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PI74LVTC16244
3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
Product Features
* Advanced low power CMOS design for 2.7V to 3.6V VCC operation * Supports 5V input/output tolerance in mixed signal mode operation * Function compatible with LVT family of products * Balanced 24mA output drive * Typical VOLP (Output Ground Bounce) <0.8V at VCC=3.3V, TA=25C * Ioff and Power Up/Down 3-State support live insertion * Latch-up performance exceeds 200mA Per JESD78 * ESD protection exceeds JESD 22 - 2000V Human-Body Model (A114-B) - 200V Machine Model (A115-A) * Available Packages (Pb-free available): - 48-pin 240-mil wide plastic TSSOP (A48) - 48-pin 300-mil wide plastic SSOP (V48) * Industrial Temperature: -40C to +85C
Product Description
Pericom Semiconductor's PI74LVTC series of logic circuits are produced using the Company's advanced CMOS technology, achieving industry leading speed. The PI74LVTC16244 is a non-inverting 16-bit buffer and line driver designed for low-voltage 2.7V to 3.6V VCC operation, with the capability of interfacing to the 5V system environment. This 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. When VCC is between 0 to 1.5V during power up or power down, the device is in the high-impedance state. To ensure the highimpedance state above 1.5V, 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 device fully supports live-insertion with its Ioff and power-up/ down 3-state. The Ioff circuitry disables the outputs when the power is off, preventing the backflow of damaging current through the device. Power-up/down 3-state places the outputs in the highimpedance state during power up or power down, preventing driver conflict.
Logic Block Diagram
1OE 1A1 1 47 2
3OE 1Y1 3A1
25 36 13
3Y1
1A2
46
3
1Y2
3A2
35
14
3Y2
1A3
44
5
1Y3
3A3
33
16
3Y3
1A4
43
6
1Y4
3A4
32
17
3Y4
2OE 2A1
48 41 8 2Y1 9
4OE 4A1
24 30 19
4Y1
2A2
40
2Y2
4A2
29
20
4Y2
2A3
38
11
2Y3
4A3
27
22
4Y3
2A4
37
12
2Y4
4A4
26
23
4Y4
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Truth Table(4)
Inputs xOE L L H
Notes: 4. H = High Signal Level L = Low Signal Level X = Don't Care or Irrelevant Z = High Impedance
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PI74LVTC16244 3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Supply voltage range, VCC ............................ -0.5V to +6.5V Input voltage range, VI(1) ............................... -0.5V to +6.5V Voltage range applied to any output in the high-impedance or power-off state, VO(1) ..... -0.5V to +6.5V Voltage range applied to any output in the active state, VO(1), (2) ............................... -0.5V to VCC +0.5V Input clamp current, IIK (VI <0) ................................... -50mA Output clamp current, IOK (VO <0) .............................. -50mA Continous Output Current IO ........................................ 50mA Continous Current through each VCC or GND pin ............ 100mA Package thermal impedance, JA(3): package A ....... 104C/W package V ... 94C/W Storage Temperature range, Tstg .................... -65C to 150C
Notes: 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. 1. Input negative-voltage and output voltage ratings may be exceeded if the input and output clamp current ratings are observed. 2. This value is limited to 6.5V maximum. 3. The package thermal impedance is calculated in accordance with JESD 51.
Product Pin Description
Pin Name xOE xAx xYx GND VC C Inputs 3- State Outputs Ground Power De s cription 3- State Output Enable Inputs (Active LOW)
Product Pin Configuration
1OE 1Y1 1Y2 GND 1Y3 1Y4 VCC 2Y1 2Y2 GND 2Y3 2Y4 3Y1 3Y2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39
2OE 1A1 1A2 GND 1A3 1A4 VCC 2A1 2A2 GND 2A3 2A4 3A1 3A2 GND 3A3 3A4 VCC 4A1 4A2 GND 4A3 4A4 3OE
48-Pin A, V
38 37 36 35 34 33 32 31 30 29 28 27 26 25
Outputs xAx H L X xYx H L Z
GND 3Y3 3Y4 VCC 4Y1 4Y2 GND 4Y3 4Y4 4OE
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PS8652A
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PI74LVTC16244 3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
Recommended Operating Conditions(5)
M in. VC C VIH VIL VI VO Supply Voltage High- level Input Voltage Low- level Input Voltage Input Voltage Output Voltage High or Low State 3- State VC C = 2.7V VC C = 3.0V to 3.6V VC C = 2.7V VC C = 3.0V to 3.6V Operating VC C = 2.7V to 3.6V VC C = 2.7V to 3.6V 0 0 0 2.7 2.0 0.8 5.5 VC C 5.5 -12 - 24 12 24 10 15 0 - 40 +85 ns/V s/V C mA V M a x. 3.6 Units
IO H High- level output current IO L Low- level output current t/v Input transition rise or fall rate t/VC C Power- up ramp rate TA Operating free- air temperature
Notes: 5. All unused inputs must be held at VCC or GND to ensure proper device operation.
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PI74LVTC16244 3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C)
Parame te rs VIK De s cription Clamp Diode Voltage VC C = 2.7V VC C = 2.7V to 3.6V VO H Output High Voltage VC C = 2.7V VC C = 3V VC C = 2.7V to 3.6V VO L Output Low Voltage VC C = 2.7V VC C = 3V II IO FF IO Z IO ZPU IO ZPD IC C IC C Input Leakage Current Power Off Output Leakage
Current
Te s t Conditions II = -18mA IO H = -100A IO H = -12mA IO H = -12mA IO H = -24mA IO L = 100A IO L = 12mA IO L = 12mA IO L = 24mA VI = 0V to 5.5V VI or VO = 0V to 5.5V VO = 0V to 5.5V, VO = 0.5V to 5.5V, OE = don't care VO = 0.5V to 5.5V, OE = don't care VI = VC C or GND 3.6V VI 5.5V One input at VC C - 0.6V(6) Other inputs at VC C or GND IO = 0
M in. VC C -0.2V 2.2 2.4 2.2
M a x. -1.2V
Units
V 0 .2 0.4 0.4 0.55 5 5 5 5 5 100 100
VC C = 0V to 3.6V VC C = 0V VC C = 2.7V to 3.6V VC C = 0V to 1.5V VC C = 1.5V to 0V VC C = 2.7V to 3.6V VC C = 2.7V to 3.6V
3- State Output Leakage Current Power- Up 3- State Current Power- Down 3- State Current Quiescent Power Supply Current Increase in IC C
A
Notes: 6. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
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PI74LVTC16244 3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
Capacitance
Parame te rs CI CO C PD De s cription Input Capacitance Output Capacitance Power Dissipation Capacitance (8) Te s t Conditions VCC = 3.3V, VI = VCC or GND VCC = 3.3V, VO = VCC or GND VCC = 3.3V, VI = 0V or VCC, f =10 MHz Typ.(7) 3.7 7 15 pF Units
Notes: 7. All typical values are measured at VCC = 3.3V, TA = 25C. 8. CPD is defined as the value of the internal equivalent capacitance which is derived from dynamic operating current sumption (ICCD) at no output loading and operating at 50% duty cycle, CPD is related to ICCD dynamic operating expression: ICCD= (CPD)(VCC)(fIN)+(ICCstatic)
concurrent by the
Switching Characteristics Over Operating Range
VCC = 3.3V 0.3V Parame te rs D e s cription From (Input) To (Output) CL = 50pF, RL = 500Ohm M in. tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(O) Propagation Delay A Y 1.0 1.0 1.0 1.0 1.0 1.0 Typ.(9) 2.5 2.5 2.9 3.0 2.5 2.4 M ax. 3.4 3.4 4.2 4.2 4.0 3.9 0.5 VCC = 2.7V CL = 50pF, RL = 500Ohm M in. M a x. 3.8 3.8 5.0 5.0 4.7 4.3 ns Units
O utput Enable Time
OE
Y
O utput Disable Time O utput to O utput Skew(10)
OE
Y
Notes: 9. All typical values are measured at VCC = 3.3V, TA = 25C. 10. Skew between any two outputs, switching in the same direction.
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PS8652A
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PI74LVTC16244 3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
PARAMETER MEASUREMENT INFORMATION VCC = 2.7V and 3.3V 0.3V
6V From Output Under Test
(See Note A)
500
S1
Open GND
Te s t tPLH/tPHL tPLZ/tPZL tPHZ/tPZH
S1 Open 6V GND
CL = 50pF
500
Load Circuit
tW 2.7V Input 1.5V 1.5V 0V
Voltage Waveforms Pulse Duration
Output Control (Low Level Enabling)
2.7V 1.5V tPZL 1.5V tPZH 1.5V tPLZ 3V VOL+0.3V tPHZ 1.5V VOH -0.3V VOL VOH 0V 0V
2.7V Input 1.5V tPLH 1.5V 1.5V 0V tPHL VOH Output 1.5V VOL
Output Waveform 1 S1 at 6V (see Note B)
Output Waveform 2 S1 at GND (see Note B)
Voltage Waveforms Propagation Delay Times
Voltage Waveforms Enable and Disable Times
Figure 1. Load Circuit and Voltage Waveforms
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 impulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50W, tR 2.5ns, tF 2.5ns. D. The outputs are measured one at a time with one transition per measurement.
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PS8652A
05/19/03
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PI74LVTC16244 3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
Packaging Mechanical: 48-pin TSSOP (A)
48
.236 .244
6.0 6.2
1
.488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE
.004 0.09 .008 0.20 0.45 .018 0.75 .030 .319 BSC 8.1
X.XX X.XX
DENOTES DIMENSIONS IN MILLIMETERS
.0197 BSC 0.50
.007 .010 0.17 0.27
.002 .006 0.05 0.15
Packaging Mechanical: 48-pin SSOP (V)
48
.291 .299 7.39 7.59
.395 .420 10.03 10.67
Gauge Plane .010 0.25 1 .620 .630 15.75 16.00 .02 0.51 .04 1.01
.008 0.20 Nom.
.015 0.381 x 45 .025 0.635
.110 2.79 Max .025 BSC 0.635 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .008 0.20 .0135 0.34
0-8
.008 0.20 .016 0.40
7
PS8652A
05/19/03
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PI74LVTC16244 3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
Ordering Information
Orde ring Code PI74LVTC16244A PI74LVTC16244AE PI74LVTC16244V PI74LVTC16244VE Package Code A A V V Package Type 48- pin, 240- mil wide plastic TSSOP (A) Pb- free, 48- pin, 240- mil wide plastic TSSOP (A) 48- pin, 300- mil wide plastic SSOP (V) Pb- free, 48- pin, 300- mil wide plastic SSOP (V)
Notes: 1. Thermal characteristics can be found on the company web site at http://www.pericom.com/packaging/mechanicals.php 2. X = Tape/Reel
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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PS8652A 05/19/03

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