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| MITSUBISHI M54972P/FP Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER DESCRIPTION The M54972 is a semiconductor integrated circuit consisting of 8 stages of CMOS shift registers and latches with serial inputs and serial or parallel outputs. It is based on Bi-CMOS process technology, and has 8 bipolar drivers at the parallel outputs. PIN CONFIGURATION (TOP VIEW) Clock Serial input T 1 S-IN 2 3 4 16 O1 15 O2 14 O3 13 O4 12 O5 11 O6 10 O7 9 O8 Parallel outputs Logic GND L-GND M54972P/FP FEATURES q Serial input and serial or parallel output q Serial output enables cascade connection q Built-in latch for each stage q Enable input provides output control q Low supply current (standby current ICC 10A) q Serial I/O level is compatible with typical CMOS devices q Driver features: High withstand voltage (BVCEO 30V) Capable of large drive currents (IO(max)=300mA) Low output saturation voltage VOL < 0.6V at lo=300mA q Wide operating temperature range Ta=-20 - +75C Power supply VCC Serial output S-OUT 5 Latch input LATCH 6 Enable input EN 7 8 Driver GND P-GND Outline 16P4(P) 16P2N-A(FP) APPLICATION Dot drivers for thermal print heads. Serial/parallel conversion. Drivers for relays and solenoids. FUNCTION The M54972 consists of 8 stages of D-type flip flops connected to 8 latches. Data is input to serial input S-IN, and clock pulses are input to clock input T. When the clock changes from low to high, the input data enters the first shift register and data already in the shift registers is shifted sequentially. The serial output S-OUT is used to connect multiple M54972 to expand the number of parallel outputs. S-OUT is connected to S-IN of the next stage. For parallel output. When the clock pulse changes from low to high, latch input (LATCH) is high and output enable input (EN) is low the serial input data at S-IN appears at output O1 and the other data already present is shifted sequentially to outputs O2 through O8. The parallel outputs are inverted. When the latch input is held low, the latch retains the stored data. When the EN input is high, outputs O1 through O8 all turn off. As the internal logic is unstable when the power is turned on, the EN input should be kept high (setting outputs O1 through O8 off) until input data is set and the internal logic is initialized. L-GND is the GND of CMOS logic circuit and P-GND is the GND of output driver circuits O1 through O8 which employ bipolar transistors capable of large drive currents. Parallel outputs BLOCK DIAGRAM O1 16 O2 15 O3 14 O4 13 O5 12 O6 11 O7 10 O8 9 Power supply VCC 4 8 P-GND Driver GND Enable input EN 7 Q L D L Q D L Q D L Q D L Q D L Q D L Q D L Q D Latch input LATCH 6 Serial input S-IN 2 D T Q D T Q D T Q D T Q D T Q D T Q D T Q D T Q 5 S-OUT Serial output Clock T1 3 L-GND Logic GND MITSUBISHI M54972P/FP Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER TIMING CHART Serial input Clock S-IN T Latch input LATCH Enable input EN O1 O2 O3 O4 Parallel outputs O5 O6 O7 O8 Serial output S-OUT The shaded area shows the unstable state. INPUT/OUTPUT CIRCUIT DIAGRAM 1 Inputs with pullup resistors (EN, LATCH) 2 VCC Inputs with pulldown resistors (T, S-IN) VCC RIN RIN L-GND L-GND 3 Serial output (S-OUT) 4 VCC Parallel outputs (O1 - O8) VCC P-GND L-GND L-GND MITSUBISHI M54972P/FP Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER ABSOLUTE MAXIMUM RATINGS (Ta=-20 to 75C, unless otherwise noted) Symbol VCC VI VO IO Pd Topr Tstg Supply voltage Input voltage Output voltage Output current Power dissipation Operating temperature Storage temperature S-OUT O1 - O8 : OFF O1 - O8 : ON Ta=25C M54972P M54972FP Parameter Conditions Ratings -0.5 - +8 -0.5 - VCC+0.5 -0.5 - VCC+0.5 -0.5 - +30 300 1.25 0.8 -20 - 75 -55 - 125 Unit V V V mA W C C RECOMMENDED OPERATING CONDITION Symbol VCC VO IO Parameter Supply voltage Applied output voltage Output current (per circuit) Conditions Min. 4 Limits Typ. 5 Max. 6 30 300 200 200 Unit V V mA O1 - O8 : OFF O1 - O8 : ON, Duty cycle < 35% O1 - O8 : ON, Duty cycle < 70% O1 - O8 : ON, Duty cycle < 15% M54972P M54972FP ELECTRICAL CHARACTERISTICS (Ta=25C, VCC=5V, unless otherwise noted) Symbol VIH VIL IIH IIL RIN VOH VOL IOH IOL VOL1 VOL2 VOL3 IOLK ICC1 ICC2 Parameter High-level input voltage Low-level input voltage High-level input current Low-level input current Input resistance High-level output voltage Low-level output voltage High-level output current Low-level output current Low-level output voltage Output leak current Supply current Test conditions Ta=-20 - 75C, VCC=4 - 6V T, S-IN EN, LATCH S-OUT S-OUT S-OUT S-OUT O1 - O8 O1 - O8 VIH=5V VIL=0V 50 4.9 0.1 -100 400 0.5 0.6 50 10 7.5 Min. 0.7VCC 0 Limits Typ. Max. VCC 0.3VCC 100 -100 Unit V V A A k V V A A V V A A mA |IO|1A VOH=4.5V VOL=0.4V IOL=200mA IOL=300mA VO=30V (O1 - O8: OFF) Input: open, All driver outputs: OFF One driver output is ON. TIMING REQUIREMENTS (Ta=-20 to 75C, unless otherwise noted) Symbol f(T) tw(T) tw(L) tsu th td(T-L) tr(T) tf(T) Parameter Clock frequency Clock pulse width Latch pulse width Data setup time Data hold time Clock-latch time Clock pulse rise time Clock pulse fall time Test conditions Input duty cycle: 40 - 60% 200 200 100 100 400 500 500 Min. Limits Typ. Max. 2 Unit MHz ns ns ns ns ns ns ns MITSUBISHI M54972P/FP Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER TIMING CHART Serial data input S-IN 2.5V 2.5V tsu th 90% Clock T 2.5V tw(T) td(T-L) 2.5V 10% tr(T) 90% 10% tf(T) Latch input LATCH 2.5V tw(L) 2.5V SWITCHING CHARACTERISTICS (Ta=25C, VCC=5V, unless otherwise noted) Symbol tPLH tPHL tPLH tPHL tPLH tPHL Parameter Low-to-high-level output propagation time From input T to output S-OUT High-to-low-level output propagation time From input T to output S-OUT Low-to-high-level output propagation time From input T to output ON High-to-low-level output propagation time From input T to output ON Low-to-high-level output propagation time From input EN to output ON High-to-low-level output propagation time From input EN to output ON Input VCC The input waveform: tr 20ns, tf 20ns RL PG 50 Test conditions Min. Limits Typ. Max. 0.3 0.3 10 5 10 5 Unit s s s s s s VIH=5V VIL=0V RL(S-OUT)= RL(ON)=100 (N=1-8) CL=15pF TEST CIRCUIT M54972P/FP CL Output The capacitance CL includes the stray wiring capacitance and probe input capacitance. TIMING CHART Clock T 2.5V tPLH Serial output S-OUT 2.5V 2.5V 2.5V tPHL Enable input EN tPLH 2.5V tPHL 2.5V 2.5V tPLH 2.5V 2.5V tPHL 2.5V Output ON MITSUBISHI M54972P/FP Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER TYPICAL CHARACTERISTICS (VCC=5V, Ta=25C, unless otherwise noted) Thermal derating (Absolute maximum rating) 1.5 100 M54972P VCC vs. ICC Power dissipation Pd (W) Supply current ICC (mA) 8 Outputs ON 80 7 Outputs ON 6 Outputs ON 60 5 Outputs ON 4 Outputs ON 40 3 Outputs ON 2 Outputs ON 1 Output ON 1.0 M54972FP 0.5 20 0 0 25 50 75 100 0 3 4 5 6 7 8 Ambient temperature Ta (C) Supplyvoltage VCC (V) Duty cycle vs. allowable output current (M54972P) 400 Duty cycle vs. allowable output current (M54972P) 400 Output current Io (mA) 300 1 7 8 - 6 300 1 4 5 - 3 200 Ta = 25C, VCC = 6V Repetitive frequency >10HZ Each figure in a circle shows the number of output circuits which operate simultaneously. Current value : output current per circuit 0 20 40 60 80 100 Output current Io (mA) 200 Ta = 75C, VCC = 6V Repetitive frequency >10HZ Each figure in a circle shows the number of output circuits which operate simultaneously. Current value : output current per circuit 0 20 40 60 80 6 7 8 100 100 0 0 100 Duty cycle (%) Duty cycle (%) Duty cycle vs. allowable output current (M54972FP) 300 1 4 Duty cycle vs. allowable output current (M54972FP) - 3 300 1 2 Output current Io (mA) Output current Io (mA) 5 3 200 6 200 4 8 100 0 0 Ta = 25C, VCC = 6V Repetitive frequency >10HZ Each figure in a circle shows the number of output circuits which operate simultaneously. Current value : output current per circuit 20 40 60 80 100 100 Ta = 75C, VCC = 6V Repetitive frequency >10HZ Each figure in a circle shows the number of output circuits which operate simultaneously. Current value : output current per circuit 0 20 40 60 80 6 8 0 100 Duty cycle (%) Duty cycle (%) MITSUBISHI M54972P/FP Bi-CMOS 8-BIT SERIAL-INPUT LATCHED DRIVER Driver output VOL vs. IOL (common) 600 Low-level output current IOL (mA) Ta = -20C Ta = 25C Ta = 75C 400 200 0 0 0.5 1.0 Low-level output voltage VOL (V) |
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