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| 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 RI1 2 RO1 3 RI2 4 RO2 5 RI3 6 RO3 7 GND 8 (Top View) 16 VCC 15 DO1 14 DI1 13 DO2 12 DI2 11 DO3 10 DI3 9 DE2 Function Table Driver Input DI L X X H DE1 X L X H DE2 X X L H Output DO L L L H Receiver Input RI L H H : High level L : Low level X : Immaterial Output RO H L HD29468 Absolute Maximum Ratings Item Supply Voltage Driver Input Voltage Driver Output Voltage Receiver Input Voltage Power Dissipation (Ta = 25 C) Operating Temperature Storage Temperature *1 HD29468 Symbol VCC VID VOD VIR DP FP Ta Tstg Ratings +7 -0.5 to +7 -0.5 to +7 -0.5 to +7 1000 785 0 to +75 -65 to +150 Unit V V V V mW C C Notes: 1. The above data were taken by the VBE method,mounting on a glass epoxy board (40 x 40 x 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 Supply Voltage Operating Temperature Symbol VCC Ta Min 4.75 0 Typ 5.00 Max 5.25 75 Unit V C 2 HD29468 Electrical Characteristics Driver (VCC = 5.0 V 5 %, Ta = 0 to +75C) Item High Level Input Voltage Low Level Input Voltage Input Clamp Voltage High Level Output Voltage Symbol Conditions VIH VIL VIK VOH VCC = 4.75 V, IIN = -18 mA VCC = 4.75 V, VIH = 2.0 V IOH = -59.3 mA (Ta = 25 C) VCC = 5.25 V, VIH = 2.0 V IOH = -78.1 mA Low Level Output Voltage VOL DI IIH DE Low Level Input Current DI IIL DE High Level Output Current Short Circuit Output Current IOH VCC=4.75 V, VIL = 0 V, VOH = 5.0 V VCC = 4.75 V, VIH = 4.5 V, VOH = 5.0 V IOS VCC = 5.25 V, VIH = 4.5 V VCC = 5.25 V, VIL = 0.4 V VCC = 5.25 V, VIL = 0.8 V IOL = -0.24 mA, VIH = 4.5 V VCC = 5.25 V, VIH = 2.7 V 3.11 Min 2.0 HD29468 Max Unit V 0.8 -1.5 V V V 4.1 0.15 20 60 -400 -1200 100 100 -30 V A A A mA High Level Input Current Receiver (Ta = 0 to +75 C) Item High Level Output Threshold Voltage Low Level Output Threshold Voltage High Level Output Voltage Symbol Conditions VOTH VCC = 4.75 V, VIL = 1.15 V IOH = -400 A VCC = 5.25 V, VIH = 1.55 V IOL = 8 mA VCC = 4.75 V, VIN : Open IOH = -400 A VCC = 4.75 V VIH = 1.55 V Input Resistance High Level Input Current Low Level Input Current Short Circuit Output Current RIN IIH IIL IOS VCC = 0 V VCC = 4.75 V, VIH = 3.11 V VCC = 5.25 V, VIL = 0.15 V VCC = 5.25 V, VIL = 0 V 0.04 -20 IOL = 8 mA IOL = 4 mA 7.4 2.7 Min 2.7 Max Unit V VOTL 0.5 V VOH V Low Level Output Voltage VOL 0.5 0.4 20 0.42 -0.24 -100 V k mA mA mA 3 HD29468 Driver / Receiver (Ta = 0 to +75 C) Item Supply Voltage Symbol ICCH ICCL Conditions VCC = 5.25 V, VIH = 4.5 V VCC = 5.25 V, VIL = 0 V Min HD29468 Max 37 55 Unit mA Switching Characteristics Driver (VCC = 5.0 V, Ta = 25C) Item Rise Propagation Delay Time Fall Propagation Delay Time Propagation Delay Time Difference *1 Symbol tPLH Conditions RL = 47.5 Min 6.5 Max 18.5 Unit ns tPHL tPD 6.5 18.5 ns 10 ns Note: 1. tPD= tPLH - tPHL Receiver (VCC = 5.0 V, Ta = 25C) Item Rise Propagation Delay Time Fall Propagation Delay Time Propagation Delay Time Difference *1 Symbol tPLH Conditions RL = 2 k, CL = 15pF Min 7.5 Max 19.5 Unit ns tPHL tPD 7.5 19.5 ns 10 ns Note: 1. tPD= tPLH - tPHL 4 HD29468 Driver Test Circuit Input VCC = +5.0 V HD29468 Output Pulse Generator ZOUT = 50 50 RL = 4.75 Waveforms tr tf 90 % 1.3 V Input 10 % tPLH 90 % 1.3 V 10 % tPHL 3V 0V VOH 1.4 V Output 1.4 V VOL Notes: 1. tr = 15 ns, tf = 6 ns 2. Input waveforms : PRR = 1 MH Z, duty cycle 50 % 5 HD29468 Driver Test Circuit Input VCC Output HD29468 VCC = +5.0 V RL = 2 kW Pulse Generator ZOUT = 50 50 CL = 15 pF 1S2074 H Note: 1. CL includes probe and jig capacitance. Waveforms tr tf 90 % 1.4 V 10 % tPHL 90 % 1.4 V 10 % tPLH 3V Input Output 0V VOH 1.3 V 1.3 V VOL Notes: 1. tr = tf = 10 ns 2. Input waveforms : PRR = 1 MH Z, duty cycle 50 % 6 HD29468 Driver VIN - VOUT 5 Output Voltage V OUT (V) 4 Output Voltage V OUT (V) Ta = 25C RL = 47.5 VCC = 5.25 V VCC = 5.0 VCC = 4.75 5 VCC = 5.25 V VCC = 5.0 V 4 VCC = 4.75 V 3 HD29468 Receiver VIN - VOUT Ta = 25C 3 2 2 1 0 1 0 0.5 1.0 1.5 2.0 2.5 0.5 1.0 1.5 2.0 2.5 Input Voltage VIN (V) Input Voltage V IN (V) Driver IOUT - VOUT 5 Output Voltage V OUT (V) 4 Ta = 25C VCC = 5.0 V Output Voltage V OUT (V) 4 3 5 Receiver IOUT - VOUT Ta = 25C VCC = 5.0 V 3 2 1 0 -50 -100 -150 -200 -250 Output Current IOUT (mA) 2 1 0 -20 -40 -60 -80 -100 Output Current I OUT (mA) 7 |
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