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74ABT20 Datasheet(PDF) 3 Page - NXP Semiconductors

Part No. 74ABT20
Description  Dual 4-input NAND gate
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74ABT20 Datasheet(HTML) 3 Page - NXP Semiconductors

   
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Philips Semiconductors
Product specification
74ABT20
Dual 4-input NAND gate
1995 Sep 22
3
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω
SYMBOL
PARAMETER
WAVEFORM
LIMITS
UNIT
SYMBOL
PARAMETER
WAVEFORM
Tamb = +25°C
VCC = +5.0V
Tamb = –40°C to +85°C
VCC = +5.0V ±0.5V
UNIT
MIN
TYP
MAX
MIN
MAX
tPLH
tPHL
Propagation delay
An, Bn, Cn, Dn to Yn
1
1.0
1.0
2.7
2.2
3.9
3.4
1.0
1.0
4.6
3.8
ns
tOSHL
tOSLH1
Output to Output skew
An or Bn to Yn
2
0.3
0.5
0.5
ns
NOTE:
1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same
device. The specification applies to any outputs switching in the the same direction, either HIGH–to-LOW (tOSHL) or LOW-to-HIGH (tOSLH);
parameter guaranteed by design.
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
VM
VM
VM
VM
Yn
An, Bn,
Cn, Dn
tPHL
tPLH
SA00353
Waveform 1.
Propagation Delay for Inverting Outputs
OUTPUT N
same part
INPUT
SA00381
OUTPUT
tPLH
MIN
tPHL
MIN
tPLH
MAX
tPHL
MAX
tOSLH
tOSHL
Waveform 2. Common edge skew
TEST CIRCUIT AND WAVEFORMS
PULSE
GENERATOR
RT
VIN
D.U.T.
VOUT
CL
RL
VCC
Test Circuit for Outputs
VM
VM
tW
AMP (V)
NEGATIVE
PULSE
10%
10%
90%
90%
0V
VM
VM
tW
AMP (V)
POSITIVE
PULSE
90%
90%
10%
10%
0V
tTHL (tF)
tTLH (tR)tTHL (tF)
tTLH (tR)
VM = 1.5V
Input Pulse Definition
DEFINITIONS
RL = Load resistor; see AC CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
INPUT PULSE REQUIREMENTS
FAMILY
74ABT
SH00067
Amplitude
Rep. Rate
tW
tF
3.0V
1MHz
500ns
2.5ns
tR
2.5ns


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