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USB1T1105AMHX Datasheet(PDF) 2 Page - Fairchild Semiconductor |
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USB1T1105AMHX Datasheet(HTML) 2 Page - Fairchild Semiconductor |
2 / 12 page www.fairchildsemi.com 2 Connection Diagram (Bottom View) Terminal Descriptions Terminal Number Terminal Name I/O Terminal Description 1OE I Output Enable: Active LOW enables the transceiver to transmit data on the bus. When not active the transceiver is in the receive mode (CMOS level is relative to VCCIO) 2 RCV O Receive Data Output: Non-inverted CMOS level output for USB differential Input (CMOS output level is relative to VCCIO). Driven LOW when SUSPN is HIGH; RCV output is stable and preserved during SE0 condition. 3Vp O Single-ended D receiver output VP (CMOS level relative to VCCIO): Used for external detection of SEO, error conditions, speed of connected device; Driven HIGH when no supply connected to VCC and VREG. 4Vm O Single-ended D receiver output Vm (CMOS level relative to VCCIO): Used for external detection of SEO, error conditions, speed of connected device; Driven HIGH when no supply connected to VCC and VREG. 5 SUSPND I Suspend: Enables a low power state (CMOS level is relative to VCCIO). While the SUSPND pin is active (HIGH) it will drive the RCV pin to logic “0” state. 6 MODE I MODE input (CMOS level is relative to VCCIO). A HIGH selects the differential input MODE (Vpo, Vmo) whereas a LOW enables the single-ended MODE (Vo, VFSEO) see Table 2 and Table 3 7VCCIO Supply Voltage for digital I/O pins (1.65V to 3.6V): When not connected the D and D pins are in 3-STATE. This supply bus is totally independent of VCC (5V) and VREG (3.3V). 8NC NC 10, 9 D , D AI/O Data , Data : Differential data bus conforming to the USB standard. 11 Vpo / Vo I Driver Data Input (CMOS level is relative to VCCIO); Schmitt trigger input; see Table 2 and Table 3 12 Vmo / FSEO I Driver Data Input (CMOS level is relative to VCCIO); Schmitt trigger input; see Table 2 and Table 3 13 VREG (3.3V) Internal Regulator Option: Regulated supply output voltage (3.0V to 3.6V) during 5V operation; decoupling capacitor of at least 0.1 PF is required. 14 VCC (5.0V) Internal Regulator Option: Used as supply voltage input (4.0V to 5.5V); can be connected directly to USB line Vbus. |
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