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| HD29050 Dual Differential Line Drivers / ReceiversWith 3 State Outputs The HD29050 features differential line drivers / receivers with three state output designed to meet the spec of EIA RS - 422A and 423A. Each device has two drivers / receivers in a 16 pin package. The device becomes in enable state when active high for a driver and active low for a receiver. Pin Arrangement R1B R1A R1Y 1 2 3 16 VCC 15 D1A 14 D1Y 13 D1Z 12 D Enable 11 D2Z 10 D2Y 9 (Top View) D2A R 4 Enable R2Y 5 6 7 8 Features Driver * Built in current restriction when short circuit * Power up / down protection. * High output current I OH = -40 mA IOL = 40 mA Receiver * Input hysteresis (Typ. 50 mV) * In phase input voltage 200 mV of input sensitivity in the range -7 to +12 V. R2A R2B GND Function Table Drivers Input A L H X Enable H H L Output Y L H Z Receivers Differential Input A - B VID 0.2 V -0.2 V < VID < 0.2 V VID -0.2 V X H L Z X ? : : : : : High level Low level High impedance Immaterial Irrelevant Enable L L L H Output Y H ? L Z Output Z H L Z HD29050 Absolute Maximum Ratings Item Supply Voltage *1 *3 *2 *3 HD29050 Symbol VCC VIN VID IO VIE VIN *4 *5 Ratings 7 25 25 50 5.5 5.5 -1.0 to 7.0 0 to 70 -65 to 150 Unit V V V mA V V V C C Input Voltage A , B Output Current Input Voltage *3 Differential Input Voltage Enable Input Voltage *4 Output Applied Voltage VO Topr Tstg Operating Temperature Range Storage Temperature Range Notes: 1. All voltage values except for differential input voltage are with respect to network ground terminal. 2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input. 3. Only receiver 4. Only driver 5. Z state 6. The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time. Recommended Operating Conditions Item Supply Voltage In Phase Input Voltage Differential Input Voltage Enable Input Voltage Input Voltage *2 *1 *1 Symbol VCC VIC VID VIE VIN Topr Min 4.75 -7.0 -6.0 0 0 0 Typ 5.0 Max 5.25 12 6.0 5.25 5.25 Unit V V V V V C Operating Temperature Notes: 1. Only receiver 2. Only driver 25 70 2 HD29050 Electrical Characteristics (Ta = 0 to +70C) Driver Item Input Voltage Symbol VIHD VILD Input Clamp Voltage VIKD 2.5 Min 2.0 0.8 -1.5 Typ Max Unit V V V VCC = 4.75 V II = -18 mA VCC = 4.75 V IOH = -20 mA VCC = 4.75 V IOH = -40 mA VCC = 4.75 V IOL = 20 mA VCC = 4.75 V IOL = 40 mA Conditions HD29050 Output Voltage VOHD V 2.4 V VOLD 0.45 V 0.5 V A A A A A A A V V Output Leak Current IOZD -100 100 VCC = 5.25 V, VO = 0.5 V Enable = 0.8 V VCC = 5.25 V, VO = 2.7 V Enable = 0.8 V VCC = 0 V VO = -0.25 V VCC = 0 V VO = 6.0 V VCC = 5.25 V VI = 5.25 V VCC = 5.25 V VI = 2.7 V VCC = 5.25 V VI = 0.4 V -100 100 IO(Off) -100 100 Input Current IID 100 IIHD 20 IIHD VOC VOD2 VOD Short Circuit Output Current *1 -360 0.4 2.0 0.4 -30 -150 Differential Output Voltage V mA VCC = 5.25 V VO = 0 V IOSD 3 HD29050 Electrical Characteristics (Ta = 0 to +70C) Receiver Item Differential Input Threshold Voltage *2 HD29050 Symbol VTHR Min Typ Max 0.2 Unit Conditions V VO 2.7 V -7.0 V < VIC < 12 V VO 0.45 V -7.0 V < VIC < 12 V VIN = 12 V 0 V VCC 5.25 V -0.2 IIBR V Input Current 1.0 -0.8 mA mA VIN = -7 V 0 V VCC 5.25 V V VCC = 4.75 V, IO = -400 A VID = 0.4 V, -7.0 V < V ICM < 12 V VCC = 4.75 V, IO = 8.0 mA VID = -0.4 V, -7.0 V < V ICM < 2 V VCC = 5.25 V, VO = 0.4 V VID = 3.0 V, Enable = 2.0 V VCC = 5.25 V, VO = 2.4 V VID = -3.0 V, Enable = 2.0 V VCC = 5.25 V, VO = 0 V VID = 3.0 V Output Voltage VOHR 2.7 VOLR 0.45 V Output Leak Current IOZR -100 100 A A mA -100 *1 100 Short Circuit Output Current Input Voltage IOSR VIHE VILE -15 2.0 -85 V 0.8 -100 20 100 -1.5 V A A A V VCC = 5.25 V, VIL = 0.4 V VCC = 5.25 V, VIH = 2.7 V VCC = 5.25 V, VIH = 5.25 V VCC = 4.75 II = -18 mA Input Current IILE IIHE IIE Input Clamp Voltage VIKE Supply Item Supply Current Symbol ICC Min Typ 55 *3 Max 80 Unit mA Conditions VCC = 5.25 V Notes: 1. Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second. 2. In this table, only the threshold voltage is expressed in algebra. 3. All typical values are at V CC = 5 V, Ta = 25C. 4 HD29050 Switching Characteristics (Ta = 25C, VCC = 5 V) Driver Item Propagation Delay Time Symbol tPLHD Min Typ Max 20 Unit ns ns Conditions HD29050 CL = 30 pF, RL = 75 to GND RL = 180 to VCC CL = 30 pF, RL = 75 to GND RL = 180 to VCC CL = 30 pF, RL = 75 to GND RL = 180 to VCC CL = 30 pF RL = 75 to GND CL = 30 pF RL = 180 to VCC CL = 10 pF RL = 75 to GND CL = 10 pF tPHLD *1 20 4 Propagation Delay Time Difference Output Enable Time tSKD ns tZHD tZLD 20 ns 35 20 ns Output Disable Time tHZD ns tLZD 25 ns Receiver Item Propagation Delay Time Symbol tPLHR Min Typ Max 40 Unit ns ns Conditions CL = 15 pF tPHLR 40 20 CL = 15 pF Output Enable Time tZHR ns CL = 15 pF RL = 5 K to GND CL = 15 pF RL = 2 K to VCC CL = 15 pF, RL = 5 K to GND RL = 2 K to VCC tZLR tHZR 25 ns Output Disable Time 30 ns tLZR 30 ns Note: 1. tSKD = tPLHD - tPHLD 5 HD29050 DC Test ( VOD2 , VOD , VOC, VOC ) VOD2 , VOD Test HD29050 Output Y VOD2 50 Output Z 50 VOC, VOC Test Y 50 R 50 VOC Z VOD and VOC indicate the differences of voltage from the former states when Y and Z outputs are inversed. VOD = VOD2 - VOD2 VOC = VOC - VOC 6 HD29050 1. tPLHD , tPHLD HD29050 Test circuit Enable 3V 5V Input Pulse Generator *1 Waveforms 3V Output Y A Z CL = 30pF *2 Input A 1.3 V tPLHD 1.3 V tPHLD 1.3 V tPLHD VOL VOH 0V VOH RL = 180 RL = 75 Output Y Output Z 1.3 V tPHLD 1.3 V tSKD 1.3 V VOL tSKD 2. tZHD , tZLD , tHZD , tLZD Test circuit Input Pulse Generator Enable *1 Waveforms 3V 5V Output RL = 180 *3 Input Enable 1.3 V 1.3 V 0V VOH 0.5 V tZHD tHZD Y Z CL = 30pF or 10pF *2 3 V or GND A 1.3 V Output tZLD tLZD VOL VOH 1.3 V 0.5 V VOL RL = 75 7 HD29050 3. tPLHR , tPHLR Test circuit Enable Input Pulse Generator *1 HD29050 Waveforms 3V Input A Output CL = 15pF *2 1.5 V 1.5 V 0V A B 1.5 V tPLHR Output Y tPHLR VOH 1.3 V 1.3 V VOL 4. tZHR , tZLR , tHZR , tLZR Test circuit Input Pulse Generator Enable *1 Waveforms 5V Input Enable *4 3V 1.5 V 1.5 V 0V VOH 0.5 V 1.5 V Output Y All diodes are 1S2074 H tZLR tLZR VOL VOH 1.5 V 0.5 V VOL S1 Output tZHR tHZR Va +1.5 or -1.5 V A B CL = 15pF *2 RL = 2 K RL = 5 K S2 *4 Notes: 1. The pulse generator has the following characteristics: PRR = 1 MH Z, 50 % duty cycle, t r = tf = 6.0 ns. 2. CL includes probe and jig capacitance. 3. 75 connected between the pin and GND at t ZHD tHZD test. 180 connected between the pin and GND at t ZHD tHZD test. 4. At tHZR, tLZR test, S1 and S2 are closed. At tZHR test, S1 is open and S2 is closed. At tZLR test, S1 is closed and S 2 is open. 8 HD29050 Main Characteristics * Output Characteristics (High level) [Driver] 5 Ta = 25C 4 Output Voltage (V OH) [V] VCC = 5.25 V Output Voltage (V OL) [V] VCC = 5.00 V 3 0.8 VCC = 4.75 V 0.6 1.0 HD29050 * Output Characteristics (Low level) [Driver] Ta = 25C VCC = 5.00 V 2 VCC = 4.75 V 1 0.4 0.2 VCC = 5.25 V 0 0 -40 -80 -120 -160 -200 0 0 20 40 60 80 100 Output Current (I OH) [mA] Output Current (IOL) [mA] * Output Characteristics (High level) [Receiver] 5 Ta = 25C VCC = 5.25 V 4 Output Voltage (V OH) [V] Output Voltage (V OL) [V] VCC = 5.00 V 0.8 1.0 * Output Characteristics (Low level) [Receiver] Ta = 25C VCC = 5.00 V VCC = 4.75 V 0.6 3 2 0.4 1 VCC = 4.75 V 0 0 -20 -40 -60 -80 -100 0.2 VCC = 5.25 V 0 0 10 20 30 40 50 Output Current (IOL) [mA] Output Current (IOH) [mA] 9 HD29050 HD29050 * Input / Output Characteristics [Receiver] 5 VCC = 5 V Ta = 25C 4 Output Voltage (V OUT) [V] VID = 0 V 3 VT- 2 VT+ 1 0 -200 -100 0 100 200 Input Voltage (VU) [mV] 10 |
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