74HC193D View Datasheet(PDF) - Philips Electronics

Part Name

Description

MFG CO.

74HC193D

Presettable synchronous 4-bit binary up/down counter

Philips Electronics 

Philips Semiconductors

Presettable synchronous 4-bit binary

up/down counter

Product specification

74HC/HCT193

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3V; VI = GND to 3 V.

Fig.10 Waveforms showing the master reset input (MR) pulse width, MR to Qn propagation delays, MR to CPU,

CPD removal time and output transition times.

The shaded areas indicate when the input is permitted to

change for predictable output performance.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3V; VI = GND to 3 V.

Fig.11 Waveforms showing the data input (Dn) to parallel load input (PL) set-up and hold times.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3V; VI = GND to 3 V.

Fig.12 Waveforms showing the data input (Dn), parallel load input (PL) and the master reset input (MR) to the

terminal count outputs (TCU, TCD) propagation delays.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3V; VI = GND to 3 V.

Fig.13 Waveforms showing the CPU to CPD or CPD to CPU hold times.

December 1990

12

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