC Output Diode Current (IOK) VO<0V .................................................................................. -50mA VO>VDD ............................................................................... +50mA DC Output Source/Sink Current (IOH/IOL) .............................. ±50mA DC VDD or GND Current per Supply Pin (ICC or GND) ...... ±100mA Storage Temperature Range, Tstg .............................. –65°C to 150°C 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. Recommended Operating Conditions(2) M in. M a x. Operating 1.8 3.6 Data Retention Only 1.2 3.6 2.0 VDD Supply voltage VIH High- level input voltage VDD = 2.7V to 3.6V VIL Low- level input voltage VDD = 2.7V to 3.6V VI Input voltage VO Output voltage IO Output current in IOH/IOL ∆t/∆v TA Input transistion rise or fall rate(3) Operating free- air temperature 0.8 - 0.3 3.6 Active State 0 VDD Off State 0 3.6 VDD = 3.0V to 3.6V VDD = 2.3V to 2.7V VDD = 1.8V Units V ± 24 ±18 ±6 mA 0 10 ns/V −40 85 C Notes 1. Absolute maximum of IO must be observed. 2. Unused control inputs must be held HIGH or LOW to prevent them from floating. 3 As measured between 0.8V and 2.0V, VDD = 3.0V. 3 PS8160C 09/27/04 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Electrical Characteristics over Recommended Operating Free-Air Temperature Range (unless otherwise noted) DC Characteristics (2.7V<VDD ≤ 3.6V) Parame te r VIH HIGH Level Input Voltage VIL LOW Level Input Voltage Conditions VDD HIGH Level Output Voltage 2.7 - 3.6 LOW Level Output Voltage IOH = −12mA 2.7 IOH = −18mA 3.0 2.7 0.4 IOL = 18mA 3- STATE Output Leakage 0 ≤ VO ≤ 3.6V VI = VIH or VIL IOFF Power- OFF Leakage Current 0 ≤ (VI,VO) ≤ 3.6V Increase in IDD per input V 2.2 IOL = 12mA IOZ ∆IDD 2.4 0.2 VI = 0.0V, VI = 3.6V Quiescent Supply Current 2.2 2.7 - 3.6 Input Leakage Current IDD Units 0.8 IOL = 100µA 3.0 IOL = 24mA II M ax. VDD - 0.2 IOH = −24mA VOL Typ. 2.0 IOH = −100µA VOH M in. 0.4 0.55 3.6 ± 5.0 2.7 - 3.6 ±10 0 10 VI = VDD to GND 20 VDD ≤ (VI,VO) ≤ 3.6V 2.7 - 3.6 VIH = VDD - 0.6V, Other inputs at VDD or Gnd µA ± 20 750 4 PS8160C 09/27/04 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Electrical Characteristics over Recommended Operating Free-Air Temperature Range (unless otherwise noted) (continued from previous page) DC Characteristics (2.3V ≤ VDD ≤ 2.7V) Parame te rs VIH HIGH Level Input Voltage VIL LOW Level Input Voltage Conditions HIGH Level Output Voltage M in. 2.0 IOH = - 12mA 1.8 2.3 2.3 - 2.7 IOL = 12mA Input Leakage Current VI = 0.0V, VI = 2.7V IOZ 3- STATE Output Leakage 0 ≤ VO ≤ 3.6V VI = VIH or VIL IOFF Power- OFF Leakage Current 0 ≤ (VI,VO) ≤ 3.6V IDD Quiescent Supply Current VI = VDD or GND VDD ≤ (VI,VO) ≤ 3.6V V 1.7 0.2 0.4 2.3 IOL = 18mA II Units VDD - 0.2 IOH = - 6mA IOL = 100µA LOW Level Output Voltage M ax. 0.7 2.3 - 2.7 IOH = - 18mA VOL Typ. 1.6 IOH = - 100µA VOH VDD 0.6 2.7 ± 5.0 2.3 - 2.7 ±10 0 10 µA 20 2.3 - 2.7 ± 20 DC Characteristics (1.8V ≤ VDD ≤ 2.3V) Parame te rs VIH HIGH Level Input Voltage VIL LOW Level Input Voltage VOH HIGH Level Output Voltage Conditions VDD 1. 8 - 2 . 3 IOH = - 100 µA LOW Level Output Voltage Typ. M a x. 0.2 x VDD V 1.4 IOL = 100 µA 1.8 IOL = 6 mA 0.2 0.3 Input Leakage Current VI = 0.0V, VI = 1.8V ± 5.0 IOZ 3- STATE Output Leakage 0 ≤ VO ≤ 3.6V VI = VIH or VIL ± 10 IOFF Power- OFF Leakage Current 0 ≤ (VI,VO) ≤ 3.6V IDD Quiescent Supply Current II 0 10 VI = VDD or GND 1.8 20 VDD ≤ (VI,VO) ≤ 3.6V 1.8 ± 20 5 Units 0.7 x VDD VDD - 0.2 IOH = - 6 mA VOL M in. µA PS8160C 09/27/04 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 AC Electrical Characteristics(1) TA = -40°C to +85°C, CL = 30pF, RL = 500Ω Symbol Parame te r VDD = 3.3V ±0.3V VDD = 2.5V ±0.2V VDD = 1.8V M in. M a x. M in. M a x. M in. M a x. tPHL, tPLH Prop Delay 0.8 2.5 1.0 3.0 1.5 5.0 tPZL, tPZH Output Enable Time 0.8 3.5 1.0 4.1 1.5 6.5 tPLZ, tPHZ Output Disable Time 0.8 3.5 1.0 3.8 1.5 5.0 tOSHL tOSLH Output to Output Skew(2) 0.5 0.5 Units ns 0.5 Notes 1. For CL = 50pF add approximatly 300ps to AC maximum specification 2. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH or LOW (tOSHL) or LOW to HIGH (tOSLH). Dynamic Switching Characteristics Symbol Parame te r Conditions VDD TA= +25°C Typical VOLP Quiet Output Dynamic Peak VOL CL = 50pF, VIH= VDD, VIL= 0V 1.8 2.5 3.3 0.25 0.6 0.8 VOLV Quiet Output Dynamic Valley VOL CL = 50pF, VIH= VDD, VIL= 0V 1.8 2.5 3.3 - 0.25 - 0.6 - 0.8 VOHV Quiet Output Dynamic Valley VOH CL = 50pF, VIH= VDD, VIL= 0V 1.8 2.5 3.3 1.5 1.9 2.2 Units V Capacitance Symbol Parame te r Conditions TA = +25ºC Typical CIN Input Capacitance VDD = 1.8V, 2.5V or 3.3V, V1 = 0V or VDD 6 COUT Output Capacitance V1 = 0V or VDD, VDD = 1.8V, 2.5V or 3.3V 7 CPD Power Dissipation Capacitance V1 = 0V or VDD, F = 10MHz VDD = 1.8V, 2.5V or 3.3V 6 Units pF 20 PS8160C 09/27/04 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Test Circuits and Switching Waveforms Switch Position Parameter Measurement Information (VDD = 1.8V - 3.6V) 2 x VDD R1 500Ω From Output Under Test Open RL 500Ω 50pF 3 CL Te s t S1 tpd Open tPLZ/tPZL 2 x VDD tPHZ/tPZH GND GND Pulse Width (See Note A) VDD Low-High-Low Pulse VDD/2 0V tW VDD High-Low-High Pulse Setup, Hold, and Release Timing Data Input tSU Timing Input tH VDD/2 0V VDD VDD/2 0V Propagaton Delay VDD VDD/2 0V VDD VDD/2 Input 0V tPHL tPLH VDD Output VDD/2 VOL tPHL tPLH VDD Opposite Phase Input Transition 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. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50Ω, tr ≤ 2ns, tf ≤ 2ns, measured from 10% to 90%, unless otherwise specified. D. The outputs are measured one at a time with one transition per measurement. VDD/2 0V Enable Disable Timing VDD Output Control (Active LOW) VDD/2 0V tPLZ tPZL VDD Output Waveform 1 S1 at 2xVDD (see Note B) Output Waveform 2 S1 at GND VDD VDD/2 +0.15V tPZH -0.15V VOH VDD/2 0V (see Note B) 7 VOL tPHZ PS8160C 09/27/04 PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 Packaging Mechanical: 48-pin TSSOP (A) 48 .236 .244 1 6.0 6.2 .488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE .004 0.09 .008 0.20 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .0197 BSC 0.50 .002 .006 0.05 0.15 .007 .010 0.17 0.27 0.45 .018 0.75 .030 .319 BSC 8.1 Ordering Information Ordering Code Package Code Package Description PI74VCX16244A A 48-pin TSSOP PI74VCX16244AE A Pb-free & Green, 48-pin TSSOP Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 8 PS8160C 09/27/04