Dual 4-bit multiplexer
INTEGRATED CIRCUITS
74F253 Dual 4-bit input multiplexer (3-State)
Product specification IC15 Data Handbook 1988 Nov 29
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Description
INTEGRATED CIRCUITS
74F253 Dual 4-bit input multiplexer (3-State)
Product specification IC15 Data Handbook 1988 Nov 29
Philips Semiconductors
Philips Semiconductors
Product specification
Dual 4-input multiplexer (3-State)
74F253
FEATURES
3-State outputs for bus interface and multiplex expansion Common select inputs Separate Output Enable Inputs
DESCRIPTION
The 74F253 has two identical 4-input multiplexers with 3-State outputs which select two bits from four sources selected by common Select inputs (S0, S1). When the individual Output Enable (OEa, OEb) inputs of the 4-input multiplexers are High, the outputs are forced to a high impedance (Hi-Z) state. The 74F253 is the logic implementation of a 2-pole, 4-position switch; the position of the switch being determined by the logic levels supplied to the two common Select inputs. To avoid exceeding the maximum current ratings when the outputs of the 3-State devices are tied together, all but one device must be in the high-impedance state. Therefore, only one Output Enable must be active at a time.
PIN CONFIGURATION
OEa S1 I3a I2a I1a I0a Ya GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC OEb S0 I3b I2b I1b I0b Yb
SF00798
TYPE 74F253
TYPICAL PROPAGATION DELAY 7.0ns
TYPICAL SUPPLY CURRENT (TOTAL) 12mA
ORDERING INFORMATION
COMMERCIAL RANGE DESCRIPTION 16-pin plastic DIP 16-pin plastic SO VCC = 5V ±10%, Tamb = 0°C to +70°C N74F253N N74F253D PKG DWG # SOT38-4 SOT109-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS ...
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