DM7438N

DM7438N Datasheet

DM7438<br>• 7438 Quad 2-Input NAND Buffers with Open-Collector Outputs

Part	Datasheet
DM7438N	DM7438N (pdf)

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DM7438 • 7438 Quad 2-Input NAND Buffers with Open-Collector Outputs DM7438 • 7438 Quad 2-Input NAND Buffers with Open-Collector Outputs This device contains four independent gates each of which performs the logic NAND function. The open-collector outputs require external pull-up resistors for proper logical operation. Pull-Up Resistor Equations Where: N1 IOH = total maximum output high current for all outputs tied to pull-up resistor N2 IIH = total maximum input high current for all inputs tied to pull-up resistor N3 IIL = total maximum input low current for all inputs tied to pull-up resistor Ordering Code: Order Number Package Number Package Description DM7438M M14A 14-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow DM7438N N14A 14-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide 7438SJ M14D 14-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Y = AB Inputs H = HIGH Logic Level L = LOW Logic Level Output Y H L 2001 Fairchild Semiconductor Corporation DS006513 DM7438 • 7438 Absolute Maximum Ratings Note 1 Supply Voltage Input Voltage Output Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 5.5V 7V 0°C to +70°C −65°C to +150°C Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Recommended Operating Conditions VCC VIH VIL VOH IOL TA Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Current Free Air Operating Temperature Electrical Characteristics over recommended operating free air temperature range unless otherwise noted Parameter Conditions VI ICEX II IIH IIL ICCH ICCL Input Clamp Voltage HIGH Level Output Current LOW Level Output Voltage Input Current Max Input Voltage HIGH Level Input Current LOW Level Input Current Supply Current with Outputs HIGH Supply Current with Outputs LOW Switching Characteristics at VCC = 5V and TA = 25°C Parameter tPLH Propagation Delay Time LOW-to-HIGH Level Output tPHL Propagation Delay Time HIGH-to-LOW Level Output Note 2 All typicals are at VCC = 5V, TA = 25°C. VCC = Min, II = −12 mA VCC = Min, VO = 5.5V VIL = Max VCC = Min, IOL = Max VIH = Min VCC = Max, VI = 5.5V VCC = Max, VI = 2.4V VCC = Max, VI = 0.4V VCC = Max VCC = Max CL = 45 pF RL = Conditions Units Note 2 Units mA µA mA

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DM7438
• 7438 Quad 2-Input NAND Buffers with Open-Collector Outputs

DM7438
• 7438 Quad 2-Input NAND Buffers with Open-Collector Outputs

This device contains four independent gates each of which performs the logic NAND function. The open-collector outputs require external pull-up resistors for proper logical operation.

Pull-Up Resistor Equations

Where:

N1 IOH = total maximum output high current for all outputs tied to pull-up resistor

N2 IIH = total maximum input high current for all inputs tied to pull-up resistor

N3 IIL = total maximum input low current for all inputs tied to pull-up resistor
Ordering Code:

Order Number Package Number

Package Description

DM7438M

M14A
14-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow

DM7438N

N14A
14-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
7438SJ

M14D
14-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Function Table

Y = AB

Inputs

H = HIGH Logic Level L = LOW Logic Level

Output Y H L
2001 Fairchild Semiconductor Corporation DS006513

DM7438
• 7438

Absolute Maximum Ratings Note 1

Supply Voltage Input Voltage Output Voltage Operating Free Air Temperature Range Storage Temperature Range
7V 5.5V
7V 0°C to +70°C −65°C to +150°C

Note 1 The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.

Recommended Operating Conditions

VCC VIH VIL VOH IOL TA

Parameter Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Current Free Air Operating Temperature

Electrical Characteristics
over recommended operating free air temperature range unless otherwise noted

Parameter

Conditions

VI ICEX

II IIH IIL ICCH ICCL

Input Clamp Voltage HIGH Level Output Current LOW Level Output Voltage Input Current Max Input Voltage HIGH Level Input Current LOW Level Input Current Supply Current with Outputs HIGH Supply Current with Outputs LOW

Switching Characteristics
at VCC = 5V and TA = 25°C

Parameter
tPLH

Propagation Delay Time

LOW-to-HIGH Level Output
tPHL

Propagation Delay Time

HIGH-to-LOW Level Output

Note 2 All typicals are at VCC = 5V, TA = 25°C.

VCC = Min, II = −12 mA VCC = Min, VO = 5.5V VIL = Max VCC = Min, IOL = Max VIH = Min VCC = Max, VI = 5.5V VCC = Max, VI = 2.4V VCC = Max, VI = 0.4V VCC = Max VCC = Max

CL = 45 pF RL =

Conditions

Units

Note 2

Units
mA µA mA

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Datasheet ID: DM7438N 513623