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74AHC125 Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. 74AHC125
Description  Quad buffer/line driver; 3-state
Download  16 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74AHC125 Datasheet(HTML) 2 Page - NXP Semiconductors

 
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1999 Sep 27
2
Philips Semiconductors
Product specification
Quad buffer/line driver; 3-state
74AHC125; 74AHCT125
FEATURES
• ESD protection:
HBM EIA/JESD22-A114-A
exceeds 2000 V
MM EIA/JESD22-A115-A
exceeds 200 V
CDM EIA/JESD22-C101
exceeds 1000 V
• Balanced propagation delays
• All inputs have Schmitt-trigger
actions
• Inputs accepts voltages higher than
VCC
• For AHC only:
operates with CMOS input levels
• For AHCT only:
operates with TTL input levels
• Specified from
−40 to +85 and +125 °C.
DESCRIPTION
The 74AHC/AHCT125 are
high-speed Si-gate CMOS devices
and are pin compatible with low
power Schottky TTL (LSTTL). They
are specified in compliance with
JEDEC standard No. 7A.
The 74AHC/AHCT125 are four
non-inverting buffer/line drivers with
3-state outputs. The 3-state outputs
(nY) are controlled by the output
enable input (nOE). A HIGH at n
causes the outputs to assume a
HIGH-impedance OFF-state.
The ‘125’ is identical to the ‘126’ but
has active LOW enable inputs.
QUICK REFERENCE DATA
GND = 0 V; Tamb =25 °C; tr =tf ≤ 3.0 ns.
Notes
1. CPD is used to determine the dynamic power dissipation (PD in µW).
PD =CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
∑ (CL × VCC2 × fo) = sum of outputs;
CL = output load capacitance in pF;
VCC = supply voltage in Volts.
2. The condition is VI = GND to VCC.
FUNCTION TABLE
See note 1.
Note
1. H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
AHC
AHCT
tPHL/tPLH
propagation delay
nA to nY
CL = 15 pF;
VCC =5V
3.0
3.0
ns
CI
input capacitance
VI =VCC or GND
3.0
3.0
pF
CO
output capacitance
4.0
4.0
pF
CPD
power dissipation
capacitance
CL = 50 pF;
f = 1 MHz;
notes 1 and 2
10
12
pF
INPUT
OUTPUT
nOE
nA
nY
LLL
LH
H
HX
Z


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