|Description||Fast CMOS 16-bit Buffer/line Driver|
|Company||Integrated Device Technology, Inc.|
|Datasheet||Download IDT54FCT166H244TPA datasheet
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 1µ A (max.) ESD > 2000V per MIL-STD-883, Method > 200V using machine model 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 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 = 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 = 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 = 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
The 16-Bit Buffer/Line Driver is for bus interface or signal buffering 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 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 retains 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.The IDT logo is a registered trademark of Integrated Device Technology, Inc.
Pin Names xOE xAx xYx Description 3State Output Enable Inputs (Active LOW) Data Inputs(1) 3-State Outputs
2544 tbl 01 NOTE: On FCT16xH these pins have "Bus-hold". All other pins are standard inputs, outputs or I/Os.
Symbol Description Max. VTERM(2) Terminal Voltage with Respect to +7.0 GND (3) Terminal Voltage with Respect to VTERM 0.5 to GND VCC +0.5 TSTG Storage Temperature +150 I OUT DC Output Current to +120 Unit °C mANOTE: H = HIGH Voltage Level X = Don't Care L = LOW Voltage Level Z = High Impedance
2544 lnk 03 NOTES: 1. Stresses greater than those listed under ABSOLUTE 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. 2. All device terminals except FCT162XXXT and FCT166XXXT output and I/O terminals. 3. Output and I/O terminals for FCT162XXXT and FCT166XXXT.
Symbol Parameter(1) CIN Input Capacitance COUT Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 3.5 Max. Unit pF 8.0NOTE: 1. This parameter is measured at characterization but not tested.
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (STANDARD PARTS)
Following Conditions Apply Unless Otherwise Specified: Commercial: to +85°C, VCC ± 10%; Military: to +125°C, VCC ± 10%
Symbol VIH VIL L I OZH I OZL VIK VH I CCL I CCH I CCZ Parameter Input HIGH Level Input LOW Level Input HIGH Current (Input pins)(5) Input HIGH Current (I/O pins)(5) Input LOW Current (Input pins)(5) VCC = Max. VCC = Min., IIN = 18mA VCC = Max., VO = GND (3)
Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VI = VCC VI = GND = 0.5V
Input LOW Current (I/O pins)(5) High Impedance Output Current (3-State Output pins) (5) Clamp Diode Voltage Short Circuit Current Input Hysteresis Quiescent Power Supply Current
NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at Vcc 5.0V, +25°C ambient. 3. Not more than one output should be tested at one time. Duration of the test should not exceed one second. 4. Duration of the condition can not exceed one second. 5. The test limit for this parameter = 55°C.
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