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Part: PI74LVTCH16244V
Category:
Logic
Description: 3.3V 16-Bit Buffer/line Driver W/3-State Outputs
Company: Pericom Semiconductor Corporation
Datasheet: Download PI74LVTCH16244V datasheet File size : 31 kB
Request For quote: Find where to buy PI74LVTCH16244V
Datasheet text preview:
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 1 2109876543212109876543210987654321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LVTCH16244
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 VOGB (Output Ground Bounce) <0.8V at VCC=3.3V, TA=25°C · Ioff and Power Up/Down 3-State support live insertion · Bus Hold on data inputs eliminates the need for external pull-up/down resistors · 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: -40°C to +85°C
Product Description
Pericom Semiconductor's PI74LVTC series of logic circuits are pro duced using Pericom's advanced CMOS technology, achieving industry leading speed. The PI74LVTCH16244 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 busoriented receivers and transmitters. The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. The PI74LVTCH16244 has "Bus Hold" which retains the data input's last valid logic state whenever the data input goes to highimpedance, preventing "floating" inputs and eliminating the need for pull-up/down resistors. 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 1 1A1 47 46 2 3 1Y1 3OE 25 3A1 36 35 13 14 3Y1
1A2
1Y2
3A2
3Y2
1A3
44 43
5 6
1Y3
3A3
33 32
16 17
3Y3
1A4
1Y4
3A4
3Y4
2OE 2A1
48 41 40 8 2Y1 9
4OE 4A1
24 30 29 19 20
4Y1
2A2
2Y2
4A2
4Y2
2A3
38 37
11 2Y3 12
4A3
27 26
22 23
4Y3
2A4
2Y4
4A4
4Y4
1
PS8650A
05/19/03
Truth Table
xOE L L H
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LVTCH16244 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 ......... 104°C/W package V .. 94°C/W Storage Temperature range, Tstg ............ 65°C to 150°C 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
(4)
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
GND
Inputs xAx H L X
Outputs xYx H L Z
3Y3 3Y4 VCC 4Y1 4Y2 GND 4Y3 4Y4 4OE
Notes: 4. H = High Signal Level L = Low Signal Level X = Don't Care or Irrelevant Z = High Impedance
2
PS8650A
05/19/03
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LVTCH16244 3.3V 16-Bit Buffer/Line Driver with 3-State Outputs
Recommended Operating Conditions(5)
M in. VCC VIH VIL VI VO Supply Voltage High- level Input Voltage Low- level Input Voltage Input Voltage Output Voltage High or Low State 3- State IOH High- level output current IOL Low- level output current t/v Input transition rise or fall rate t/VCC Power- up ramp rate TA Operating free- air temperature 150 40 85 VCC = 2.7V VCC = 3.0V to 3.6V VCC = 2.7V VCC = 3.0V to 3.6V Operating VCC = 2.7V to 3.6V VCC = 2.7V to 3.6V 0 0 0 2.7 2.0 0.8 5.5 VCC 5.5 12 24 12 24 10 ns/V µs/V °C mA M a x. 3.6 Units V
Notes: 5.All unused inputs must be held at VCC or GND to ensure proper device operation.
3
PS8650A
05/19/03
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