1. general description the IP4786CZ32S is designed to protect hi gh-definition multim edia interface (hdmi) transmitter host interfaces. it includes hdmi 5 v overcurrent / overvoltage protection, display data channel (ddc) buffering and de coupling, hot plug detect (hpd), backdrive protection, consumer electronic control (cec) buffering and decoupling, and ? 8kv contact electrostatic discharge (esd) protection for all i/os in accordance with the iec 61000-4-2, level 4 standard. the IP4786CZ32S incorporates transmission line clamping (tlc) technology on the high-speed transition-minimized differential si gnaling (tmds) lines to simplify routing and help reduce impedance discontinuities . all tmds lines are protected by an impedance-matched diode configuration that minimizes impedance discontinuities caused by typical shunt diodes. the enhanced 60 ma overcurrent / overvoltage linear regulator guarantees hdmi-compliant 5 v output voltage levels with up to 6.5 v inputs. the ddc lines use a new buffering concept whic h decouples the internal capacitive load from the external capacitive load for use with standard complementary metal oxide semiconductor (cmos) or low voltage transistor-transistor logic (lvttl) i/o cells down to 1.8 v. this buffering also redrives the ddc and cec signals, allowing the use of longer or cheaper hdmi cables with a higher capacitance. the internal hot plug detect module simplifies the application of the hdmi transmitter to control the hot plug signal. all lines provide appropriate integrated pu ll-ups and pull-downs fo r hdmi compliance and backdrive protection to guarantee that hdmi interface signals are not pulled down if the system is powered down or enters standby mode. only a single external capacitor is required for operation. 2. features and benefits ? hdmi high-speed, 340 mhz, deep color and hdmi ethernet and audio return channel (heac) compatible ? impedance matched 100 ? differential transmission line esd protection for tmds lines ( ? 10 ? ). no printed-circuit board (pcb) pre-compensation required ? simplified flow-throu gh routing utilizing less overall pcb space ? ddc capacitive decoupling between syst em side and hdmi connector side and buffering to drive cable with high capacitive load (> 700 pf/25 m) ? all external i/o lines with esd protection of at least ? 8 kv in accordance with the iec 61000-4-2, level 4 standard ? hot plug detect module IP4786CZ32S dvi and hdmi interf ace esd and overcurrent protection, ddc/cec buffering, hot plug de tect and backdrive protection rev. 2 ? 11 july 2013 product data sheet hxqfn32
IP4786CZ32S all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 11 july 2013 2 of 34 nxp semiconductors IP4786CZ32S dvi and hdmi interface esd and overcurrent protection ? cec buffering and isolation, with integrated backdrive-protected 26 k ? pull-up ? robust esd protection without degradation after repeated esd strikes ? highest integration in a small footprint, pcb level, optimized rf routing, 32-pin hxqfn leadless package 3. applications ? the IP4786CZ32S can be used for a wide range of hdmi source devices, consumer and computing electronics: ? tablet and notebook pcs ? portable media players ? digital still cameras (dsc) ? high-definition (hd) and standard-definition (sd) blu-ray and dvd players ? set-top boxes (stb) ? pc graphic cards ? game consoles ? hdmi picture performance quality enhancer modules ? digital visual interface (dvi) 4. ordering information table 1. ordering information type number package name description version IP4786CZ32S hxqfn32 plastic thermal enhanced extremely thin quad flat package; no leads; 32 terminals; body 4 ? 4 ? 0.5 mm sot1318-1
IP4786CZ32S all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 11 july 2013 3 of 34 nxp semiconductors IP4786CZ32S dvi and hdmi interface esd and overcurrent protection 5. functional diagram fig 1. functional diagram n m 001aan369 cec driver esd 8 kv esd tmds_ckC_sys tmds_ckC_con 2 kv cec_con cec_sys 26 k 10 k 3.3 v voltage regulator esd 8 kv ddc driver esd hdmi_5v0_con hdmi_5v0_con 8 kv esd 2 kv ddc_clk_con ddc_clk_sys 1.85 k 3.65 k ddc driver esd 8 kv esd 2 kv ddc_dat_con ddc_dat_sys 1.85 k 3.65 k hot plug esd 8 kv esd 2 kv hotplug_det_con hotplug_det_sys 100 k 100 k 100 k 2 kv enable encec enlim enref current limiter esd 8 kv esd 2 kv hdmi_5v0_con power management unit 2 kv esd 8 kv clamp esd_bypass esd 2 kv esd 2 kv cec_stby tmds_ck+_sys tmds_ck+_con tmds_d0C_sys tmds_d0C_con tmds_d0+_sys tmds_d0+_con tmds_d1C_sys tmds_d1C_con tmds_d1+_sys tmds_d1+_con tmds_d2C_sys tmds_d2C_con tmds_d2+_sys tmds_d2+_con 100 k ibias 1..n vref 1..m current-/voltage- references esd 8 kv utility_con v cc(5v0) v cc(sys) v cc(sys) v cc(sys) v cc(5v0) v cc(5v0) v cc(sys) v cc(sys) v cc(5v0) v cc(sys)
IP4786CZ32S all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2013. all rights reserved. product data sheet rev. 2 ? 11 july 2013 4 of 34 nxp semiconductors IP4786CZ32S dvi and hdmi interface esd and overcurrent protection 6. pinning information 6.1 pinning 6.2 pin description fig 2. pin configuration IP4786CZ32S d d d , 3 & |