HD29468 Triple Line Drivers / Receivers The HD29468 features line drivers and receivers for unbalanced transmissions, which meet the specs of IBM 360 and 370. This device has three drivers and receivers in one package. Input of driver and output of receiver are compatible with low power schottky TTL circuit and operates from a single 5 V power supply. The driver has two types of enable inputs. Sprius noise can be prevented by grounding either input when power supply is throw or cut off. The outputs are protected from short circuit and the wired logic is available due to emitter follower from for party line data bus applications. The device operates at high speed. Low to high level and high to low level propagation delay times defference are 10 ns max. Pin Arrangement DE1 1 16 VCC RI1 2 15 DO 1 RO1 3 14 DI1 RI2 4 13 DO 2 RO2 5 12 DI2 RI3 6 11 DO 3 RO3 7 10 DI3 GND 8 9 (Top View) Function Table Driver Receiver Input Output Input RI Output RO L L H X L H L X L L H H H DI DE1 DE2 DO L X X X L X H H : High level L : Low level X : Immaterial DE2 HD29468 HD29468 Absolute Maximum Ratings Item Symbol Ratings Unit Supply Voltage VCC +7 V Driver Input Voltage VID –0.5 to +7 Driver Output Voltage VOD –0.5 to +7 V V VIR –0.5 to +7 V DP 1000 mW FP 785 Operating Temperature Ta 0 to +75 °C Storage Temperature Tstg –65 to +150 °C Receiver Input Voltage Power Dissipation (Ta = 25 °C) *1 Notes: 1. The above data were taken by the ∆VBE method,mounting on a glass epoxy board (40 × 40 × 1.6 mm) of 10 % wiring density. 2. 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 Supply Voltage VCC 4.75 5.00 Operating Temperature 2 Ta 0 Max Unit 5.25 V 75 °C HD29468 HD29468 Electrical Characteristics Driver (VCC = 5.0 V ±5 %, Ta = 0 to +75°C) Min Symbol Conditions Item High Level Input Voltage VIH Low Level Input Voltage VIL Input Clamp Voltage VIK V CC = 4.75 V, I IN = –18 mA High Level Output Voltage VOH VCC = 4.75 V, V IH = 2.0 V IOH = –59.3 mA (Ta = 25 °C) 2.0 VOL Low Level Output Voltage DI IIH High Level Input Current V –1.5 V V VCC = 5.25 V, V IH = 2.0 V IOH = –78.1 mA 4.1 VCC = 5.25 V, V IL = 0.8 V IOL = –0.24 mA, V IH = 4.5 V 0.15 V V CC = 5.25 V, V IH = 2.7 V 20 µA V CC = 5.25 V, V IL = 0.4 V –400 DE Short Circuit Output Current V 60 DI IIL High Level Output Current Unit 0.8 3.11 DE Low Level Input Current Max µA –1200 IOH IOS µA VCC=4.75 V, V IL = 0 V, V OH = 5.0 V 100 V CC = 4.75 V, V IH = 4.5 V, V OH = 5.0 V 100 V CC = 5.25 V, V IH = 4.5 V –30 mA Max Unit Receiver (Ta = 0 to +75 °C) Item Symbol Conditions Min High Level Output Threshold Voltage VOTH 2.7 Low Level Output Threshold Voltage VOTL VCC = 5.25 V, V IH = 1.55 V IOL = 8 mA High Level Output Voltage VOH VCC = 4.75 V, V IN : Open IOH = –400 µA Low Level Output Voltage VOL VCC = 4.75 V IOL = 8 mA 0.5 VIH = 1.55 V IOL = 4 mA 0.4 VCC = 4.75 V, V IL = 1.15 V V IOH = –400 µA Input Resistance RIN VCC = 0 V High Level Input Current IIH VCC = 4.75 V, V IH = 3.11 V Low Level Input Current IIL VCC = 5.25 V, V IL = 0.15 V Short Circuit Output Current IOS VCC = 5.25 V, V IL = 0 V 0.5 V 2.7 7.4 V V 20 kΩ 0.42 mA 0.04 –0.24 mA –20 –100 mA 3 HD29468 HD29468 Driver / Receiver (Ta = 0 to +75 °C) Item Symbol Conditions Supply Voltage ICCH ICCL Min Max Unit VCC = 5.25 V, V IH = 4.5 V 37 mA VCC = 5.25 V, V IL = 0 V 55 Switching Characteristics Driver (V CC = 5.0 V, Ta = 25°C) Item Symbol Conditions Min Max Unit Rise Propagation Delay Time tPLH RL = 47.5 Ω 6.5 18.5 ns Fall Propagation Delay Time tPHL 6.5 18.5 ns 10 ns Propagation Delay Time Difference *1 ∆tPD Note: 1. ∆tPD= tPLH – tPHL Receiver (V CC = 5.0 V, Ta = 25°C) Symbol Item Rise Propagation Delay Time tPLH Fall Propagation Delay Time tPHL Propagation Delay Time Difference *1 Note: 1. ∆tPD= tPLH – tPHL 4 ∆tPD Conditions Min Max Unit RL = 2 kΩ, CL = 15pF 7.5 19.5 ns 7.5 19.5 ns 10 ns HD29468 HD29468 Driver Test Circuit Input Output VCC = +5.0 V Pulse Generator ZOUT = 50 Ω 50 Ω RL = 4.75 Ω Waveforms tr tf 90 % 1.3 V Input 3V 90 % 1.3 V 10 % 10 % tPHL tPLH 0V VOH 1.4 V Output 1.4 V VOL Notes: 1. t r = 15 ns, t f = 6 ns 2. Input waveforms : PRR = 1 MH Z, duty cycle 50 % 5 HD29468 HD29468 Driver Test Circuit Input VCC Output VCC = +5.0 V RL = 2 kW Pulse Generator ZOUT = 50 Ω 50 Ω CL = 15 pF 1S2074 H Note: 1. C L includes probe and jig capacitance. Waveforms tf tr 90 % 1.4 V Input 3V 90 % 1.4 V 10 % 10 % tPLH tPHL 0V VOH Output 1.3 V 1.3 V VOL Notes: 1. t r = tf = 10 ns 2. Input waveforms : PRR = 1 MH Z, duty cycle 50 % 6 HD29468 HD29468 Driver V IN – V OUT Receiver V IN – V OUT 4 3 5 Ta = 25°C RL = 47.5 Ω VCC = 5.25 V VCC = 5.0 VCC = 4.75 2 1 0 0.5 1.0 2.0 1.5 VCC = 5.25 V VCC = 5.0 V Output Voltage V OUT (V) Output Voltage V OUT (V) 5 VCC = 4.75 V 3 2 1 0 2.5 0.5 1.0 1.5 2.0 Input Voltage V IN (V) Input Voltage V IN (V) Driver I OUT – V OUT Receiver I OUT – VOUT 2.5 5 5 Ta = 25°C VCC = 5.0 V 4 Ta = 25°C VCC = 5.0 V Output Voltage V OUT (V) Output Voltage V OUT (V) Ta = 25°C 4 3 2 1 0 –50 –100 –150 –200 Output Current I OUT (mA) –250 4 3 2 1 0 –20 –40 –60 –80 –100 Output Current I OUT (mA) 7