LS7272E-S

LS7272E LS7272E-F LS7273E LS7272E-20 LS7273E-20 30 VOLT QUAD-CHANNEL DIFFERENTIAL LINE DRIVER January 2020 PIN ASSIGNMENT – TOP VIEW A 1 16 VDD AO 2 15 D AO 3 14 DO LS7272E More feature-rich and cost-effective than the OL7272 and ET7273 Pin to pin replaceable with the OL7272 and functionally equivalent to the ET7273 Push-Pull or Open-Drain output drivers (LS7272E) Open-Drain output drivers only (LS7273E) Voltage Range: 4.5V – 30V (VDD – VSS) 120mA Sink/Source output drive Operating frequency up to 2 MHz Thermal shutdown protection for output driver overload Enable input with Thermal Shutdown disconnect feature Outputs RS422A compatible Inputs CMOS/TTL compatible with hysteresis Output drivers fully connected or high-impedance state PART NUMBER ORDERING INFORMATION: This part is available in three package styles, DIP, SOIC, and TSSOP. For DIP packages: LS7273E, LS7272E-20, LS7272E, LS7272E-F, LS7273E-20 For SOIC packages: LS7272E-S, LS7272E-F-S, LS7273E-S, LS7272E-S20, LS7273E-S20 For TSSOP packages: LS7272E-TS, LS7272E-F-TS, LS7273E-TS, LS7272ETS20, LS7273ETS20 LSI LSI FEATURES: • • • • • • • • • • • • OPD 4 BO 5 6 11 CO B 7 10 CO VSS 8 FIGURE 1 The thermal shutdown block located in the center of the IC can be disabled by setting the ENA input, Pin 12, to a voltage between 7.5V and 12V. Upon power-up, a Power-On-Reset (POR) circuit block forces all output drivers to the highimpedance state until the power supply voltage reaches a nominal 3.8V. Included in the POR circuit block is a hysteresis of 100mV such that if the power supply drops below 3.7V all output drivers are forced to the high-impedance state until the voltage rises above 3.8V. There is a built-in 5μs delay for disabling the output drivers should the power supply drop below 3.7V. The output drivers are immediately enabled when the voltage rises above 3.8V. 7272E-012120-1 16 VDD AO 2 15 D AO 3 14 DO n/c 4 BO 5 LS7272E-F An internal 5V regulated supply is used to power the logic and level converter blocks. A 1 LSI For the LS7273, pin4 is LOW and is tied to ground. The outputs are open drain and the loads can be returned to any voltage between 4.5V and 30V independent of VDD. 9 C FIGURE 1 The LS7272E/LS7273E are short-circuit proof Quad Differential Industrial Power Line Drivers. They can operate up to 30V and have a selectable thermal shutdown feature. Pin4 is a no-connect in LS7272E-F. LS7272E-F has the outputs always in push-pull mode. 12 ENA BO DESCRIPTION: The Data inputs are TTL / CMOS compatible and can also be driven up to the supply voltage VDD. The ENA input can be used to place all the outputs in a high impedance state. For the LS7272E the OPD input is used to connect the outputs as push-pull drivers or open-drain drivers, where the outputs can be returned through external loads to a maximum voltage of VDD. 13 DO 13 DO 12 ENA BO 6 11 CO B 7 10 CO VSS 8 9 C FIGURE 1A 16 VDD 20 VDD VSS 2 19 D A 1 LSI 1 LSI A LSI A 1 20 VDD VSS 2 19 D 18 n.c. AO 3 18 n.c. AO 3 14 DO AO 4 17 DO AO 4 17 DO 13 DO n.c. 5 16 DO n.c. 5 16 DO 12 ENA BO 6 15 ENA BO 6 BO 6 11 CO BO 7 14 CO BO 7 14 CO B 7 10 CO n.c. 8 13 CO n.c. 8 13 CO LOW 4 BO 5 VSS 8 9 C B 12 VSS 9 n.c. 10 FIGURE 2 11 C FIGURE 3 B LS7273E-20 AO 3 LS7272E-20 15 D LS7273E AO 2 15 ENA 12 VSS 9 n.c. 10 11 C FIGURE 4 NOTE: LS7272E-20 does not have OPD pin. INPUT / OUTPUT DESCRIPTION: A/B/ C/D These are CMOS / TTL data inputs that can also operate with input levels up to the VDD power supply. All data input blocks contain hysteresis. AO / BO / CO / DO / AO / BO / CO / DO These outputs can be selected to be push-pull or open-drain using the OPD input pin (LS7272E only). When in push-pull mode, outputs switch between VDD and VSS (Ground). ENA A logic low on this CMOS / TTL compatible input enables the output drivers while logic high forces them into a high-impedance state. This input is also used to enable / disable the output short circuit thermal protection. Applying a voltage between 7.5V and 12.5V to the ENA input will disable the thermal shutdown protection function. When using this feature, the Line Driver Outputs are enabled but no longer protected. OPD (LS7272E only) A logic low on this connects the outputs as open-drain drivers. If this input is left floating, the outputs are connected as push-pull drivers. LOW (LS7273E only) This pin must be tied low. 7272E-012120-2 VSS VDD A B C D ENA n/c (LS7272E-F) 5V REGULATOR CMOS / TTL INPUT LEVEL CONVERTER DIFFERENTIAL OUTPUT BUFFER CMOS / TTL INPUT LEVEL CONVERTER DIFFERENTIAL OUTPUT BUFFER CMOS / TTL INPUT LEVEL CONVERTER DIFFERENTIAL OUTPUT BUFFER CMOS / TTL INPUT LEVEL CONVERTER DIFFERENTIAL OUTPUT BUFFER LOGIC CONTROLLER TRISTATE OUTPUTS PUSH-PULL OR OPEN DRAIN OUTPUTS (LS7272E) THERMAL SHUT DOWN THERMAL SHUT DOWN DISABLE UNDER VOLTAGE SHUT DOWN POWER ON RESET OPD (LS7272E) (LS7273E) LOW Should be tied Low. 7272-012120-3 FIGURE 4 LS7272E / LS7272E-F / LS7273E BLOCK DIAGRAM AO AO BO BO CO CO DO DO ABSOLUTE MAXIMUM RATINGS Parameter Symbol Value Unit DC Supply Voltage VDD 36 V Data Output Voltage VOUT VDD + 0.3 V Data Output Voltage VOUT 4.5 to 36 V Drive Output Current per output IOUT 120 Data Input Voltage VIND VDD + 0.3 V ENA Input Voltage VINE 18 V OPD Input Voltage VINO 5 V LOW Input Voltage VINL 5 V Operating Temperature TA -55 to +125 °C Storage Temperature TSTG -65 to +150 °C Applicable only to LS7273. mA average Applicable only to LS7272E. Applicable only to LS7273E. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Value Unit DC Supply Voltage VDD 4.5 to 30 V Data Input Voltage VIND 0 to VDD V ENA Input Voltage VINE 0 to 5.5 V Data Output Voltage VOUT 0 to VDD V Data Output Voltage VOUT 4.5 to 30 V (LS7273E) Data Output Current per output IOUT 100 Operating Temperature TOP -40 to +125 °C OPD VINO 0 to float V (LS7272E) LOW VINL 0 V (LS7273E) 7272E-012120-4 mA See load characteristics ELECTRICAL CHARACTERISTICS (VDD = 12V, TA = 25°C, unless otherwise specified) Parameter Symbol Min Typ Max Unit Conditions Data Input High-Threshold VDH - 1.7 2.4 V ENA ≤ 0.8V Data Input Low Threshold VDL 0.8 1.2 - V ENA ≤ 0.8V Data Input Hysteresis VDHY - 0.5 - V ENA ≤ 0.8V ENA / OPD Input High-Threshold VEH - 1.7 2.4 V - ENA / OPD Input Low-Threshold VEL 0.8 1.2 - V - ENA / OPD Input Hysteresis VEHY - 0.5 - V - Leakage Current ILKG -5 +5 μA ENA IESO - OPD, LOW IDSI -30 VOH VDD – 0.4 VOH VDD – 0.6 Inputs: Inputs: μA ENA = 12V μA OPD , LOW= 0V V ILOAD = 20mA, VDD = 4.75V - V ILOAD = 30mA, VDD = 30V 100 - Outputs: High-Level Output Voltage (LS7272E only) Output Resistance RDSON - 20 - Ω ILOAD = 30mA Low Voltage Output Voltage VOL - 0.3 - V ILOAD = -20mA, VDD = 4.75V VOL - 0.4 - V ILOAD = -30mA, VDD = 30V IDD 6 - 15 mA IOT -10 +10 μA VDD = 20V, 2.4V < ENA < 7.5V Power-On-Reset (POR) VPOR - V - POR Hysteresis VPORH POR Removal Time TPORR Quiescent Current High-Impedance Output Leakage Current (Outputs Disabled) Reset: - 3.6 0.1 - V - 5 - μS - 165 185 °C Over-Temperature Protection: Junction Temperature Operate Point TJTO Junction Temperature Release Point TJTR 100 ENA Input (Over Temp Protection Inhibit) VEPI 7.0 °C 135 12.5 V NOTE 1: When the thermal shutdown is inhibited, the driver might be destroyed if it is not operated within its normal operating conditions. NOTE 2: Add 0.1uF to OPD input when the device is used in push-pull mode. 7272E-012120-5 AC SWITCHING CHARACTERISTICS (VDD = 12V, TA = 25°C, Load Capacitance = 1000 pF) Parameter Propagation delay from 50% point of input rising edge to zero crossing of differential outputs Symbol Min Typ Max Unit Conditions TPLH - 105 150 ns VDD = 5V (LS7272E only) - 112 200 ns VDD = 12V (LS7272E only) - 135 250 ns VDD = 24V (LS7272E only) - 105 150 ns VDD = 5V - 112 280 ns VDD = 12V - 135 330 ns VDD = 24V - 64 125 ns VDD = 5V (LS7272E only) - 75 150 ns VDD = 12V (LS7272E only) - 98 175 ns VDD = 24V (LS7272E only) - 65 125 ns VDD = 5V - 73 175 ns VDD = 12V - 101 250 ns VDD = 24V TPHL Propagation delay from 50% point of input rising edge to zero crossing of differential outputs Output Rise Time Output Fall Time TR TF ENA Enable Time TON - 60 200 ns - ENA Disable Time TOFF - 80 200 ns - The information included herein is believed to be accurate and reliable. However, LSI Computer Systems, Inc. assumes no responsibilities for inaccuracies, or for any infringements of patent rights of others which may result from its use. 7272E-012120-6 E *NOTE: Add series resistors (Rs) in case of abnormal situation where any of the LS7272E’s outputs are subject to voltages when either power pins are not connected. See table below. VDD ≤ 10V 10V ≤ VDD ≤ 15V 15V ≤ VDD ≤ 30V 7272E-012120-7 Rs ≥ 10Ω ≥ 25Ω ≥ 50Ω