Philips Semiconductors Product specification
74F723A/74F723–1/
74F725A/74F725–1
Multiplexers
74F723A Quad 3-to-1 Data Selector Multiplexer (3-State)
74F723-1 Quad 3-to-1 Data Selector Multiplexer with 30 Equivalent Output Termination Impedance (3-State)
74F725A Quad 4-to-1 Data Selector Multiplexer
74F725-1 Quad 4-to-1 Data Selector Multiplexer with 30
Equivalent Output Termination Impedance
2
1990 Dec 13 853-1369 01257
FEATURES for 74F723A/74F723-1
•Consists of four 3-to-1 Multiplexers
•High impedance PNP base inputs for reduced loading
(20µA in High and Low states)
•Inverting or non-inverting data path capability by an inverting (INV)
input
•Designed for address multiplexing of dynamic RAM and other
applications
•Multiple side pins for V
CC
and GND to reduce lead inductance
(improves speed and noise immunity)
•3-State outputs sink 64mA (74F723A only)
•30 termination impedance on each output – 74F723-1
FEATURES for 74F725A/74F725-1
•Consists of four 4-to-1 Multiplexers
•High impedance PNP base inputs for reduced loading
(20µA in High and Low states)
•Equivalent to two 74F253s without 3-State
•Outputs sink 64mA (74F725A only)
•30 termination impedance on each output – 74F725-1
DESCRIPTION
The 74F723A/74F723-1 consist of four 3-to-1 multiplexers designed
for address multiplexing of dynamic RAMs and other multiplexing
applications. Select (S0, S1) inputs control which line is to be
selected, as defined in the Function Table for 74F723A/74F723-1.
When the invering input (INV
) is Low, the input data path is inverted.
To improve speed and noise immunity, VCC and GND side pins are
used. The 3-State outputs source 15mA and sink 64mA. The
74F723-1 is the same as 74F723A except that it has a 30
temination impedance on each output to reduce line noise and the
3-State outputs sink 5mA.
The 74F725A/74F725-1 consist of four 4-to1 multiplexers designed
for general multiplexing purpose. The select (S0, S1) inputs control
which line is to be selected, as defined in the Function Table for
74F725A/725-1. The outputs source 15mA and sink 64mA. The
74F725-1 is the same as the 74F725A except that it has a 30
termination impedance on each output to reduce line noise and the
outputs sink 5mA.
TYPE
TYPICAL
PROPAGATION DELAY
TYPICAL SUPPL Y
CURRENT
(TOT AL)
74F723A 5.5ns 25mA
74F723-1 7.0ns 26mA
74F725A 5.5ns 20mA
74F725-1 6.5ns 20mA
ORDERING INFORMATION
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ± 10%
T
amb
= 0° C to +70°C
PKG DWG
#
20-Pin Plastic Slim N74F723AN, N74F723-1N,
DIP (300 mil)
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
TYPE PINS DESCRIPTION
74F(U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
Dna, Dnb, Dnc Data inputs 1.0/0.066 20µA/40µA
74F723A/
S0, S1 Select inputs 1.0/0.033 20µA/20µA
74F723-1
OE Output Enable input 1.0/0.033 20µA/20µA
INV Output inverting input 1.0/0.033 20µA/20µA
74F723A Q0 - Q3 Data outputs for 74F723A 750/106.7 15mA/64mA
74F723-1 Q0 - Q3 Data outputs for 74F723-1 750/8.33 15mA/5mA
74F725A/
Dna, Dnb, Dnc, Dnd Data inputs 1.0/0.066 20µA/40µA
74F725-1
S0, S1 Select inputs 1.0/0.033 20µA/20µA
74F725A Q0 - Q3 Data outputs 750/106.7 15mA/64mA
74F725-1 Q0 - Q3 Data outputs 750/8.33 15mA/5mA
NOTE: One (1.0) FAST Unit Load (U.L.) is defined as: 20µA in the High state and 0.6mA in the Low state.