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IDT74FCT166244ATEB Datasheet(PDF) 1 Page - Integrated Device Technology |
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IDT74FCT166244ATEB Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 9 page Integrated Device Technology, Inc. FUNCTIONAL BLOCK DIAGRAM 1 Y1 1 Y2 1 Y3 1 Y4 1 A1 1 A2 1 A3 1 A4 2 OE 2 A1 2 A2 2 A3 2 A4 2 Y1 2 Y2 2 Y3 2 Y4 2544 drw 01 1 OE 3 OE 3 A1 3 A2 3 A3 3 A4 3 Y1 3 Y2 3 Y3 3 Y4 4 OE 4 A1 4 A2 4 A3 4 A4 4 Y1 4 Y2 4 Y3 4 Y4 2544 drw 02 The IDT logo is a registered trademark of Integrated Device Technology, Inc. MILITARY AND COMMERCIAL TEMPERATURE RANGES OCTOBER 1996 ©1996 Integrated Device Technology, Inc. 5.2 DSC-2544/9 15 FAST CMOS 16-BIT BUFFER/LINE DRIVER IDT54/74FCT16244T/AT/CT/ET IDT54/74FCT162244T/AT/CT/ET IDT54/74FCT166244T/AT/CT IDT54/74FCT162H244T/AT/CT/ET FEATURES: • Common features: – 0.5 MICRON CMOS Technology – High-speed, low-power CMOS replacement for ABT functions – Typical tSK(o) (Output Skew) < 250ps – Low input and output leakage ≤ 1µA (max.) – ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) – Packages include 25 mil pitch SSOP, 19.6 mil pitch TSSOP, 15.7 mil pitch TVSOP and 25 mil pitch Cerpack – Extended commercial range of -40 °C to +85°C • Features for FCT16244T/AT/CT/ET: – High drive outputs (-32mA IOH, 64mA IOL) – Power off disable outputs permit “live insertion” – Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA = 25 °C • Features for FCT162244T/AT/CT/ET: – Balanced Output Drivers: ±24mA (commercial), ±16mA (military) – Reduced system switching noise – Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V,TA = 25 °C • Features for FCT166244T/AT/CT: – Light Drive Balanced Output: ±8mA (commercial), ±6mA (military) – Minimal system switching noise – Typical VOLP (Output Ground Bounce) < 0.25V at VCC = 5V,TA = 25 °C • Features for FCT162H244T/AT/CT/ET: – Bus-Hold retains last active bus state during 3-state – Eliminates the need for external pull up resistors DESCRIPTION: The16-BitBuffer/LineDriverisforbusinterfaceorsignalbuffering applications requiring high speed and low power dissipation. These devices have a flow through pin organization, and shrink packaging to simplify board layout. All inputs are designed with hysteresis for improved noise margin. The three-state controls allow independent 4-bit, 8-bit or combined 16-bit operation. These parts are plug in replacements for 54/74ABT16244 where higher speed, lower noise or lower power dissipation levels are desired. The FCT16244T/AT/CT/ET are ideally suited for driving high capacitance loads (>200pF) and low impedance backplanes. These "high drive" buffers are designed with power off disable capability to allow "live insertion" of boards when used in a backplane interface. The FCT162244T/AT/CT/ET have balanced output current levels and current limiting resistors. These offer low ground bounce, minimal undershoot, and controlled output fall times, reducing the need for external series terminating resistors while still providing very high speed operation for loads of less than 200pF. The FCT166244T/AT/CT are suited for very low noise, point-to-point driving where there is a single receiver, or a very light lumped load (<100pF). The buffers are designed to limit the output current to levels which will avoid noise and ringing on the signal lines without using external series terminating resistors. The FCT162H244T/AT/CT/ET have "Bus-Hold" which re- tains the input's last state whenever the input goes to high impedance. This prevents "floating" inputs and eliminates the need for pull-up/down resistors. |
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