Octal 3-State Noninverting Transparent Latch - System Logic Semiconductor
Description
SL74HC373
Octal 3-State Noninverting Transparent Latch
High-Performance Silicon-Gate CMOS
The SL74HC373 is identical in pinout to the LS/ALS373.
The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs.
These latches appear transparent to data (i.
e.
, the outputs change asynchronously) when Latch Enable is high.
When Latch Enable goes low, data meeting the setup and hold time becomes latched.
The Output Enable input does not affect the state of the latches, but when Output Enable is high, all device outputs are forced to the high-impedance state.
Thus, data may be latched even when the outputs are not enabled.
• 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
ORDERING INFORMATION SL74HC373N Plastic SL74HC373D SOIC TA = -55° to 125° C for all packages
PIN ASSIGNMENT LOGIC DIAGRAM
FUNCTION TABLE
Inputs PIN 20=VCC PIN 10 = GND Output Enable L L L H Latch Enable H H L X D H L X X Output Q H L No Change Z
X = Don’t Care Z = High Impedance
SLS
System Logic Semiconductor
SL74HC373
MAXIMUM RATINGS *
Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL
*
Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package)
Value -0.
5 to +7.
0 -1.
5 to VCC +1.
5 -0.
5 to VCC +0.
5 ±20 ±35 ±75 750 500 -65 to +150 260
Unit V V V mA mA mA mW °C °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 12...
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