Datenblatt-Suchmaschine für elektronische Bauteile |
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54LVX4245_993 Datenblatt(PDF) 5 Page - National Semiconductor (TI) |
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54LVX4245_993 Datenblatt(HTML) 5 Page - National Semiconductor (TI) |
5 / 8 page AC Electrical Characteristics Symbol Parameters T A = −55˚C to +125˚C T A = −55˚C to +125˚C Units C L =50 pF C L =50 pF V CCA =5V (Note 6) V CCA =5V (Note 6) V CCB = 3.3V (Note 7) V CCB = 2.7V Min Max Min Max t PHL Propagation Delay 1.0 7.5 1.0 8.5 ns t PLH A to B 1.0 7.5 1.0 8.5 t PHL Propagation Delay 1.0 8.5 1.0 9.0 ns t PLH B to A 1.0 8.5 1.0 9.0 t PZL Output Enable Time 1.0 9.5 1.0 10.0 ns t PZH OE to B 1.0 9.5 1.0 10.0 t PZL Output Enable Time 1.0 8.0 1.0 8.0 ns t PZH OE to A 1.0 8.0 1.0 8.0 t PHZ Output Disable Time 1.0 7.5 1.0 7.5 ns t PLZ OE to B 1.0 7.5 1.0 7.5 t PHZ Output Disable Time 0.5 7.0 0.5 7.0 ns t PLZ OE to A 0.5 7.0 0.5 7.0 t OSHL Output to Output t OSLH Skew (Note 8) 1.5 1.5 ns Data to Output Note 6: Voltage Range 5.0V is 5.0V ±0.5V. Note 7: Voltage Range 3.3V is 3.3V ±0.3V. Note 8: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH to LOW (tOSHL) or LOW to HIGH (tOSLH). Parameter guaranteed by design. Capacitance Symbol Parameter Max Units Conditions C IN Input Capacitance 10 pF V CC = Open C I/O Input/Output 12 pF V CCA = 5.0V Capacitance V CCB = 3.3V C PD Power Dissipation 50 pF V CCA = 5.0V Capacitance V CCB = 3.3V CPD is measured at 10 MHz 8-Bit Dual Supply Translating Transceiver The LVX4245 is a dual supply device capable of bidirectional signal translation. This level shifting ability provides an efficient interface between low voltage CPU local bus with memory and a standard bus defined by 5V I/O levels. The device control inputs can be controlled by either the low voltage CPU and core logic or a bus arbitrator with 5V I/O levels. Manufactured on a sub-micron CMOS process, the LVX4245 is ideal for mixed voltage applications using 3.3V devices and 5V buses or IC’s. DS101021-3 www.national.com 5 |
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