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74LV251DB Arkusz danych(PDF) 2 Page - NXP Semiconductors

Numer części 74LV251DB
Szczegółowy opis  8-input multiplexer 3-State
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Producent  PHILIPS [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74LV251DB Arkusz danych(HTML) 2 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74LV251
8-input multiplexer (3-State)
2
1998 May 20
853–1967 19420
FEATURES
Optimized for low voltage applications: 1.0 to 3.6 V
Accepts TTL input levels between V
CC = 2.7 V and VCC = 3.6 V
Typical V
OLP (output ground bounce) < 0.8 V at VCC = 3.3 V,
Tamb = 25°C
Typical V
OHV (output VOH undershoot) > 2 V at VCC = 3.3 V,
Tamb = 25°C
True and complement outputs
Both outputs are 3-State for further multiplexer expansion
Multifunction capability
Permits multiplexing from n-lines to one line
Output capability: standard
I
CC category: MSI
DESCRIPTION
The 74LV251 is a low-voltage Si-gate CMOS device and is pin and
function compatible with 74HC/HCT251.
The 74LV251 is an 8-input multiplexer with 8 binary inputs (I0 to I7), an
output enable input (OE) and three select inputs (S0, S1, S2). One of
the eight binary inputs is selected by the select inputs and is routed to
the outputs (Y, Y). Both outputs are in the high impedance OFF-state
(Z) when the output enable input is HIGH, allowing multiplexer
expansion by tying the outputs.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25°C; tr = tf ≤ 2.5 ns
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
tPHL/tPLH
Propagation delay
In to Y
In to Y
Sn to Y
Sn to Y
CL = 15 pF;
VCC = 3.3 V
14
16
19
20
ns
CI
Input capacitance
3.5
pF
CPD
Power dissipation capacitance per gate
VCC = 3.3 V
VI = GND to VCC1
44
pF
NOTE:
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; CL = output load capacitance in pF;
fo = output frequency in MHz; VCC = supply voltage in V;
(CL × VCC2 × fo) = sum of the outputs.
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
OUTSIDE NORTH AMERICA
NORTH AMERICA
PKG. DWG. #
16-Pin Plastic DIL
–40
°C to +125°C
74LV251 N
74LV251 N
SOT38-4
16-Pin Plastic SO
–40
°C to +125°C
74LV251 D
74LV251 D
SOT109-1
16-Pin Plastic SSOP Type II
–40
°C to +125°C
74LV251 DB
74LV251 DB
SOT338-1
16-Pin Plastic TSSOP Type I
–40
°C to +125°C
74LV251 PW
74LV251PW DH
SOT403-1


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