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74HC(T)193: Presettable synchronous 4-bit binary up, down counter

The 74HC193; 74HCT193 is a 4-bit synchronous binary up/down counter. Separate up/down clocks, CPU and CPD respectively, simplify operation. The outputs change state synchronously with the LOW-to-HIGH transition of either clock input. If the CPU clock is pulsed while CPD is held HIGH, the device will count up. If the CPD clock is pulsed while CPU is held HIGH, the device will count down. Only one clock input can be held HIGH at any time to guarantee predictable behavior. The device can be cleared at any time by the asynchronous master reset input (MR); it may also be loaded in parallel by activating the asynchronous parallel load input (PL). The terminal count up (TCU) and terminal count down (TCD) outputs are normally HIGH. When the circuit has reached the maximum count state of 15, the next HIGH-to-LOW transition of CPU will cause TCU to go LOW. TCU will stay LOW until CPU goes HIGH again, duplicating the count up clock. Likewise, the TCD output will go LOW when the circuit is in the zero state and the CPD goes LOW. The terminal count outputs can be used as the clock input signals to the next higher order circuit in a multistage counter, since they duplicate the clock waveforms. Multistage counters will not be fully synchronous, since there is a slight delay time difference added for each stage that is added. The counter may be preset by the asynchronous parallel load capability of the circuit. Information present on the parallel data inputs (D0 to D3) is loaded into the counter and appears on the outputs (Q0 to Q3) regardless of the conditions of the clock inputs when the parallel load (PL) input is LOW. A HIGH level on the master reset (MR) input will disable the parallel load gates, override both clock inputs and set all outputs (Q0 to Q3) LOW. If one of the clock inputs is LOW during and after a reset or load operation, the next LOW-to-HIGH transition of that clock will be interpreted as a legitimate signal and will be counted. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

74HC_T_193: Product Block Diagram

74HC_T_193: Block Diagram

74HC_T_193: Block Diagram

Outline 3d SOT338-1

Data Sheets (1)

Application Notes (2)

Users Guides (1)

Selector Guides (2)

Package Information (3)

Packing (1)

Supporting Information (4)

Ordering Information

Package Information

Product ID	Package Description	Outline Version	Reflow/Wave Soldering	Packing	Product Status	Part NumberOrdering code(12NC)	Marking	Chemical Content	RoHS / Pb Free / RHF	LeadFree Conversion Date	EFR	IFR(FIT)	MTBF(hour)	MSL	MSL LF
74HCT193DB		SOT338-1	SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	74HCT193DB,118 (9351 897 30118)	HCT193	74HCT193DB		week 12, 2005	84.9	6.62	1.51E8	1	1
				Bulk Pack	Active	74HCT193DB,112 (9351 897 30112)	HCT193	74HCT193DB		week 12, 2005	84.9	6.62	1.51E8	1	1
74HCT193D		SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1 CECC	Active	74HCT193D,653 (9337 151 00653)	74HCT193D	74HCT193D		week 6, 2004	84.9	6.62	1.51E8	1	1
				Bulk Pack, CECC	Active	74HCT193D,652 (9337 151 00652)	74HCT193D	74HCT193D		week 6, 2004	84.9	6.62	1.51E8	1	1
74HCT193PW		SOT403-1	SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	74HCT193PW,118 (9352 830 88118)	HCT193	74HCT193PW		Always Pb-free	84.9	6.62	1.51E8	1	1
				Bulk Pack	Active	74HCT193PW,112 (9352 830 88112)	HCT193	74HCT193PW		Always Pb-free	84.9	6.62	1.51E8	1	1
74HC193D		SOT109-1	SO-SOJ-REFLOW SO-SOJ-WAVE SO-SOJ-REFLOW SO-SOJ-WAVE	Reel 13" Q1/T1 CECC	Active	74HC193D,653 (9337 146 20653)	74HC193D	74HC193D		week 30, 2004	84.9	6.62	1.51E8	1	1
				Bulk Pack, CECC	Active	74HC193D,652 (9337 146 20652)	74HC193D	74HC193D		week 30, 2004	84.9	6.62	1.51E8	1	1
74HC193PW		SOT403-1	SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	74HC193PW,118 (9351 889 80118)	HC193	74HC193PW		week 10, 2005	84.9	6.62	1.51E8	1	1
				Bulk Pack	Active	74HC193PW,112 (9351 889 80112)	HC193	74HC193PW		week 10, 2005	84.9	6.62	1.51E8	1	1
74HC193DB		SOT338-1	SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE SSOP-TSSOP-VSO-REFLOW SSOP-TSSOP-VSO-WAVE	Reel 13" Q1/T1	Active	74HC193DB,118 (9351 886 10118)	HC193	74HC193DB		week 13, 2005	84.9	6.62	1.51E8	1	1
				Bulk Pack	Active	74HC193DB,112 (9351 886 10112)	HC193	74HC193DB		week 13, 2005	84.9	6.62	1.51E8	1	1