TPS2205IDBG4 Datasheet To read data from a slave device, the device must first be ready to transmit data depending on commands already received from the CPU. Data is retrieved from the bus in a similar fashion to a write operation. The host initiates a read by writing to the Transmit Buffer. The data that is then shifted into the Receive Shift Register is the wired-AND of the written data and the data from the slave device. Therefore, in order to read a byte from a slave device the host must write OxFFh. When the Receive Shift Register is full the data is transferred to the Receive Buffer where it can be accessed by the host. Additional bytes can now be read by sending OxFFh again. If the slave device is not ready to transmit, the data received will be identical to that which was transmitted. The Receive Buffer Register can also generate interrupts. The Receive Buffer flag (RBF) is set when data is transferred from the Receive Shift Register and cleared when the host reads the register. If RBF is set, no further transmissions should be made on the l-Wire bus or else data may be lost, as the byte in the Receive Buffer will be overwritten by the next received byte. See the timing diagrams for details of the byte reception operation. Generating a l-Wire reset on the bus is covered under Command Operations. Interrupt flags are explained in further detail under Interrupt Operations. Write and read operations are detailed in the timing diagrams. TPS2205IDBG4 Price| TYPE NO. | DESCRIPTION | VCBO (v) MIN | VCEO (v) *VCER MIN | VEBO (v) MIN | ICBO @ (UA) *IC EO *ICES ***ICEV * ICER | VCB (v) | hF MIN | MAX | @IC (mA) | @ VCE | VCE (S) (v) MAX | @IC (mA) | fT (MHz) *TYP MIN | Cob (pF) *TYP MAX | ton (ns) *TYP MAX | toff (ns) *TYP MAX | NF (dB) *TYP MAX | | 2N5784 2N5785 2N5786 2N5859 2N5861 | NPN AMPUSWITCH NPN AMPUSWITCH NPN AMPUSWITCH NPN CORE DRIVER NPN CORE DRIVER | 80 65 45 80 100 | 65 50 40 40 50 | 50 50 3 5 60 60 | 10+ 10+ 10+ 0 25 030 | 75 60 45 50 50 | 20 20 20 30 25 | 100 100 100 120 100 | 1,000 1,200 1,600 500 500 | 20 20 20 1 0 1 0 | 0.50 0.75 1.00 0.70 0.50 | 1,000 1,200 1,600 1,000 500 | 10 10 10 250 200 | 7 0 7 0 | 35 25 | 60 60 | | | 2N6190 2 N6191 2N6192 2N6193 BC140 | NPN HIGH CURRENT PNP HIGH CURRENT PNP HIGH CURRENT PNP HIGH CURRENT NPN AMPUSWITCH | 80 80 100 100 80 | 80 80 100 100 40 | 60 60 60 60 70 | 10 10 10 10 | 80 80 100 100 60 | 30 60 30 60 40 | 120 240 120 240 250 | 2,000 2,000 2,000 2,000 100 | 20 20 20 20 1 0 | 0.70 0.70 0.70 0.70 1.00 | 2,000 2,000 2,000 2,000 1,000 | 30 30 30 30 50 | 300 300 300 300 25 | 250 | 850 | | | B C141 BC160 BC161 BC300 BC301 | NPN AMPUSWITCH PNPAMPUSWITCH PNPAMPUSWITCH NPN AMPUSWITCH NPN AMPUSWITCH | 100 40 60 120 90 | 60 40 60 80 60 | 70 50 50 70 70 | 010 010 010 002 002 | 60 40 60 60 60 | 40 40 40 40 40 | 250 250 250 240 240 | 100 100 100 150 150 | 1 0 1 0 1 0 10 10 | 1.00 1.00 1.00 0.50 0.50 | 1,000 1,000 1,000 150 150 | 50 50 50 100' 100' | 25 30 30 12' 12' | 250 500 500 | 850 650 650 | | | BC302 BC303 BC304 BC440 BC441 | NPN AMPUSWITCH PNPAMPUSWITCH PNPAMPUSWITCH NPN AMPUSWITCH NPN AMPUSWITCH | 60 85 60 50 70 | 45 60 45 40 60 | 70 60 60 50 50 | 0 02 0 02 0 02 0 10 0 10 | 60 60 60 40 40 | 40 40 40 40 40 | 240 240 240 250 250 | 150 150 150 500 500 | 10 10 10 40 40 | 0.50 0.65 0.65 1.00 1.00 | 150 150 150 1,000 1,000 | 100' 100' 100' 50 50 | 12' 15' 15' | | | | | BC460 BC461 BCW78 BCW80 B D115 | PNPAMPUSWITCH PNPAMPUSWITCH NPN AMPUSWITCH PNPAMPUSWITCH NPN HIGH VOLTAGE | 50 70 45 45 250 | 40 60 45 45 180 | 50 50 50 50 50 | 0 10 0 10 0.02" 0.02" 550' | 40 40 45 45 200 | 40 40 100 63 22 | 250 250 630 400 | 500 500 100 100 50 | 40 40 10 10 100 | 1.00 1.00 0.70 0.70 9.00 | 1,000 1,000 500 500 100 | 50 50 150' | | | | | | B F178 BF257 BF258 BF259 BF337 | NPN AMPUSWITCH NPN HIGH VOLTAGE NPN HIGH VOLTAGE NPN HIGH VOLTAGE NPN HIGH VOLTAGE | 185 160 250 300 250 | 115 160 250 300 200 | 50 50 50 50 50 | 0 01 50 50 50 | 185 100 200 250 200 | 20 25 25 25 20 | | 30 30 30 30 30 | 20 10 10 10 10 | 1 00 1 00 1 00 | 30 30 30 | 120' 90' 90' 90' | | | | | | BFR36 BFS89 BFS95 BFT28C BFW16A | NPN AMPUSWITCH NPN HIGH VOLTAGE PNPAMPUSWITCH PNP HIGH VOLTAGE NPN AMPUSWITCH | 40 300 40 300 40 | 30 300 35 250 25 | 30 50 60 30 | 0 15 0 05 0 05 5 00 20 | 20 250 30 150 20 | 60 25 15 20 25 | | 70 50 1,000 10 50 | 50 10 10 10 50 | 020 5 00 | 150 30 | 1 0 25 1 2+ | | | | 40+ 60 | | BFW44 BFX34 BFX84 BFX85 | PNPAMPUSWITCH NPN AMPUSWITCH NPN AMPUSWITCH NPN AMPUSWITCH | 150 120 100 100 | 150 60 60 60 | 60 60 60 60 | 0 01 10** 0 50 0 50 | 100 60 100 100 | 40 40 30 70 | 150 | 10 2,000 150 150 | 10 20 10 10 | 0.50 1.00 1.00 1.00 | 10 5,000 500 500 | 60 70 50 50 | 7 0 100 12 12 | 600 | 1 200 | | | | | | | | | | | | | | | | | | | |
TPS2205IDBG4 on stock| INPUTS | DATA l/0+ | FUNCTION | | OEAB | OEBA | CPAB | CPBA | SAB | SBA | Ao to A7 | Bo to B7 | | L L | H H | H or L 1 | H orL | X X | X X | input | input | isolation store A and B data | | X H | H H | 1 | H orL | X L | X X | input input | un* output | store A, hold B, store A in both registers | | L L | X L | H or L | 1 1- | X X | X L | un* output | input input | hold A, store B, store B in both registers | | L L | L L | X X | X H orL | X X | L H | output | input | real-time B data to A bus stored B data to A bus | | H H | H H | X H or L | X X | L H | X X | input | output | real-time A data to B bus stored A data to B bus | | H | L | H or L | H orL | H | H | output | output | stored A data to B bus and stored B data to A bus | | | | | | | | | |
| ltem | Symbol | Rating | Unit | | | Power dissipation | PD | 75 | mW | | | J Forward current | IF | 50 | mA | | Input | Reverse voltage | VR | 5 | V | | t Jbse forward current+1 | I | 1 | A | | | ]pCollector power dissipation | Pc | 75 | mW | | | ]pCollector current | I c | 20 | mA | | OutPUt | ]pCollector-Emitter voltage | VCEO | 30 | V | | i-]pEmitter-Collector voltage | VECO | 5 | V | | Operating temp. 82 | FOPr | -20+85 | | | Storage temp. 42 | Tstg | -30+85 | | | Soldering temp.*3 | Tsol | 260 | | | | | | |
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