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Quadruple Differential Line Receiver With 3 State Outputs ADE-205-593 (Z) 1st. Edition Dec. 2000

Description

The HD75175 is a differential line receiver with three state outputs designed to meet the requirements of EIA standards RS-422A, RS-423A, RS-485 and several CCITT recommendations. The device features input sensitivity of ±200 mV over a common mode input voltage range of –12 V to +12 V. Each receiver features two active high enables, each common to two receivers. Function Table (Each Receiver) Differential Inputs A-B Enable Output VID ‡ 0.2 V H H –0.2 V < VID < 0.2 V H ? VID £ –0.2 V H L XL Z H : High Level L : Low Level X : Irrelevant ? : Indeterminate Z : high impedance

(Top view) GND 1, 2 Enable

16 VCC

3, 4 Enable Logic Diagram 1, 2 Enable 3, 4 Enable

Absolute Maximum Ratings (Ta = 25˚C) Item Symbol Rating Unit Supply Voltage V CC 7V Input Voltage, A or B Inputs V IN –25 V Differential Input Voltage*2 VID –25 V Enable Input Voltage V IE 7V Low Level Output Current I OL 50 mA Power Dissipation P T*1 DP 1150 mW FP 785 Operating Temperature Range Topr 0 to 70 °C Storage Temperature Range Tstg –65 to +150 °C Note: 1. The above date were taken by the DVBE method, mounting on a glass epoxy board (40 · 40 · 1.6 mm) of 10% wiring density. 2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input. 3. 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 V CC 4.75 5.00 5.25 V Common Mode Input Voltage V IC —— –12 V Differential Input Voltage V ID —— –12 V Output Current I OH — — –400 mA IOL ——1 6m A Operating Temperature Topr 0 — 70 °C

Item Symbol Min Typ* 1 Max Unit Conditions Differential Input High Threshold Voltage VTH — — 0.2 V V O = 2.7 V, IO = –0.4 mA Differential Input Low Threshold Voltage VTL –0.2 — — V V O = 0.5 V, IO = 16 mA Hysteresis*2 VT + – VT – —5 0—m V Enable Input Voltage V IH 2— — V VIL – – 0.8 Enable Input Clamp Voltage VIK — — –1.5 V II = –18 mA Output Voltage V OH 2.7 — — V V ID = 200 mV, IOH = –400 mA VOL — — 0.45 V V ID = –200 mV, IOL = 8 mA — — 0.5 I OL = 16 mA High Impedance State Output IOZ — — –20 mAV O = 0.4 V Current — — +20 V O = 2.4 V Line Input Current I I — — 1 mA Other input at 0 V* 4 VI = 12 V Enable Input Current I IH ——2 0 mAI IH = 2.7 V IIL — — –100 mAI IL = 0.4 V Input Resistance ri 12 — — k W Short Circuit Output Current*3 IOS –15 — —85 mA Supply Current I CC — — 70 mA Notes: 1. All typical values are at VCC = 5 V, Ta = 25°C. 2. Hysteresis is the difference between the positive going input threshold voltage VT + and the negative going input threshold voltage VT 3. Not more than one output should be shorted at a time. 4. Refer to EIA standards RS-422A and RS-485 for exact conditions. Switching Characteristics (VCC = 5 V, Ta = 25°C) Item Symbol Min Typ Max Unit Test Conditions Propagation Delay Time t PLH — 2 03 5n s C L = 15 pF tPHL —2 2 3 5 Output Enable Time t ZH —1 3 3 0 C L = 15 pF tZL —1 9 3 0 Output Disable Time t HZ —2 6 3 5 C L = 5 pF tLZ —2 5 3 5

Switching Time Test Method 1. tPLH , tPHL C L Output 2 V Ω50 1.5 V Pulse Generator See Note 1 See Note 2 tPLH OH VOL V 1.3 V Input 1.5 V 1.5 V 3 V 0 V tPHL

1.3 VOutput

  1. tZH , tHZ 1.5 V C L Output Ω2 k VCC Ω5 k Ω50 Pulse Generator See Note 1 See Note 2 See Note 3 tZH OHV 1.5 V Input 1.5 V 1.5 V 3 V 0 V tHZ

0.5 VOutput

S1 : Open 1.4 V S1 : Closed 0 V

  1. tZL , tLZ –1.5 V C L Output Ω2 k VCC Ω50 Ω5 k Pulse Generator See Note 1 See Note 2 See Note 3 tZL OH VOL V 1.5 V Input 1.5 V 1.5 V 3 V 0 V tLZ 0.5 V Output S2 : Open S2 : Closed 1.4 V Notes: 1. The pulse generator has the following characteristics: PRR = 1 MHz, 50% duty cycle, tr = tf = 6 ns, Zout = 50 W 2. C L includes probe and jig capacitance. 3. All diodes are 1S2074(H).

(reference value) DP-16 Conforms Conforms 1.07 g Unit: mm 6.30 19.20 16 9 1.3

20.00 Max

7.40 Max

7.62 0.25 + 0.13

0.51 Min

2.54 Min5.06 Max 0° – 15°

1.11 Max

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