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Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
DESCRIPTION
The 74F537 is a one-of-ten decoder/demultiplexer with four active High BCD inputs and ten mutually exclusive outputs. A Polarity control (P) input determines whether the outputs are active Low or active High. The 74F537 has 3-State outputs and a High signal on the Output Enables (OE) input forces all outputs to the high impedance state. Two input Enables, active High (E1) and active Low (E0), are available for demultiplexing data to the selected output in either non-inverted or inverted form. Input codes greater than BCD nine causes all outputs to go to the inactive state (i.e., same polarity as the P input). TYPICAL SUPPLY CURRENT (TOTAL) 44mA
PIN CONFIGURATION
Q2 Q1 Q0 P OE A0 A1
1 2 3 4 5 6 7 8 9
20 VCC 19 Q3 18 Q4 17 A3 16 A2 15 E0 14 E1 13 Q9 12 Q8 11 Q7
TYPE 74F537
TYPICAL PROPAGATION DELAY 9ns
Q5 Q6
GND 10
SF01004
ORDERING INFORMATION
DESCRIPTION 20-Pin Plastic DIP 20-Pin Plastic SOL COMMERCIAL RANGE VCC = 5V 10%, Tamb = 0C to +70C N74F537N N74F537D
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS A0 - A3 E0 E1 P OE Q0 - Q9 Data inputs Enable input (active Low) Enable input (active High) Polarity control input Output Enable input Data outputs DESCRIPTION 74F(U.L.) HIGH/LOW 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 150/40 LOAD VALUE HIGH/LOW 20A/0.6mA 20A/0.6mA 20A/0.6mA 20A/0.6mA 20A/0.6mA 3.0mA/24mA
NOTE: One (1.0) FAST Unit Load is defined as: 20A in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
6 7 16 17
LOGIC SYMBOL (IEEE/IEC)
DMUX 4 A0 A1 A2 A3 5 N10 & EN 3 0,10 1,10 2,10 3,10 2 1 19 18 8 9 11 12 13
4 15 14 5
P E0 E1 OE 6 7 17 13 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 14 15 & 3 0 10G 0 9
4,10 5,10 6,10 7,10 8,10 9,10
VCC = Pin 20 GND = Pin 10
3
2
1
19
18
8
9
11
12
13
SF01005
SF01006
1989 Jan 20
1
853-0873 95586
Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
LOGIC DIAGRAM
A3 17
A2
16
A1
7
A0
6
E0 E1
15 14
P
4
OE VCC = GND = Pin 20 Pin 10
5 3 Q0 2 Q1 1 Q2 19 Q3 18 Q4 8 Q5 9 Q6 11 Q7 12 Q8 13 Q9
SF01007
FUNCTION TABLE
INPUTS OE H L L L L L L L L L L L L L L L L L L L L L L L L L L H L X Z = = = = E0 X H X L L L L L L L L L L L L L L L L L L L L L L L L E1 X X L H H H H H H H H H H H H H H H H H H H H H H H H A3 X X X L L L L L L L L H H H H L L L L L L L L H H H H A2 X X X L L L L H H H H L L X L L L L L H H H H L L X H A1 X X X L L H H L L H H L L H X L L H H L L H H L L H X A0 X X X L H L H L H L H L H X X L H L H L H L H L H X X H L L L L L L L L L L L L H H H H H H H H H H H L H L L L L L L L L L L H L H H H H H H H H H H L L H L L L L L L L L L H H L H H H H H H H H H Q0 Z Q1 Z Q2 Z Q3 Z OUTPUTS Q4 Z Q5 Z Q6 Z Q7 Z Q8 Z Q9 Z OPERATING MODE High Impedance Disable L L L L L L L H L L L L H H H H H H H L H H H H L L L L L L L L H L L L H H H H H H H H L H H H L L L L L L L L L H L L H H H H H H H H H L H H Ai L Active Low output (P = H) Active High A i Hi h output (P = L)
Outputs equal P input L L L H L L L L L L L L H H H L H H H H H H H H L L L L H L L L L L L L H H H H L H H H H H H H L L L L L H L L L L L L H H H H H L H H H H H H L L L L L L H L L L L L H H H H H H L H H H H H
High voltage level Low voltage level Don't care High impedance "off" state
1989 Jan 20
2
Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits 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.) SYMBOL VCC VIN IIN VOUT IOUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in High output state Current applied to output in Low output state Operating free-air temperature range Storage temperature PARAMETER RATING -0.5 to +7.0 -0.5 to +7.0 -30 to +5.0 -0.5 to +VCC 48 0 to +70 -65 to +150 UNIT V V mA V mA C C
RECOMMENDED OPERATING CONDITIONS
SYMBOL VCC VIH VIL IIK IOH IOL Tamb Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Operating free-air temperature range 0 PARAMETER LIMITS MIN 4.5 2.0 0.8 -18 -3.0 24 70 NOM 5.0 MAX 5.5 UNIT V V V mA mA mA C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL VO OH VOL VIK II IIH IIL IOZH IOZL IOS PARAMETER High-level High level output voltage TEST CONDITIONS1 VCC = MIN, VIL = MAX, VIH = MIN, IOH = MAX VCC = MIN, VIL = MAX, VIH = MIN, IOL = MAX VCC = MIN, II = IIK VCC = MAX, VI = 7.0V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.5V VCC = MAX, VO = 2.7V VCC = MAX, VO = 0.5V VCC = MAX -60 10%VCC 5%VCC 10%VCC 5%VCC LIMITS MIN 2.4 2.7 3.3 0.35 0.35 -0.73 0.50 0.50 -1.2 100 20 -0.6 50 -50 -150 TYP2 MAX UNIT V V V V V A A mA A A mA
Low-level output voltage Input clamp voltage Input current at maximum input voltage High-level input current Low-level input current Off-state current High-level voltage applied Off-state current Low-level voltage applied Short-circuit output current3
ICC Supply current (total) VCC = MAX 44 66 mA NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value under the recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25C. 3. 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 should be performed last.
1989 Jan 20
3
Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
AC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITIONS Tamb = +25C VCC = +5.0V CL = 50pF, RL = 500 MIN tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation delay An to Qn Propagation delay E0 to Qn Propagation delay E1 to Qn Propagation delay P to Qn Output Enable time OE to Qn Output Disable time OE to Qn Waveform 1 Waveform 2 Waveform 2 Waveform 1 Waveform 3 Waveform 4 Waveform 3 Waveform 4 4.5 3.0 4.0 3.0 6.0 4.0 5.0 3.5 2.5 4.0 1.5 2.0 TYP 9.0 7.5 8.0 8.0 8.5 8.5 12.5 6.5 4.5 5.5 3.0 4.0 MAX 14.0 11.0 11.0 11.0 11.5 11.5 16.0 10.0 7.0 8.0 6.0 6.5 Tamb = 0C to +70C VCC = +5.0V 10% CL = 50pF, RL = 500 MIN 4.5 3.0 4.0 3.0 6.0 4.0 5.0 3.5 2.5 4.0 1.0 2.0 MAX 16.0 12.0 12.0 12.0 13.0 12.5 17.0 11.0 8.0 9.0 7.0 7.0 ns ns ns ns ns ns ns ns ns ns ns ns UNIT
AC WAVEFORMS
For all waveforms, VM = 1.5V.
An, P, E0, E1
VM tPLH
VM tPHL VM VM
E0, E1
VM tPHL
VM tPLH VM VM
Qn
Qn
SF01008
SF01009
Waveform 1. Propagation Delay for Non-Inverting Outputs
Waveform 2. Propagation Delay for Inverting Outputs
OE
VM tPZH
VM tPHZ VM 0V VOH -0.3V
OE
VM tPZL
VM tPLZ VM VOL +0.3V
Qn
Qn
SF01010
SF01011
Waveform 3. 3-State Output Enable Time to High Level and Output Disable Time from High Level
Waveform 4. 3-State Output Enable Time to Low Level and Output Disable Time from Low Level
1989 Jan 20
4
Philips Semiconductors
Product specification
1-of-10 decoder (3-State)
74F537
TEST CIRCUIT AND WAVEFORM
VCC 7.0V VIN PULSE GENERATOR RT D.U.T. VOUT RL NEGATIVE PULSE 90% VM 10% tTHL (tf ) CL RL tTLH (tr ) 90% POSITIVE PULSE 10% tTHL (tf ) AMP (V) 90% VM tw 10% 0V tw VM 10% tTLH (tr ) 0V AMP (V)
90%
Test Circuit for 3-State Outputs SWITCH POSITION TEST tPLZ tPZL All other SWITCH closed closed open
VM
Input Pulse Definition
DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RT = Termination resistance should be equal to ZOUT of pulse generators.
INPUT PULSE REQUIREMENTS family amplitude VM 74F 3.0V 1.5V rep. rate 1MHz tw 500ns tTLH 2.5ns tTHL 2.5ns
SF00777
1989 Jan 20
5

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