MC74F574 OCTAL D-TYPE FLIP-FLOP WITH 3-STATE OUTPUTS The MC74F574 is a high-speed, low-power octal D-type flip-flop featuring separate D-type inputs for each flip-flop and 3-state outputs for bus oriented applications. A buffered clock (CP) and Output Enable (OE) are common to all flip-flops. This device is functionally identical to the F374 except for the pinouts. • Broadside Pinout Version of F374 • Edge-Triggered D-Type Inputs • Buffered Positive Edge-Triggered Clock • 3-State Outputs for Bus Oriented Applications • ESD Protection > 4000 Volts PIN ASSIGNMENT VCC O0 20 19 OCTAL D-TYPE FLIP-FLOP WITH 3-STATE OUTPUTS FAST SCHOTTKY TTL J SUFFIX CERAMIC CASE 732-03 20 O1 O2 O3 O4 O5 O6 O7 CP 18 17 16 15 14 13 12 11 1 N SUFFIX PLASTIC CASE 738-03 20 1 1 OE 2 D0 3 D1 4 D2 5 D3 6 D4 7 D5 8 D6 9 D7 10 GND DW SUFFIX SOIC CASE 751D-03 20 1 LOGIC SYMBOL 2 3 4 5 6 7 8 9 ORDERING INFORMATION 11 CP 1 OE D0 D1 D2 D3 D4 D5 D6 D7 O0 O1 O2 O3 O4 O5 O6 O7 19 18 17 16 15 14 13 12 MC74FXXXJ Ceramic MC74FXXXN Plastic MC74FXXXDW SOIC GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC DC Supply Voltage 74 4.5 5.0 5.5 V TA Operating Ambient Temperature Range 74 0 25 70 °C IOH Output Current — High 74 — — 3.0 mA IOL Output Current — Low 74 — — 24 mA FAST AND LS TTL DATA 4-226 MC74F574 FUNCTION TABLE Inputs Internal Register Outputs Operating Mode OE CP Dn Q0–Q7 L L ↑ ↑ l h L H L H L ↑ X NC NC H H ↑ X Dn X Dn X Z Z Load and read register Hold Disable outputs H = HIGH voltage level h = HIGH voltage level one set-up time prior to the Low-to-High clock transition L = LOW voltage level l = LOW voltage level one set-up time prior to the Low-to-High clock transition NC = No change X = Don’t care Z = High impedance “off” state ↑ = Low-to-High clock transition ↑ = Not a Low-to-High clock transition FUNCTIONAL DESCRIPTION The MC74F574 consists of eight edge-triggered flip-flops with individual D-type inputs and 3-state true outputs. The buffered clock and buffered Output Enable are common to all flip-flops. The eight flip-flops will store the state of their individual D inputs that meet the setup and hold times requirements on the LOW-to-HIGH Clock (CP) transition. With the Output Enable (OE) LOW, the contents of the eight flip-flops are available at the outputs. When the OE is HIGH, the outputs go to the high impedance state. Operation of the OE input does not affect the state of the flip-flops. DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min Typ Max Unit Test Conditions (Note 1) VIH Input HIGH Voltage 2.0 — — V Guaranteed Input HIGH Voltage VIL Input LOW Voltage — — 0.8 V Guaranteed Input LOW Voltage VIK Input Clamp Diode Voltage — — – 1.2 V VCC = MIN, IIN = – 18 mA 2.4 — — V VOH Output HIGH Voltage 2.7 — — V VOL Output LOW Voltage — — 0.5 V — — 20 IIH Input HIGH Current — — 100 IIL Input LOW Current — — – 0.6 mA VCC = MAX, VIN = 0.5 V IOZH Output Off Current — HIGH — — 50 µA VCC = MAX, VOUT = 2.7 V IOZL Output Off Current — LOW — — –50 µA VCC = MAX, VOUT = 0.5 V IOS Output Short Circuit Current (Note 2) – 60 — –150 mA VCC = MAX, VOUT = 0 V ICCZ Power Supply Current (All Outputs OFF) — 55 86 mA VCC = MAX µA IOH = – 3.0 mA IOL = 24 mA VCC = MIN VCC = 4.75 V VCC = MIN VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V Dn – GND; OE = 4.5 V NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type. 2. Not more than one output should be shorted at a time, nor for more than 1 second. FAST AND LS TTL DATA 4-227 MC74F574 LOGIC DIAGRAM D0 D1 D2 D3 D4 D5 D6 D7 CP CP D CP D CP D CP D CP D CP D CP D CP D Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q OE O0 O1 O2 O3 O4 O5 O6 O7 AC ELECTRICAL CHARACTERISTICS Symbol Parameter 54 / 74F 74F TA = + 25°C VCC = + 5.0 V CL = 50 pF TA = 0°C to + 70°C VCC = +5.0 V ± 10% CL = 50 pF Min Typ Max Min Max Unit fMAX Maximum Clock Frequency 100 — — 70 — MHz tPLH tPHL Propagation Delay CP to On 2.5 2.5 — — 8.5 8.5 2.5 2.5 8.5 8.5 ns tPZH tPZL Output Enable Time 3.0 3.0 — — 9.0 9.0 2.5 2.5 10.0 10.0 ns tPHZ tPLZ Output Disable Time 1.5 1.0 — — 5.5 5.5 1.5 1.0 6.5 6.5 ns AC OPERATING CHARACTERISTICS Symbol Parameter 54 / 74F 74F TA = + 25°C VCC = + 5.0 V CL = 50 pF TA = 0°C to + 70°C VCC = +5.0 V ± 10% CL = 50 pF Min Typ Max Min Typ Max Unit ts(H) ts(L) Setup Time, HIGH or LOW Dn to CP 2.5 2.0 — — — — 2.5 3.0 — — — — ns th(H) th(L) Hold Time, HIGH to LOW Dn to CP 2.0 2.0 — — — — 2.0 2.0 — — — — ns tw(H) tw(L) CP Pulse Width HIGH or LOW 5.0 5.0 — — — — 5.0 5.0 — — — — ns FAST AND LS TTL DATA 4-228