ISL88694 Intersil Corporation, ISL88694 Datasheet
ISL88694
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ISL88694 Summary of contents
Page 1
... Data Sheet SMBus Accelerator (SMA) The ISL88694 SMBus accelerator (SMA dual active pull-up bus terminator designed to improve data transmission speed on SMBus or similar 2-wire serial bus interfaces. The ISL88694 is also compatible to the I bus. The SMA detects rising input transitions with two internal voltage references and two comparators per channel ...
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... SBS, PCI, Compact PCI, CLK OUT PMCI, ACPI, ICMB, IPMI, IPMB,SMBus 2-Wire. Device 1 IC Block Diagram 2 ISL88694 Supply Voltage Ground No Connect Active Pull-Up for SMBus Active Pull-Up for SMBus DATA IN CLK IN CLK OUT DATA OUT Device N 1.825mA 175µA 100µA ...
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... V Input Voltage Threshold High TRIPH f SMBus Max Frequency MAX NSS Noise Spike Suppression (Note 1) (Figure 10) NOTES: 1. Measured as area under triangular waveform above V 3 ISL88694 Recommended Operating Conditions Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Supply Voltage 2.7V to 5.5V +0.3V DD CONDITIONS SMBus1=SMBus2=Open SMBus1=SMBus2=V -1.0V DD SMBus1=GND; SMBus2=Open SMBus1= Open; SMBus2=GND < ...
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... TEMPERATURE (°C) FIGURE 1. ACTIVE PULL-UP CURRENT. SMBus PIN=0V 120 110 100 90 VDD=5. VDD=2. -60 -40 - TEMPERATURE (°C) FIGURE 3. STANDBY PULL-UP CURRENT. SMBus1,2=V 4 ISL88694 3.75 2.60 2.45 2.30 2.15 2.00 1.85 1.70 1. 100 FIGURE 2. BOOST PULL-UP CURRENT. SMBus PIN = V 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.60 0. 100 -0.5V DD VDD=5.5V VDD=2 ...
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... In order to allow multimaster operation without bus contention necessary to allow each bus to be connected to a positive supply voltage via a current-source or pull-up resistor (see “System Diagram” on page 2). When the bus is free, both lines are HIGH. The output stages of devices 5 ISL88694 (Continued 100 FIGURE ...
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... This voltage-time TRIPL combination filters out noise on the signal line. Once the ISL88694 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 ...
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... 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 ISL88694 5-Lead, SOT23, Package Code H5 0.108 (2.75) BSC 3 ...