ISL54103 Intersil Corporation, ISL54103 Datasheet
ISL54103
Available stocks
Related parts for ISL54103
ISL54103 Summary of contents
Page 1
... Data Sheet PRELIMINARY DDC Accelerator (DDCA) The ISL54103 DDC Accelerator (DDCA dual active pull-up bus terminator designed to improve data transmission speed on the DDC 2-wire serial bus interfaces. The DDCA detects rising input transitions with two internal voltage references and two comparators per channel. After ...
Page 2
... Video Source PC, DVD, Set Top Box, etc. VGA, DVI, HDMI IC Block Diagram 2 ISL54103 Supply Voltage Ground No Connect Active Pull-Up for DDC Signal Active Pull-Up for DDC Signal ISL54103 V DD DDC1 DDC2 GND SDA BUS SIGNALS SCL 1.825mA 175μA 100μ TRIPH ...
Page 3
... Input Voltage Threshold High TRIPH f DDC Max Frequency MAX NSS Noise Spike Suppression (Note Figure 1) (Figure 10) NOTES: 1. Measured as area under triangular waveform above V 3 ISL54103 Recommended Operating Conditions Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Supply Voltage 2.7V to 5.5V +0.3V DD CONDITIONS DDC1 = DDC2 = Open DDC1 = DDC2 = V - 1.0V DD DDC1 = GND ...
Page 4
... TEMPERATURE (°C) FIGURE 1. ACTIVE PULL-UP CURRENT, DDC PIN = 0V 120 110 100 90 VDD = 5. VDD = 2. -60 -40 - TEMPERATURE (°C) FIGURE 3. STANDBY PULL-UP CURRENT, DDC1 0. ISL54103 3.75 2.60 2.45 2.30 2.15 2.00 1.85 1.70 1. 100 FIGURE 2. BOOST PULL-UP CURRENT, DDC PIN = V 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.60 0. 100 VDD = 5.5V VDD = 2.7V ...
Page 5
... LOW. ISL54103 Operation To improve the operation of the DDC where larger bus capacitance exists, the ISL54103 provides active pull-up using switched current sources. When the bus is idle and both lines are HIGH, a standby pull-up current of 100µA is ...
Page 6
... This voltage-time TRIPL combination filters out noise on the signal line. Once the ISL54103 detects a valid rising edge, a 2.2mA boost current pulls the bus line high very quickly (see Figure 8). This boost current turns off when the input level reaches the V threshold and the pull-up current returns to the active level ...
Page 7
... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 7 ISL54103 5-Lead, SOT23, Package Code H5 0.108 (2.75) BSC 3 ...