Document
74HC393; 74HCT393
Dual 4-bit binary ripple counter
Rev. 8 — 22 October 2021
Product data sheet
1. General description
The 74HC393; 74HCT393 is a dual 4-stage binary ripple counter. Each counter features a clock input (nCP), an overriding asynchronous master reset input (nMR) and 4 buffered parallel outputs (nQ0 to nQ3). The counter advances on the HIGH-to-LOW transition of nCP. A HIGH on nMR clears the counter stages and forces the outputs LOW, independent of the state of nCP. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
2. Features and benefits
• Wide supply voltage range from 2.0 V to 6.0 V • CMOS low power dissipation • High noise immunity • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B • Complies with JEDEC standards:
• JESD8C (2.7 V to 3.6 V) • JESD7A (2.0 V to 6.0 V) • Input levels: • For 74HC393: CMOS level • For 74HCT393: TTL level • ESD protection: • HBM JESD22-A114F exceeds 2000 V • MM JESD22-A115-A exceeds 200 V. • Two 4-bit binary counters with individual clocks • Divide by any binary module up to 28 in one package • Two master resets to clear each 4-bit counter individually
3. Ordering information
Table 1. Ordering information Type number Package
Temperature range Name
Description
74HC393D 74HCT393D
-40 °C to +125 °C SO14
plastic small outline package; 14 leads; body width 3.9 mm
74HC393PW 74HCT393PW
-40 °C to +125 °C
TSSOP14 plastic thin shrink small outline package; 14 leads; body width 4.4 mm
74HC393BQ 74HCT393BQ
-40 °C to +125 °C
DHVQFN14 plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 14 terminals; body 2.5 × 3 × 0.85 mm
Version SOT108-1
SOT402-1
SOT762-1
Nexperia
4. Functional diagram
1Q0 3 1 1CP
1Q1 4 1
1Q2 5 2 1MR
1Q3 6
2Q0 11 13 2CP
2Q1 10 2
2Q2 9 12 2MR
2Q3 8 001aad532
Fig. 1. Logic symbol
74HC393; 74HCT393
Dual 4-bit binary ripple counter
CTR4 0 3
2 CT = 0
4
CT
1+
5
36
CTR4 0 11
12 CT = 0
10
CT
13 +
9
38
001aad533
Fig. 2. IEC logic symbol
1Q0
1CP
3
1
4-BIT
1Q1
BINARY
4
RIPPLE 1Q2
2
1MR COUNTER 1Q3
5
6
2Q0
2CP
11
13
4-BIT
2Q1
BINARY
10
RIPPLE 2Q2
12
2MR COUNTER 2Q3
9
8
Fig. 3. Functional diagram
001aad534
0
1
2
3
4
15
5
14
6
13
7
12 11 10
Fig. 4. State diagram
9
8
001aad535
Q
Q
Q
Q
FF
FF
FF
FF
CP
T1
T2
T3
T4
RD
RD
RD
RD
MR
Q0
Q1
Q2
Q3
001aad536
Fig. 5. Logic diagram (one counter)
74HC_HCT393
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 22 October 2021
© Nexperia B.V. 2021. All rights reserved
2 / 15
Nexperia
5. Pinning information
74HC393; 74HCT393
Dual 4-bit binary ripple counter
5.1. Pinning
74HC393 74HCT393
1CP 1 1MR 2 1Q0 3 1Q1 4 1Q2 5 1Q3 6 GND 7
14 VCC 13 2CP 12 2MR 11 2Q0 10 2Q1 9 2Q2 8 2Q3
aaa-007518
Fig. 6. Pin configuration SOT108-1 (SO14)
74HC393 74HCT393
1CP 1 1MR 2 1Q0 3 1Q1 4 1Q2 5 1Q3 6 GND 7
14 VC.