N74F158AD ,Data selectors/multiplexersPIN CONFIGURATIONS, 74F157A ..
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N74F164D ,74F164; 8-bit serial-in parallel-out shift registerPIN CONFIGURATION• Gated serial data inputsDsa 1 14 VCC• Typical shift frequency of 100MHzDsb 2 13 ..
N74F164N ,74F164; 8-bit serial-in parallel-out shift registerINTEGRATED CIRCUITS74F1648-bit serial-in parallel-out shift registerProduct specification 2000 Dec ..
N74F164N ,74F164; 8-bit serial-in parallel-out shift register
NFC15-48S05 , Single and dual output 15 Watt Wide input DC/DC converters
NFC20-24S05 , Single and dual output 20 Watt Wide input DC/DC converters
NFC20-48S05 , Single and dual output 20 Watt Wide input DC/DC converters
NFC20-48S05 , Single and dual output 20 Watt Wide input DC/DC converters
NFC20-48S05 , Single and dual output 20 Watt Wide input DC/DC converters
NFC40-48S05-M , Single and triple output 40 Watt Wide input DC/DC converters
74F157-N74F157AD-N74F157AN-N74F158AD
Data selectors/multiplexers
Product specification 1996 Mar 12
IC15 Data Handbook
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers74F157A: Quad 2-input data selector/multiplexer, non-inverting
74F158A: Quad 2-input data selector/multiplexer, inverting
DESCRIPTIONThe 74F157A is a high speed Quad 2-Input Multiplexer which
selects 4 bits of data from one of two sources under the control of a
common Select input (S). The Enable input (E) is active when Low.
When E is High, all of the outputs (Yn) are forced Low regardless of
all other input conditions.
Moving data from two registers to a common output bus is a
common use of the 74F157A. The state of the Select input
determines the particular register from which the data comes.
The device is the logic implementation of a 4-pole, 2-position switch
where the position of the switch is determined by the logic levels
supplied to the Select input.
The 74F158A is similar, but has inverting outputs (Yn). Industrial temperature range (–10°C to +85°C) available for
74F157A
ORDERING INFORMATION
INPUT AND OUTPUT LOADING AND FAN OUT TABLE
NOTE: One (1.0) FAST unit load is defined as: 20μA in the High state and 0.6mA in the Low state.
PIN CONFIGURATIONS, 74F157A 74F158A
LOGIC SYMBOLS, 74F157A 74F158A
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
IEEE/IEC SYMBOLS, 74F157A 74F158A
LOGIC DIAGRAM, 74F157A
FUNCTION TABLE, 74F157AH = High voltage level
L = Low voltage level
74F158A
74F158AH = High voltage level
L = Low voltage level
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
ABSOLUTE MAXIMUM RATINGS(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
RECOMMENDED OPERATING CONDITIONS
DC ELECTRICAL CHARACTERISTICS(Over recommended operating free-air temperature range unless otherwise noted.)
NOTES: For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. All typical values are at VCC = 5V, Tamb = 25°C. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
of a High output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, IOS tests should be performed last. ICC is measured with 4.5V applied to all inputs and all outputs open.
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
AC ELECTRICAL CHARACTERISTICS FOR 74F157A AND 74F158A
AC WAVEFORMSFor all waveforms, VM = 1.5V
Waveform 1. Propagation Delay for Data and Select to Output
Waveform 2. Propagation Delay for Data and Select to Output
Waveform 3. Propagation Delay for Enable to Output
Waveform 4. Propagation Delay for Enable to Output
Philips Semiconductors Product specification
74F157A, 74F158AData selectors/multiplexers
TEST CIRCUIT AND WAVEFORMS
