DATASHEET ISL59424, ISL59445 FN7456 Rev 3.00 1GHz Triple Multiplexing Amplifiers September 30, 2011 The ISL59424, ISL59445 are 1GHz bandwidth multiplexing Features amplifiers designed primarily for video input switching. Triple 2:1 and 4:1 Multiplexers for RGB These MUX-amps exhibit a fixed gain of 1 and also feature a Internally Set Gain-of-1 high speed three-state to enable the output of multiple devices to be wired together. All logic inputs have pull-downs High Speed Three-state Outputs (HIZ) to ground and may be left floating. The EN pin, when pulled Power-down Mode (EN) high, sets the ISL59424, ISL59445 in to low current Latch Enable (ISL59424) mode-consuming just 15mW. An added feature in the 5V Operation ISL59424 is a latch enable function (LE) that allows independent logic control using a common logic bus. When 1200 V/sec Slew Rate LE is high the last logic state is preserved. 1GHz Bandwidth TABLE 1. CHANNEL SELECT LOGIC TABLE ISL59424 Latched Select Pin (ISL59424) S0 ENABLE HIZ LE OUTPUT Pb-Free (RoHS Compliant) 0 0 0 0 INO (A, B, C) Applications 1 0 0 0 IN1 (A, B, C) HDTV/DTV Analog Inputs X 1 X X Power Down Video Projectors X 0 1 X High Z Computer Monitors X 0 0 1 Last S0 State Set-top Boxes Preserved Security Video Broadcast Video Equipment TABLE 2. CHANNEL SELECT LOGIC TABLE ISL59445 Ordering Information S1 S0 ENABLE HIZ OUTPUT PART NUMBER PART PACKAGE PKG. 0 0 0 0 IN0 (A, B, C) (Notes 1, 2, 3) MARKING (Pb-Free) DWG. 0 1 0 0 IN1 (A, B, C) ISL59424IRZ 59424 IRZ 24 Ld QFN MDP0046 1 0 0 0 IN2 (A, B, C) ISL59424IRZ-T13 59424 IRZ 24 Ld QFN MDP0046 1 1 0 0 IN3 (A, B, C) ISL59424IRZ-T7 59424 IRZ 24 Ld QFN MDP0046 X X 1 X Power Down ISL59445IRZ 59445 IRZ 32 Ld QFN L32.5x6A XX 0 1 High Z ISL59445IRZ-T13 59445 IRZ 32 Ld QFN L32.5x6A ISL59445IRZ-T7 59445 IRZ 32 Ld QFN L32.5x6A ISL59445IRZ-EVAL Evaluation Board NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL59424 and ISL59445. For more information on MSL please see techbrief TB363. 4. 32 LD QFN Exposed Pad Size 2.48 x 3.40mm. FN7456 Rev 3.00 Page 1 of 14 September 30, 2011ISL59424, ISL59445 Pinouts ISL59424 ISL59445 (24-LD QFN) (32-LD QFN) TOP VIEW TOP VIEW IN1A 1 25 ENABLE IN0B 1 19 ENABLE NIC 2 24 NIC NIC 2 18 OUTA A = 1 IN1B 3 23 V+ IN0C 3 17 V+ A = 1 NIC 4 22 OUTA GNDB 4 16 OUTB A = 1 IN1C 5 21 V- IN1A 5 15 V- A = 1 GNDB 6 20 OUTB THERMAL GNDC 6 14 OUTC PAD THERMAL A = 1 IN2A 7 19 OUTC PAD IN1B 7 13 S0 NIC 8 18 S0 A = 1 IN2B 9 17 S1 THERMAL PAD INTERNALLY CONNECTED TO V-. PAD MUST BE TIED TO V- LATCHED ON HIGH LE THERMAL PAD INTERNALLY CONNECTED TO V-. NIC = NO INTERNAL CONNECTION PAD MUST BE TIED TO V- NIC = NO INTERNAL CONNECTION Functional Diagram ISL59424 Functional Diagram ISL59445 EN0 S0 EN0 D Q L S0 IN0 (A, B, C) C EN1 OUT IN0 (A, B, C) DECODE IN1 (A, B, C) OUT EN1 D Q S1 IN1 (A, B, C) L DECODE C IN2 (A, B, C) EN2 AMPLIFIER BIAS IN3 (A, B, C) EN3 LE HIZ AMPLIFIER BIAS HIZ ENABLE ENABLE A LOGIC HIGH ON LE WILL LATCH THE LAST S0 STATE. THIS LOGIC STATE IS PRESERVED WHEN CYCLING HIZ OR ENABLE FUNCTIONS. FN7456 Rev 3.00 Page 2 of 14 September 30, 2011 NIC 24 GNDA 8 23 IN0A IN1C 9 22 NIC NIC 10 21 NIC NIC 11 LE 12 20 HIZ IN2C 10 32 GNDA GNDC 11 31 IN0A IN3A 12 30 NIC NIC 13 29 IN0B IN3B 14 28 NIC NIC 15 27 IN0C IN3C 16 26 HIZ