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The FCT16652T 16-bit registered transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power devices are organized as two independent 8-bit bus transceivers with 3-state D-type registers. For example, the xOEAB and xOEBA signals control the transceiver functions.
The xSAB and xSBA control pins are provided to select either real time or stored data transfer. The circuitry used for select control will eliminate the typical decoding glitch that occurs in a multiplexer during the transition between stored and real time data. A low input level selects real-time data and a high level selects stored data.
Data on the A or B data bus, or both, can be stored in the internal D-flip-flops by low-to-high transitions at the appropriate clock pins (xCLKAB or xCLKBA), regardless of the select or enable control pins. Flow-through organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin.
The FCT16652T is ideally suited for driving high capacitance loads and lowimpedance backplanes. The output buffers are designed with power off disable capability to allow "live insertion" of boards when used as backplane drivers.
IDT74FCT16652AT Maximum Ratings
Symbol
Description
Max
Unit
VTERM(2)
Terminal Voltage with Respect to GND
0.5 to +7
V
VTERM(3)
Terminal Voltage with Respect to GND
0.5 to VCC+0.5
V
TSTG
Storage Temperature
65 to +150
°C
IOUT
DC Output Current
60 to +120
mA
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 FCT162XXX Output and I/O terminals. 3. Output and I/O terminals for FCT162XXX.
IDT74FCT16652AT 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 1A (max.) • VCC = 5V ±10% • 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 • Available in SSOP and TSSOP packages
IDT74FCT16652AT Connection Diagram
IDT74FCT16652CT General Description
The FCT16652T 16-bit registered transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power devices are organized as two independent 8-bit bus transceivers with 3-state D-type registers. For example, the xOEAB and xOEBA signals control the transceiver functions.
The xSAB and xSBA control pins are provided to select either real time or stored data transfer. The circuitry used for select control will eliminate the typical decoding glitch that occurs in a multiplexer during the transition between stored and real time data. A low input level selects real-time data and a high level selects stored data.
Data on the A or B data bus, or both, can be stored in the internal D-flip-flops by low-to-high transitions at the appropriate clock pins (xCLKAB or xCLKBA), regardless of the select or enable control pins. Flow-through organization of signal pins simplifies layout. All inputs are designed with hysteresis for improved noise margin.
The FCT16652T is ideally suited for driving high capacitance loads and lowimpedance backplanes. The output buffers are designed with power off disable capability to allow "live insertion" of boards when used as backplane drivers.
IDT74FCT16652CT Maximum Ratings
Symbol
Description
Max
Unit
VTERM(2)
Terminal Voltage with Respect to GND
0.5 to +7
V
VTERM(3)
Terminal Voltage with Respect to GND
0.5 to VCC+0.5
V
TSTG
Storage Temperature
65 to +150
°C
IOUT
DC Output Current
60 to +120
mA
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 FCT162XXX Output and I/O terminals. 3. Output and I/O terminals for FCT162XXX.
IDT74FCT16652CT 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 1A (max.) • VCC = 5V ±10% • 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 • Available in SSOP and TSSOP packages