PI3L100 PERICOM | Alldatasheet
Document overview
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- PDF pages: 6
Technical content
Features
- Replaces mechanical relays
- High-performance, low-cost solution for switching between different LAN signals
- Ultra-low quiescent power (0.1µA typical)
- Low crosstalk: –90dB @ 30 MHz
- Low insertion loss or on-resistance: 3W typical
- Single supply operation: 3.3V
- Off isolation: –45dB @ 30 MHz
- Wide bandwidth data rates > 200 MHz
- Packages available: – 16-pin 150 mil wide plastic QSOP (Q) – 16-pin 173 mil wide plastic TSSOP (L) E IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1 S YA YB YC YD VCC1S 16 E2IA0 15 ID03IA1 14 ID14YA 13 YD5IB0 12 IC06IB1 11 IC17YB 10 YC8GND 9 16-Pin W,L
Description
Pericom Semiconductor’s PI3L series of logic circuits are produced using the Company’s advanced submicron CMOS technology. The PI3L100 is a Quad 2:1 multiplexer/demultiplexer LanSwitch with three-state outputs. This device can be used for switching between various standards, such as 10 Base-T and 100 Base-T. Generally, this part can be used to replace mechanical relays in low voltage LAN applications that have physical layer, unshielded twisted pair media (UTP) with either CAT 3 or CAT 5 grade cable.
3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PS8504 11/13/00 Capacitance (TA = 25°C, f = 1 MHz) Parameters(1) Description Test Conditions Typ Max. Units C IN Input Capacitance V IN = 0V 3 pF C OFF Capacitance, Switch Off (Y) V IN = 0V 17 pF C ON Capacitance, Switch On V IN = 0V 25 pF C OFF Capacitance, Switch Off (A/B) V IN = 0V 8 pF Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other condi- tions above those indicated in the operational sec- tions of this specification is not implied. Exposure to absolute maximum rating conditions for ex- tended periods may affect reliability. Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for applicable device type. 2. Typical values are at VCC = 3.3V, TA = 25°C ambient temperature. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. V ON (min) value is at VCC = 3.3V, TA = 70°C. sretemaraPn oitpircseD) 1(snoitidnoCtseT. niMp yT )2( .xaMs tinU V HI egatloVHGIHtupnIl eveLHGIHcigoLdeetnarauG0 .2— — V V LI egatloVWOLtupnIl eveLWOLcigoLdeetnarauG5 .0–— 8 .0 IHI tnerruCHGIHtupnIV CC V,.xaM= NI V= CC —— 1 ± mAILI tnerruCWOLtupnIV CC V,.xaM= NI DNG=— — 1 ± I HZO tnerruCtuptuOecnadepmIhgiH0 £ B,A £ V CC —— 1 ± V KI egatloVedoiDpmalCV CC I,.niM= NI Am81–=— 2 .1–V I SO tnerruCtiucriCtrohS )3( V=)A(B,V0=)B(A CC 001— — A m V H sniPlortnoCtasiseretsyHtupnI— 0 51— V m R NO )6(e cnatsiseRnOhctiwS V CC V,.niM= NI I,V0= NO Am84=— 5 7 WV CC V,.niM= NI I,V4.2= NO Am51=— 0 15 1 DR NO hctaMecnatsiseRnOV NI WOL=E,V0.3=— — — Note: 1. This parameter is determined by device characterization but is not production tested.
3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PS8504 11/13/00 Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 3.3V, +25°C ambient. 3. Per TTL driven input (VIN = 3.0V, control inputs only); A and B pins do not contribute to ICC . 4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design. Power Supply Characteristics Parameters Description Test Conditions(1) Min. Typ (2) Max. Units ICC Quiescent Power V CC = Max. V IN = GND or VCC — 0.1 3.0 mA Supply Current D ICC Supply Current per V CC = Max. V IN = 3.4V(3) — — 750 mA Input @ TTL HIGH ICCD Supply Current per V CC = Max., — — 0.25 mA/ Input per MHz(4) Input Pins Open MHz E = GND Control Input Toggling 50% Duty Cycle PI3L100 Com. Parameters Description Conditions (1) Min Typ Max Unit tPLH Propagation Delay(2,3) — — 0.25 ns In to Y tSY Bus Enable Time C L = 50pF 1 — 4.5 ns S to Y R L = 500W tPHZ Bus Disable Time 1 — 4.5 ns tPLZ E to Y X TALK Crosstalk R L = 100W — –90 — dB f = 30 MHz See Figure 2 O IRR Off Isolation R L = 100W — –45 — dB f = 30 MHz B W –3dB Bandwidth R L = 100W — 213 — MHz See Figure 2 tON Turn On Time R L = 100W ———n s tOFF Turn Off Time C L = 35pF — — — ns See Figure 1 Switching Characteristics over Operating Range Notes: 1. See test circuit and waveforms. 2. This parameter is guaranteed but not tested. 3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
3.3V, Wide Bandwidth Quad 2:1, Mux/Demux LanSwitch 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 1234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901 2123456789012 PS8504 11/13/00 LAN Switch The PI3L100 was designed to switch between various standards such as 10Base-T, 100Base-T, 100VG- AnyLAN, and Token Ring. Also general purpose appli- cations such as loopback, line termination, and line clamps that might normally use mechanical relays are also ideal uses for this LAN Switch (see Figure 1). Generally speaking, this LAN Switch can be used for data rates to 200 Mbps and data signal levels from 0V to 3.6V. LAN Standards Data Rate per twisted pair (UTP) 10Base-T 10 Mbps 100Base-T 100 Mbps 100VG-AnyLAN 25 Mbps
Applications
V CC Bias Voltage vs. RON To keep RON to a minimum, it is recommended that the V CC voltage be increased to a voltage between 3.3V and 3.6V. Ideally an input voltage between 0.2V and 3.6V will keep R ON flat. Signal Distortion Distortion of the input signal is equated to 20LOG DR ON /RL. So keeping RON flat as the data signal level varies is critical to low distortion. It should also be noted that increasing the data rate increases harmonic distor- tion which also effects the signal amplitude. Figure 1. Switching Time