SN54LS21
SN54LS21 is DUAL 4-INPUT AND GATE manufactured by Motorola Semiconductor.
SN54/74LS21 DUAL 4-INPUT AND GATE
DUAL 4-INPUT AND GATE
VCC 14 13 12 11 10 9 8
LOW POWER SCHOTTKY
7 GND
14 1
J SUFFIX CERAMIC CASE 632-08
14 1
N SUFFIX PLASTIC CASE 646-06
14 1
D SUFFIX SOIC CASE 751A-02
ORDERING INFORMATION
SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC
GUARANTEED OPERATING RANGES
Symbol VCC TA IOH IOL Supply Voltage Operating Ambient Temperature Range Output Current
- High Output Current
- Low Parameter 54 74 54 74 54, 74 54 74 Min 4.5 4.75
- 55 0 Typ 5.0 5.0 25 25 Max 5.5 5.25 125 70
- 0.4 4.0 8.0 Unit V °C m A m A
FAST AND LS TTL DATA 5-59
SN54/74LS21
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage 54 Input LOW Voltage 74 Input Clamp Diode Voltage 54 Output HIGH Voltage 74 54, 74 VOL Output LOW Voltage 74 Input HIGH Current 0.1 Input LOW Current Short Circuit Current (Note 1) Power Supply Current Total, Output HIGH Total, Output LOW
- 20
- 0.4
- 100 2.4 4.4 0.35 0.5 20 IIH IIL IOS ICC V µA m A m A m A 2.7 3.5 0.25 0.4 V V 2.5
- 0.65 3.5 0.8
- 1.5 V V Min 2.0 0.7 V Typ Max Unit V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN, IIN =
- 18 m A VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table IOL = 4.0 m A IOL = 8.0 m A VCC = VCC MIN, VIN = VIL or VIH per Truth Table
VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 0.4 V VCC = MAX VCC = MAX m A
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25°C)
Limits Symbol t PLH t PHL Parameter Turn-Off Delay, Input to Output Turn-On Delay, Input to Output Min Typ 8.0 10 Max 15 20 Unit ns ns Test Conditions VCC = 5.0 V CL = 15 p F
FAST AND LS TTL DATA...