August 1986
Revised March 2000
DM74LS367A
Hex 3-STATE Buffer/Bus Driver
General Description
This device contains six independent gates each of which performs a non-inverting buffer function. The outputs have the 3-STATE feature. When enabled, the outputs exhibit the low impedance characteristics of a standard LS output with additional drive capability to permit the driving of bus lines without external resistors. When disabled, both the output transistors are turned OFF presenting a high-imped- ance state to the bus line. Thus the output will act neither as a significant load nor as a driver. To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the disable time is shorter than the enable time of the outputs.
Ordering Code:
Order Number |
Package Number |
Package Description |
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DM74LS367AM |
M16A |
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow |
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DM74LS367AN |
N16E |
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide |
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Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram |
Function Table |
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Y = A |
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Inputs |
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Output |
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A |
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G |
Y |
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L |
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L |
L |
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H |
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L |
H |
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X |
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H |
Hi-Z |
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H = HIGH Logic Level
L = LOW Logic Level
X = Either LOW or HIGH Logic Level
Hi-Z = 3-STATE (Outputs are disabled)
Driver Buffer/Bus STATE-3 Hex DM74LS367A
© 2000 Fairchild Semiconductor Corporation |
DS006429 |
www.fairchildsemi.com |
DM74LS367A
Absolute Maximum Ratings(Note 1)
Supply Voltage |
7V |
Note 1: The “Absolute Maximum Ratings” are those values beyond which |
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the safety of the device cannot be guaranteed. The device should not be |
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Input Voltage |
7V |
operated at these limits. The parametric values defined in the Electrical |
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Characteristics tables are not guaranteed at the absolute maximum ratings. |
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Operating Free Air Temperature Range |
0°C to +70°C |
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The “Recommended Operating Conditions” table will define the conditions |
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Storage Temperature Range |
−65°C to +150°C |
for actual device operation. |
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Recommended Operating Conditions
Symbol |
Parameter |
Min |
Nom |
Max |
Units |
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VCC |
Supply Voltage |
4.75 |
5 |
5.25 |
V |
VIH |
HIGH Level Input Voltage |
2 |
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V |
VIL |
LOW Level Input Voltage |
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0.8 |
V |
IOH |
HIGH Level Output Current |
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−2.6 |
mA |
IOL |
LOW Level Output Current |
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24 |
mA |
TA |
Free Air Operating Temperature |
0 |
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70 |
°C |
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol |
Parameter |
Conditions |
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Min |
Typ |
Max |
Units |
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(Note 2) |
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VI |
Input Clamp Voltage |
VCC = Min, II = −18 mA |
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−1.5 |
V |
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VOH |
HIGH Level |
VCC = Min, IOH = Max |
2.4 |
3.4 |
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V |
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Output Voltage |
VIL = Max, VIH = Min |
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VOL |
LOW Level |
VCC = Min, IOL = Max |
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0.35 |
0.5 |
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Output Voltage |
VIL = Max, VIH = Min |
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V |
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IOL = 12 mA, VCC = Min |
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0.25 |
0.4 |
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II |
Input Current @ Max Input Voltage |
VCC = Max, VI = 7V |
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0.1 |
mA |
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IIH |
HIGH Level Input Current |
VCC = Max, VI = 2.7V |
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20 |
μA |
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IIL |
LOW Level |
VCC = Max, VI = 0.5V (Note 5) |
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A Input |
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−20 |
μA |
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Input Current |
VCC = Max, VI = 0.4V (Note 6) |
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A Input |
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−0.4 |
mA |
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VCC = Max, VI = 0.4V |
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−0.4 |
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G Input |
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IOZH |
Off-State Output Current with |
VCC = Max, VO = 2.4V |
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20 |
μA |
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HIGH Level Output Voltage Applied |
VIH = Min, VIL = Max |
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IOZL |
Off-State Output Current with |
VCC = Max, VO = 0.4V |
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−20 |
μA |
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LOW Level Output Voltage Applied |
VIH = Min, VIL = Max |
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IOS |
Short Circuit Output Current |
VCC = Max (Note 3) |
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−20 |
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−100 |
mA |
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ICC |
Supply Current |
VCC = Max (Note 4) |
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14 |
24 |
mA |
Note 2: All typicals are at VCC = 5V, TA = 25°C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 4: ICC is measured with the DATA inputs grounded and the OUTPUT CONTROLS at 4.5V.
Note 5: Both G inputs are at 2V.
Note 6: Both G inputs at 0.4V.
Switching Characteristics
at VCC = 5V and TA = 25°C
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RL = 667Ω |
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Symbol |
Parameter |
CL = 50 pF |
CL = 150 pF |
Units |
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Min |
Max |
Min |
Max |
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tPLH |
Propagation Delay Time LOW-to-HIGH Level Output |
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16 |
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25 |
ns |
tPHL |
Propagation Delay Time HIGH-to-LOW Level Output |
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16 |
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25 |
ns |
tPZH |
Output Enable Time to HIGH Level Output |
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30 |
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40 |
ns |
tPZL |
Output Enable Time to LOW Level Output |
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30 |
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40 |
ns |
tPHZ |
Output Disable Time from HIGH Level Output (Note 7) |
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20 |
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ns |
tPLZ |
Output Disable Time from LOW Level Output (Note 7) |
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20 |
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ns |
Note 7: CL = 5 pF.
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