this is information on a product in full production. march 2014 docid026023 rev 1 1/23 AS21P2THB low voltage high bandwidth dual single-pole double-throw analog switch datasheet - production data features ? ultra low power dissipation: ?i cc = 1 ? a (max.) at t a = 85 c ? low ?on? resistance: ?r on = 4.8 ? (t a = 25 c) at v cc = 4.3 v ?r on = 5.9 ? (t a = 25 c) at v cc = 3.0 v ? wide operating voltage range: ?v cc (opr.) = 1.65 v to 4.3 v ? 4.3 v tolerant and 1.8 v compatible threshold on digital control input at v cc = 2.3 v to 3.0 v ? typical bandwidth (-3 db) at 800 mhz on all channels ? usb (2.0) high speed (480 mbps) signal switching compliant ? integrated fail safe function ? interrupt function to indicate to the processor that the device is in dedicated port charging mode ? latch-up performance exceeds 500 ma per jesd 78, class ii ? esd performance exceeds jesd22: ? dn pins: 4000-v human body model (a114- a) ? all other pins: 2000-v human body model (a114-a) applications ? wearable ? sport and fitness ? portable equipment description the AS21P2THB is a high-speed cmos low voltage dual analog spdt (single pole double throw) switch or 2:1 mu ltiplexer/de multiplexer switch fabricated in silicon gate c2mos technology. it is designed to operate from 1.65 v to 4.3 v, thus making this device the ideal selection for portab le applications. the sel input is provided to control the switch. the switch ns1 is on (connected to common ports dn) when the sel in put is held high and off (high impedance state exists between the two ports) when sel is held low, the switch ns2 is on (it is connected to common port dn) when the sel input is held low and off (high impedance state exists between the two ports) when sel is held high. AS21P2THB has an integrated fail safe function to withstand over-voltage condition when the device is powered off. the AS21P2THB also has an interrupt pin which sends a signal to the processor when the device is in dedicated port charging mode. additional key features are fast switching speed, break-before- make-delay time and ultralow power consumption. all inputs and outputs are equipped with protection circuits ag ainst static discharge, giving them esd immunity and transient excess voltage. qfn10 (1.8 x 1.4 mm) table 1. device summary order code package packaging AS21P2THB qfn10 (1.8 x 1.4 mm) tape and reel www.st.com
contents AS21P2THB 2/23 docid026023 rev 1 contents 1 pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 dedicated port charging detecti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.1 recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
docid026023 rev 1 3/23 AS21P2THB pin settings 23 1 pin settings figure 1. pin connecti on (top through view) table 2. pin description pin number symbol name and function 1 int interrupt 2 vcc positive supply voltage 3 sel control 4 2s1 independent channel for switch 2 5 2s2 independent channel for switch 2 6 d2 common channel for switch 2 7 gnd ground (0 v) 8 d1 common channel for switch 1 9 1s2 independent channel for switch 1 10 1s1 independent channel for switch 1 , 1 7 9 & |