Features: • PI74FCT16543T, PI74FCT162543T and PI74FCT162H543T are high-speed, low power devices with high current drive.
• VCC = 5V ±10%
• Hysteresis on all inputs
• Packages available: 56-pin 240 mil wide plastic TSSOP (A) 56-pin 300 mil wide plastic SSOP (V)
• Bus Hold retains last active state during 3-state
• Eliminates the need for external pull-up resistorsPinout
SpecificationsStorage Temperature ................................................................. 55°C to +125°C
Ambient Temperature with Power Applied ................................ 40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... 0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ....... 0.5V to +7.0V
DC Input Voltage ......................................................................... 0.5V to +7.0V
DC Output Current ................................................................................... 120 mA
Power Dissipation ......................................................................................... 1.0W
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.
DescriptionPericom Semiconductor's PI74FCT series of logic circuits are produced in the Company's advanced 0.6 micron CMOS technology, achieving industry leading speed grades.
The PI74FCT16543T, PI74FCT162543Tand PI74FCT162H543T are 16- bit latched transceivers organized with two sets of eight D-type latches with separate input and output controls for each set.
For data flow from A to B, for example, the A-to-B Enable (xCEAB) input must be LOW in order to enter data from xAx or to take data from xBx, as indicated in the Truth Table. With xCEAB LOW, a LOW signal makes the A-to-B latches transparent; a subsequent LOW-to-HIGH transition of the xLEAB signal puts the A latches in the storage mode and their outputs no longer change the A inputs. With xCEAB and xOEAB both LOW, the 3-state B output buffers are active and reflect the data present at the output of the A latches. Control of data from B to A is similar, but uses the xCEBA, xLEBA, and xOEBA inputs.
The PI74FCT16543T output buffers are designed with a Power-Off disable allowing "live insertion"of boards when used as backplane drivers.
The PI74FCT162543T has ±24 mA balanced output drivers. It is designed with current limiting resistors at its outputs to control the output edge rate resulting in lower ground bounce and undershoot.
This eliminates the need for external terminating resistors for most interface applications.
The PI74FCT162H543T has "Bus Hold" which retains the input's last state whenever the input goes to high-impedance preventing "floating" inputs and eliminating the need for pull-up/down resistors.
PI74FCT162H543T Data Sheet
