搜档网
当前位置:搜档网 › IN74HC623A中文资料

IN74HC623A中文资料

TECHNICAL DATA

IN74HC623A

Octal 3-State Noninverting Bus Transceiver

High-Performance Silicon-Gate CMOS

The IN74HC623A is identical in pinout to the LS/ALS623. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.

The IN74HC623A is a 3-state noninverting transceiver that is used for 2-way communication between data buses. Two separate enables are available. The enable for bus A to B is active-high, the enable for bus B to A is active-low.

? Outputs Directly Interface to CMOS, NMOS, and TTL ? Operating Voltage Range: 2.0 to 6.0 V ? Low Input Current: 1.0 μA

? High Noise Immunity Characteristic of CMOS Devices

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 20=V CC PIN 10 = GND

FUNCTION TABLE

Control Inputs

Output Enable

Direction Operation

L L Data Transmitted

from Bus B to Bus A L H Data Transmitted

from Bus A to Bus B H L Buses Isolated L H (High Impedance

State)

MAXIMUM RATINGS*

Symbol Parameter Value

Unit V CC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V

V IN DC Input Voltage (Referenced to GND) -1.5 to V CC +1.5 V

V OUT DC Output Voltage (Referenced to GND) -0.5 to V CC +0.5 V

I IN DC Input Current, per Pin ±20 mA

I OUT DC Output Current, per Pin ±35 mA

I CC DC Supply Current, V CC and GND Pins ±75 mA

P D Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ 750

500

mW

Tstg Storage Temperature -65 to +150 °C

T L Lead Temperature, 1 mm from Case for 10 Seconds

(Plastic DIP or SOIC Package)

260 °C

*Maximum Ratings are those values beyond which damage to the device may occur.

Functional operation should be restricted to the Recommended Operating Conditions.

+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C

SOIC Package: : - 7 mW/°C from 65° to 125°C

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min

Max

Unit V CC DC Supply Voltage (Referenced to GND) 2.0 6.0 V V IN, V OUT DC Input Voltage, Output Voltage (Referenced to GND) 0 V CC V

T A Operating Temperature, All Package Types -55 +125 °C

t r, t f Input Rise and Fall Time (Figure 1) V CC =2.0 V

V CC =4.5 V

V CC =6.0 V 0

1000

500

400

ns

This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, V IN and V OUT should be constrained to the range GND≤(V IN or V OUT)≤V CC.

Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V CC). Unused outputs must be left open. I/O pins must be connected to a properly terminated line or bus.

DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)

V CC Guaranteed Limit

Symbol Parameter Test

Conditions V

25 °C

to

-55°C ≤85

°C

≤125

°C

Unit

V IH Minimum High-

Level Input Voltage V OUT=0.1 V or V CC-0.1 V

?I OUT?≤ 20 μA

2.0

4.5

6.0

1.5

3.15

4.2

1.5

3.15

4.2

1.5

3.15

4.2

V

V IL Maximum Low -

Level Input Voltage V OUT=0.1 V or V CC-0.1 V

?I OUT?≤ 20 μA

2.0

4.5

6.0

0.5

1.35

1.8

0.5

1.35

1.8

0.5

1.35

1.8

V

V OH Minimum High-

Level Output Voltage V IN=V IH or V IL

?I OUT?≤ 20 μA

2.0

4.5

6.0

1.9

4.4

5.9

1.9

4.4

5.9

1.9

4.4

5.9

V

V IN=V IH or V IL

?I OUT?≤ 6.0 mA

?I OUT?≤ 7.8 mA

4.5

6.0

3.98

5.48

3.84

5.34

3.7

5.2

V OL Maximum Low-

Level Output Voltage V IN= V IL or V IH

?I OUT?≤ 20 μA

2.0

4.5

6.0

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

V

V IN= V IL or V IH

?I OUT?≤ 6.0 mA

?I OUT?≤ 7.8 mA

4.5

6.0

0.26

0.26

0.33

0.33

0.4

0.4

I IN Maximum Input

Leakage Current V IN=V CC or GND, Pin 1 or

19

6.0±0.1±1.0 ±1.0 μA

I OZ Maximum Three-

State Leakage

Current Output in High-Impedance

State

V IN= V IL or V IH

V OUT=V CC or GND,

I/O Pins

6.0±0.5±5.0 ±10 μA

I CC Maximum Quiescent

Supply Current

(per Package) V IN=V CC or GND

I OUT=0μA

6.08.0 80 160 μA

AC ELECTRICAL CHARACTERISTICS (C L =50pF,Input t r =t f =6.0 ns)

V CC

Guaranteed Limit

Symbol Parameter V 25 °C to -55°C ≤85°C ≤125°C

Unit

t PLH , t PHL

Maximum Propagation Delay, A to B , B to A (Figures 1 and 3)

2.04.56.0100 20 17 125 25 21 150 30 26 ns

t PLZ , t PHZ Maximum Propagation Delay , Direction or Output Enable to A or B (Figures 2 and 4) 2.04.56.0150 30 26 190 38 33 225 45 38 ns

t PZL , t PZH Maximum Propagation Delay , Direction or Output Enable to A or B (Figures 2 and 4) 2.04.56.0150 30 26 190 38 33 225 45 38 ns

t TLH , t THL Maximum Output Transition Time, Any Output (Figures 1 and 3)

2.04.56.060 12 10 75 15 13 90 18 15 ns

C IN Maximum Input Capacitance (Pin 1 or Pin 19) -

10

10

10

pF

C Maximum Three-State I/O Capacitance (I/O in High-Impedance State)

- 15 15 15 pF

OUT

Power Dissipation Capacitance (Per Transceiver Channel)

Typical @25°C,V CC =5.0 V

C Used to determine the no-load dynamic power consumption:

P 40 pF

PD

D =C PD V CC 2f+I CC V CC

Figure 1. Switching Waveforms

Figure 2. Switching Waveforms

Figure 3. Test Circuit Figure 4. Test Circuit EXPANDED LOGIC DIAGRAM

相关主题