HD29051 Dual Differential Line Drivers / ReceiversWith 3 State Outputs The HD29051 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 1 16 VCC R1A 2 15 D1A R1Y 3 14 D1Y D1 4 Enable 13 D1Z R2Y 5 12 D2 Enable Features R2A 6 11 D2Z Driver R2B 7 10 D2Y GND 8 9 • Built in current restriction when short circuit • Power up / down protection. • High output current IOH = –40 mA IOL = 40 mA D2A (Top View) Function Table Receiver • Input hysteresis (Typ. 50 mV) • In phase input voltage ±200 mV of input sensitivity in the range –7 to +12 V. Drivers Input A Enable Output Y Output Z L H L H H H H L X L Z Z Receivers Differential Input A – B Output Y VID ≥ 0.2 V H –0.2 V < VID < 0.2 V ? VID ≤ –0.2 V L H L Z X ? : : : : : High level Low level High impedance Immaterial Irrelevant HD29051 HD29051 Absolute Maximum Ratings Item *1 Supply Voltage Input Voltage A , B *3 *2 *3 Differential Input Voltage *3 Output Current Enable Input Voltage *4 Input Voltage *4 *5 Output Applied Voltage Symbol Ratings Unit VCC 7 V VIN ±25 V VID IO ±25 50 V mA VIE 5.5 V VIN 5.5 V V VO –1.0 to 7.0 Operating Temperature Range Topr 0 to 70 °C Storage Temperature Range Tstg –65 to 150 °C 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 Symbol Min Typ Max Unit Supply Voltage VCC 4.75 5.0 5.25 V VIC –7.0 12 V VID –6.0 6.0 V VIE 0 VIN Topr 0 5.25 5.25 V V 70 °C In Phase Input Voltage Differential Input Voltage *1 Enable Input Voltage Input Voltage *2 Operating Temperature Notes: 1. Only receiver 2. Only driver 2 *1 0 25 HD29051 HD29051 Electrical Characteristics (Ta = 0 to +70°C) Driver Symbol Item Input Voltage VIHD Min Typ Max 2.0 Unit Conditions V VILD 0.8 V Input Clamp Voltage VIKD –1.5 V VCC = 4.75 V II = –18 mA Output Voltage VOHD 2.5 V VCC = 4.75 V IOH = –20 mA 2.4 V VCC = 4.75 V IOH = –40 mA 0.45 V VCC = 4.75 V IOL = 20 mA 0.5 V VCC = 4.75 V IOL = 40 mA –100 100 µA VCC = 5.25 V, VO = 0.5 V Enable = 0.8 V –100 100 µA VCC = 5.25 V, VO = 2.7 V Enable = 0.8 V –100 µA VCC = 0 V VO = –0.25 V 100 µA VCC = 0 V VO = 6.0 V IID 100 µA VCC = 5.25 V VI = 5.25 V IIHD 20 µA VCC = 5.25 V VI = 2.7 V IIHD –360 µA VCC = 5.25 V VI = 0.4 V ∆ VOC 0.4 V VOLD Output Leak Current IOZD IO(Off) Input Current Differential Output Voltage VOD2 Short Circuit Output Current *1 IOSD V 2.0 ∆ VOD –30 0.4 V –150 mA VCC = 5.25 V VO = 0 V 3 HD29051 HD29051 Electrical Characteristics (Ta = 0 to +70°C) Receiver Symbol Item Differential Input Threshold Voltage *2 Min Typ VTHR Max Unit Conditions 0.2 V VO ≥ 2.7 V –7.0 V < VIC < 12 V V VO ≤ 0.45 V –7.0 V < VIC < 12 V 1.0 mA VIN = 12 V 0 V ≤ VCC ≤ 5.25 V –0.8 mA VIN = –7 V 0 V ≤ VCC ≤ 5.25 V V VCC = 4.75 V, IO = –400 µA VID = 0.4 V, –7.0 V < VIC < 12 V 0.45 V VCC = 4.75 V, IO = 8.0 mA VID = –0.4 V, –7.0 V < VIC < 12 V –85 mA VCC = 5.25 V, VO = 0 V VID = 3.0 V Max Unit Conditions 80 mA VCC = 5.25 V –0.2 IIBR Input Current VOHR Output Voltage 2.7 VOLR Short Circuit Output Current *1 IOSR –15 Supply Item Supply Current Symbol ICC Min Typ 55 *3 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 VCC = 5V, Ta = 25°C. 4 HD29051 HD29051 Switching Characteristics (Ta = 25°C, VCC = 5 V) Driver Item Propagation Delay Time Symbol Min Typ Max Unit Conditions tPLHD 20 ns CL = 30 pF, RL = 75 Ω to GND RL = 180 Ω to VCC tPHLD 20 ns CL = 30 pF, RL = 75 Ω to GND RL = 180 Ω to VCC 4 ns CL = 30 pF, RL = 75 Ω to GND RL = 180 Ω to VCC *1 Propagation Delay Time Difference tSKD Output Enable Time tZHD 20 ns CL = 30 pF RL = 75 Ω to GND tZLD 35 ns CL = 30 pF RL = 180 Ω to VCC tHZD 20 ns CL = 10 pF RL = 75 Ω to GND tLZD 25 ns CL = 10 pF RL = 180Ω to VCC Max Unit Conditions Output Disable Time Receiver Item Symbol Min Propagation Delay Time tPLHR 40 ns CL = 15 pF tPHLR 40 ns CL = 15 pF Typ Note: 1. tSKD = tPLHD – tPHLD 5 HD29051 HD29051 DC Test ( VOD2 , ∆ VOD , VOC, ∆ VOC ) VOD2 , ∆ VOD Test Output Y 50 Ω VOD2 50 Ω Output Z VOC, ∆ VOC Test Y 50 Ω R 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 50 Ω VOC HD29051 HD29051 1. tPLHD , tPHLD Waveforms Test circuit Enable 3V 3V Input A 5V Output Input A tPLHD RL = 180 Ω Y Pulse Generator Z tPHLD 0V VOH Output Y RL = 75 Ω CL = 30 pF *1 1.3 V 1.3 V 1.3 V 1.3 V tPLHD VOL tPHLD *2 Output Z VOH 1.3 V 1.3 V VOL tSKD tSKD 2. tZHD , tZLD , tHZD , tLZD Waveforms Test circuit Input 3V Pulse Generator 5V RL = 180 Ω Output *1 A 1.3 V 1.3 V 0V tZHD tHZD Enable 3 V or GND Input Enable Y Z CL = 30pF or 10 pF *2 *3 RL = 75 Ω VOH 0.5 V 1.3 V Output tZLD tLZD VOL VOH 1.3 V 0.5 V VOL 7 HD29051 HD29051 3. tPLHR , tPHLR Waveforms Test circuit Enable 3V Input A Input Pulse Generator *1 A B 1.5 V 1.5 V 0V Output CL = 15 pF *2 tPLHR tPHLR VOH Output Y 1.3 V Notes: 1. The pulse generator has the following characteristics: PRR = 1 MHZ, 50 % duty cycle, tr = tf = 6.0 ns. 2. CL includes probe and jig capacitance. 3. 75 Ω connected between the pin and GND at tZHD tHZD test. 180 Ω connected between the pin and GND at tZHD 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 S2 is open. 8 1.5 V 1.3 V VOL HD29051 HD29051 Main Characteristics • Output Characteristics (High level) [Driver] • Output Characteristics (Low level) [Driver] 5 1.0 Ta = 25°C VCC = 5.25 V 4 VCC = 5.00 V Output Voltage (VOL) [V] Output Voltage (VOH) [V] Ta = 25°C VCC = 5.00 V 3 2 VCC = 4.75 V 1 0 0.8 VCC = 4.75 V 0.6 0.4 0.2 VCC = 5.25 V 0 0 –40 –80 –120 –160 –200 0 Output Current (IOH) [mA] 1.0 80 100 Ta = 25°C VCC = 5.25 V VCC = 5.00 V VCC = 5.00 V Output Voltage (VOL) [V] Output Voltage (VOH) [V] 60 • Output Characteristics (Low level) [Receiver] Ta = 25°C 4 40 Output Current (IOL) [mA] • Output Characteristics (High level) [Receiver] 5 20 3 2 1 0.8 VCC = 4.75 V 0.6 0.4 0.2 VCC = 5.25 V VCC = 4.75 V 0 0 0 –20 –40 –60 –80 Output Current (IOH) [mA] –100 0 10 20 30 40 50 Output Current (IOL) [mA] 9 HD29051 HD29051 • Input / Output Characteristics [Receiver] 5 VCC = 5 V Output Voltage (VOUT) [V] Ta = 25°C 4 VID = 0 V 3 VT– VT+ 2 1 0 –200 –100 0 100 Input Voltage (VIA) [mV] 10 200