7428 Buffer Quad Two-Input Buffer Product Specification

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7428 Buffer Quad Two-Input Buffer Product Specification

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Signetics
7428
Buffer
Quad Two-Input Buffer Product Specification
Logic Products
TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT (TOTAL)
7428 23mA
ORDERING CODE
PACKAGES COMMERCIAL RANGE
Plastic N7428N
NOTE:
information regarding devices processed Military Specifications, Signetics Military Products Data Manual.
FUNCTION TABLE
INPUTS
HIGH voltage level voltage level
OUTPUT
INPUT OUTPUT LOADING FAN-OUT TABLE
PINS DESCRIPTION
Inputs
Output 30ul
NOTE:
Where unit load (ul) understood 40mA -1.6mA ltL.
CONFIGURATION
LOGIC SYMBOL
LOGIC SYMBOL (IEEE/IEC)
-SO53B0S
December 1985
5-58
853-0552 81501
This Material Copyrighted Respective Manufacturer
Signetics Logic Products Product Specification
Buffer 7428
ABSOLUTE MAXIMUM RATINGS (Over operating free-air temperature range unless otherwise noted.)
PARAMETER UNIT
Supply voltage
Input voltage -0.5 +5.5
Input current
VOUT Voltage applied output HIGH output state -0.5
Operating free-air temperature range
RECOMMENDED OPERATING CONDITIONS
PARAMETER UNIT
Supply voltage 4.75 5.25
HIGH-level input voltage
LOW-level input voltage
Input clamp current
HIGH-level output current -2400
LOW-level output current
Operating free-air temperature
TEST CIRCUITS WAVEFORMS
Test Circuit Totem-Pole Outputs
DEFINITIONS
Load resistor VCc; CHARACTERISTICS value. Load capacitance includes probe capacitance;
CHARACTERISTICS value. Termination resistance should equal Zout
Pulse Generators. Diodes 1N916, 1N3064. equivalent. triH. tjHL Values should less than equal table entries.
1.3V 74LS; 1.5V other families.
Input Pulse Definition
FAMILY INPUT PULSE REQUIREMENTS
Amplitude Rep. Rate Pulse Width Itlh 'thl
500ns
74LS 3.0V 500ns 15ns
500ns 2.5ns 2.5ns
December 1985 5-59
This Material Copyrighted Respective Manufacturer
Signetics Logic Products
Product Specification
Buffer 7428
ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.)
PARAMETER TEST CONDITIONS1 7428 UNIT
Typ2
HIGH-level output voltage WIN, MAX,
LOW-level output voltage WIN, MIN,
Input clamp voltage MIN, -1.5
Input current maximum input voltage MAX, 5.5V
HIGH-level input current MAX, 2.4V
LOW-level input current MAX, 0.4V -1.6
Short-circuit output current3 -180
Supply current (total) Icch Outputs HIGH
Iccl Outputs
NOTES:
conditions shown MAX, appropriate value specified under recommended operating conditions applicable type.
typical values
tested with Vout +0.5V 0.5V. more than output should shorted time duration short circuit should exceed second.
WAVEFORM
VOJT
_tvm
1.3V 74LS; 1.5V other families.
Waveform Waveform Inverting Outputs
ELECTRICAL CHARACTERISTICS 5.0V
PARAMETER TEST CONDITIONS UNIT
Jplh Propagation delay tpHL Waveform 50pF
Propagation delay tpHL Waveform 150pF
December 1985 5-60
This Material Copyrighted Respective Manufacturer

7428 Buffer Quad Two-Input Buffer Product Specification

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