Document
TC74AC393P/F/FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74AC393P, TC74AC393F, TC74AC393FT
Dual Binary Counter
The TC74AC393 is an advanced high speed CMOS 4-BIT BINARY COUNTER fabricated with silicon gate and double-layer metal wiring C2MOS technology.
It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.
It contains two independent counter circuits in one package, so that counting or frequency division of eight binary bits can be achieved with one IC.
This device changes state on the negative going transition of the CLOCK pulse. The counter can be reset to “0” (QA to QD = “L”) by a high at the CLEAR input regardless of other inputs.
All inputs are equipped with protection circuits against static discharge or transient excess voltage.
Features
• High speed: fmax = 180 MHz (typ.) at VCC = 5 V • Low power dissipation: ICC = 8 μA (max) at Ta = 25°C • High noise immunity: VNIH = VNIL = 28% VCC (min) • Symmetrical output impedance: |IOH| = IOL = 24 mA (min)
Capability of driving 50 Ω transmission lines. • Balanced propagation delays: tpLH ∼− tpHL • Wide operating voltage range: VCC (opr) = 2 to 5.5 V • Pin and function compatible with 74F393
TC74AC393P
TC74AC393F
TC74AC393FT
Weight DIP14-P-300-2.54 SOP14-P-300-1.27A TSSOP14-P-0044-0.65A
: 0.96 g (typ.) : 0.18 g (typ.) : 0.06 g (typ.)
Start of commercial production
1988-10
1
2014-03-01
Pin Assignment
1CK 1 1CLR 2
1QA 3 1QB 4 1QC 5 1QD 6 GND 7
(top view)
14 VCC 13 2CK 12 2CLR 11 2QA 10 2QB 9 2QC 8 2QD
Truth Table
Inputs
Outputs
CK CLR QA QB QC QD
X
H
L
L
L
L
L
Count Up
L
No Change
X: Don’t care
Timing Chart
CK
CLR
QA
QB
QC
QD
TC74AC393P/F/FT
IEC Logic Symbol
1CLR (2) 1CK (1) 2CLR (12)
CTRDIV 16 0 CT = 0
CT +
3
2CK (13)
(3) 1QA (4) 1QB (5) 1QC (6) 1QD (11) 2QA (10) 2QB (9) 2QC (8) 2QD
2
2014-03-01
System Diagram
TC74AC393P/F/FT
1/13 CK
2/12 CLR
D
CK Q R
D
CK Q R
D
CK Q R
D
CK Q R
3/11 QA
4/10 QB
5/9 QC
6/8 QD
Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature
VCC VIN VOUT IIK IOK IOUT ICC PD Tstg
−0.5 to 7.0
V
−0.5 to VCC + 0.5
V
−0.5 to VCC + 0.5
V
±20
mA
±50
mA
±50
mA
±200
mA
500 (DIP) (Note 2)/180 (SOP/TSSOP)
mW
−65 to 150
°C
Note 1:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook (“Handling Precautions”/Derating Concept and Methods) and individual reliability data (i.e. reliability test report and estimated failure rate, etc).
Note 2: 500 mW in the range of Ta = −40 to 65°C. From Ta = 65 to 85°C, a derating factor of −10 mW/°C should be applied up to 300 mW.
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage Input voltage Output voltage Operating temperature
Input rise and fall time
VCC VIN VOUT Topr
dt/dV
2.0 to 5.5 0 to VCC 0 to VCC −40 to 85 0 to 100 (VCC = 3.3 ± 0.3 V) 0 to 20 (VCC = 5 ± 0.5 V)
V V V °C
ns/V
Note: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND.
3
2014-03-01
TC74AC393P/F/FT
Electrical Characteristics
DC Characteristics
Characteristics
Symbol
High-level input voltage
VIH
Test Condition ―
Ta =
Ta = 25°C
−40 to 85°C
Unit
VCC (V)
Min
Typ.
Max
Min
Max
2.0 1.50 ―
― 1.50 ―
3.0 2.10 ―
― 2.10 ―
V
5.5 3.85 ―
― 3.85 ―
Low-level input voltage
VIL
2.0 ―
― 0.50 ― 0.50
―
3.0 ―
―
0.90
―
0.90
V
5.5 ―
― 1.65 ― 1.65
2.0 1.9 2.0
―
1.9
―
High-level output voltage
VOH
IOH = −50 μA
VIN
= VIH or
VIL
IOH = −4 mA
IOH = −24 mA
3.0 2.9 3.0
―
2.9
―
4.5 4.4 4.5
―
4.4
―
V
3.0 2.58 ―
― 2.48 ―
4.5 3.94 ―
― 3.80 ―
IOH = −75 mA (Note) 5.5 ―
―
― 3.85 ―
2.0 ―
0.0 0.1
―
0.1
Low-level output voltage
Input leakage current
IOL = 50 μA
3.0 ―
0.0 0.1
―
0.1
VIN
VOL
= VIH or
VIL
IOL = 12 mA
4.5 ―
0.0 0.1
―
0.1
V
3.0 ―
― 0.36 ― 0.44
IOL = 24 mA
4.5 ―
― 0.36 ― 0.44
IOL = 75 mA (Note) 5.5 ―
―
―
― 1.65
IIN
VIN = VCC or GND
5.5 ―
― ±0.1 ― ±1.0 μA
Quiescent supply current
ICC
VIN = VCC or GND
.