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74AHC125 Datasheet

Quad buffer/line driver; 3-state

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INTEGRATED CIRCUITS
DATA SHEET
74AHC125; 74AHCT125
Quad buffer/line driver; 3-state
Product specification
Supersedes data of 1999 Jan 11
File under Integrated Circuits, IC06
1999 Sep 27


NXP Semiconductors Electronic Components Datasheet

74AHC125 Datasheet

Quad buffer/line driver; 3-state

No Preview Available !

Philips Semiconductors
Quad buffer/line driver; 3-state
Product specification
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.
SYMBOL PARAMETER
CONDITIONS
TYPICAL
UNIT
AHC AHCT
tPHL/tPLH propagation delay CL = 15 pF;
nA to nY
VCC = 5 V
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 CL = 50 pF; 10 12 pF
capacitance
f = 1 MHz;
notes 1 and 2
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.
INPUT
nOE
L
L
H
nA
L
H
X
Note
1. H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
OUTPUT
nY
L
H
Z
1999 Sep 27
2


Part Number 74AHC125
Description Quad buffer/line driver; 3-state
Maker NXP
Total Page 16 Pages
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